Read how ICorr’s Scholarship Programme is helping shape the next generation of corrosion professionals

Read how ICorr’s Scholarship Programme is helping shape the next generation of corrosion professionals

Discover how ICorr’s bursary partnership with the University of Manchester is making a positive impact on students’ higher education journeys, providing financial support, encouraging academic excellence, and offering a valuable stepping stone towards a rewarding career in corrosion engineering.

Read Jana Al Shami’s story to learn how the bursary is supporting aspiring corrosion professionals and helping to build the future of the industry.

 How the ICorr Scholarship Programme Supported My Higher Education Journey

 As a Materials Science and Engineering student with a strong interest in sustainability, I have always been motivated by the challenge of developing solutions that will help reduce environmental impact. Throughout my studies, I have become increasingly interested in the role that materials performance and corrosion management play in creating safer, more sustainable  nfrastructure and energy systems.

 My involvement with the Institute of Corrosion (ICorr) has been an important part of that journey. Through ICorr, I have gained a greater understanding of the real-world effect of corrosion across a wide range of industries and have had the opportunity to engage with professionals who are helping to address some of the sector’s most important challenges. Learning from experts in the field has inspired my interest in corrosion and safety engineering, which has given me valuable insight into potential career pathways.

Receiving an ICorr Scholarship has been both an honour and a significant source of support. Like many students, I balance my studies with part-time work to help cover living expenses. The financial support provided by the scholarship has reduced that pressure considerably, allowing me to dedicate more time and energy to my academic work and professional development.

In addition to the financial benefits, the scholarship has given me confidence in my abilities and pushed me to achieve my aspirations. Being recognised by a respected professional body such as ICorr has reinforced my commitment to pursuing a career within the corrosion sector. Also, it has motivated me to continue reaching for high academic performance and to take full advantage of opportunities to develop my knowledge and industry connections.

 Looking ahead, I hope to build a career in corrosion and safety engineering, with a focus on environmentally sustainable projects and clean energy technologies. Corrosion prevention and materials integrity are essential to the safe and efficient operation of many low-carbon energy systems, and I am excited by the prospect of contributing to solutions that will help create a more sustainable future.

 I am incredibly grateful to ICorr for investing in students through its Scholarship Programme. The support I have received has had a meaningful impact on my higher education journey, helping me focus on my studies while building a strong foundation for my future career.

I would encourage other students with an interest in engineering, materials, or corrosion to explore the opportunities that ICorr offers. The experience along with the professional connections can make a real difference, both during your studies and beyond.

 Jana Al Shami – ICorr Scholarship Recipient

If you’re considering studying corrosion at the University of Manchester, you may be eligible to apply for an ICorr–University of Manchester bursary. Prospective students are invited to complete the application questionnaire as part of the scholarship process.

ICorr Midlands Branch Chair Introduction

ICorr Midlands Branch Chair Introduction

 Ali Oskuie, Asset Integrity Engineer, PhD, MSc

Congratulations to our new Midlands Branch Chair Dr. Ali Oskuie on stepping into this leadership role with a clear vision for the future of our corrosion community. In this article, we take a closer look at Ali’s journey with ICorr and his vision for the Midlands Branch.

  1. About yourself, your ICorr involvement, and your journey

My name is Ali Oskuie, and I am a corrosion engineering professional currently working at Worley UK. I specialise in risk-based inspection (RBI) and asset integrity management (AIM), and have been involved in managing several large-scale projects in these areas.

I hold a PhD in corrosion engineering and have over 13 years of experience in the field. I began my career in Iran, where I completed my doctoral studies and spent seven years working in industry before relocating to the UK in 2022 to join Cranfield University as a Knowledge Transfer Associate.

Although I was aware of ICorr prior to moving to the UK, my relocation provided the opportunity to engage more closely with the institute. I became a member and, through my professional network, connected with Dr Prafull Sharma, who was the Midlands Branch Chair at the time.

During this period, I was nominated as Branch Secretary. This role gave me valuable first-hand experience of ICorr activities and the branch’s role in promoting and disseminating corrosion knowledge.

Following Dr Sharma’s departure earlier this year, I was honoured that the committee approved my nomination to take on the role of Midlands Branch Chair.

  1. What are your priorities as you begin your tenure?

My primary priority is to strengthen collaboration across industry, academia, and students within the Midlands region. I aim to build a strong network and database of professionals and organisations to help bridge these communities more effectively.

A key focus will be increasing industry engagement. Industrial partners play an important role in expanding corrosion knowledge through sponsorship and collaboration, while also benefiting from visibility and access to emerging talent.

Another priority is the organisation of regular technical webinars on topical issues. Hosting monthly sessions will provide continuous learning opportunities, attract a wider audience, and support growth in both membership and engagement.

In addition, I intend to strengthen links with universities in the region by engaging lecturers and researchers and encouraging their participation in our events.

  1. What expansion opportunities do you see for the branch over the next year?

Over the next year, I see strong opportunities to expand both our industry partnerships and our digital presence.

Increasing the number of industry sponsors will be an important objective.

At the same time, we will focus on strengthening our visibility through social media and digital platforms to reach a wider audience, particularly students and early-career engineers.

  1. What do you see as the major branch events of the 2026–2027 session?

One of our key ambitions for 2027 is to organise a one- to two-day conference in collaboration with a university or industry partner.

Alongside this, we plan to continue our programme of monthly webinars covering topical technical subjects such as pipeline corrosion, hydrogen-related corrosion challenges, renewable energy, and professional development topics such as project management.

  1. Is there anything else you’d like to share with our members?

I strongly believe that our members are at the heart of everything we do—they are not just members, but colleagues and a professional community.

I encourage all members to engage with the branch by sharing ideas and feedback through our communication channels. We are committed to listening and continuously improving our services.

Please contact me at: midlandschair@icorr.org

 

ICorr President Visits the University of Manchester to Inspire the Next Generation of Corrosion Professionals

ICorr President Visits the University of Manchester to Inspire the Next Generation of Corrosion Professionals

ICorr President Visits the University of Manchester to Inspire the Next Generation of Corrosion Professionals

Dr Yunnan Gao, President of the Institute of Corrosion (ICorr), visited the University of Manchester on 26 June 2026 to engage with engineering students and introduce the opportunities available through ICorr membership, professional development, and involvement in the global corrosion community.

Following the successful collaboration between ICorr and the University of Manchester, Dr Gao was invited to deliver a presentation entitled:

“Meet the ICorr President – How the Institute of Corrosion Can Help UoM Students Develop Their Careers”

The event was hosted at the Engineering Building, University of Manchester, and was attended by students with an interest in corrosion, materials engineering, and related disciplines. The session provided an opportunity for students to learn more about the role of ICorr, its activities, and how involvement with the professional body can support their academic journey and future careers.

The visit followed Dr Gao’s earlier engagement with the University of Manchester, where he met with ICorr Scholarship recipient students and discussed the importance of supporting young engineers entering the corrosion profession. The combined activities reflect ICorr’s ongoing commitment to encouraging student participation, developing future corrosion specialists, and strengthening links between academia and industry.

During the presentation, Dr Gao introduced ICorr’s mission and role in advancing corrosion prevention, management, and engineering excellence. Key topics covered included:

  • The role of ICorr in supporting the corrosion profession in the UK and internationally
  • The benefits and opportunities available through free ICorr student membership
  • Career development pathways, Continuing Professional Development (CPD), and routes towards professional registration
  • Young engineer initiatives, mentoring opportunities, and professional networking
  • ICorr’s engagement with international corrosion organisations and global activities, including collaboration with partners in China
  • The importance of building professional networks and engaging with the wider corrosion community at an early stage of career development

The presentation was followed by an interactive discussion with students, allowing attendees to explore career opportunities in corrosion engineering, current industry trends, and the skills required to develop successful careers in this important field.

Dr Gao said:

“It was a great pleasure to return to the University of Manchester and meet with students who are interested in corrosion and materials engineering. Developing the next generation of corrosion professionals is a key priority for ICorr. Through student membership, professional networking, mentoring, and engagement with the wider corrosion community, we hope to provide students with the support and opportunities they need to build successful careers.”

The session received very positive feedback, with strong student engagement and interest in becoming involved with ICorr. Students were encouraged to take advantage of ICorr’s free student membership scheme, which provides access to professional networks, technical knowledge, events, and opportunities to connect with corrosion professionals across industry and academia.

The University of Manchester has a long-standing reputation for excellence in engineering, materials science, and corrosion research. Through continued collaboration with universities such as Manchester, ICorr aims to strengthen the connection between education, research, and industrial practice, ensuring that future engineers are equipped with the knowledge and professional networks needed to address corrosion challenges worldwide.

ICorr would like to thank Dr Beatriz Mingo, Professor Dirk Engelberg, and colleagues at the University of Manchester for their support in organising the event and for their continued engagement in promoting corrosion awareness and professional development among students.

Photo: Dr Yunnan Gao, President of the Institute of Corrosion (ICorr), with University of Manchester students following his presentation “Meet the ICorr President – How the Institute of Corrosion Can Help UoM Students Develop Their Careers” on 26 June 2026.

CP in Concrete – An Explanation of the Exponential Ageing Model

CP in Concrete – An Explanation of the Exponential Ageing Model

George Sergi, FICorr, Technical Director at Vector Corrosion Technologies Ltd

Meet The Author

George Sergi is the technical director at Vector Corrosion Technologies Ltd. He has long been involved in research and development for concrete durability consulting and problem-solving in the construction and concrete repair industry and is skilled in materials science, highways, bridge inspection, and steel-reinforced concrete repair and protection. George holds a PhD from Aston University for his work on the corrosion of steel in concrete. He was previously the head of corrosion at the Building Research Establishment (BRE), technical manager at FOSROC Constructive Solutions and lead bridge consultant for Birmingham City Laboratories.

The following summary is intended to provide specific clarification on the use of the Exponential Ageing Model for CP in Concrete, as referred to by C M Stone and G K Glass in their article “A critical assessment of the half-life Ageing term and failure to predict future galvanic anode behaviour”, Corrosion Management, Issue 187 [1].

Regarding long-term monitoring data from a hybrid anode installation at Whiteadder Bridge [1] they argued that:

  1. The observed current decay did not follow an exponential relationship over the full-service life.
  2. A constant residual current dominated long-term
  3. Early high current output was governed by curing or resistivity changes in the activator rather than anode ageing.
  4. Changes in steel passivity, rather than anode condition, governed long-term current trends [3].

These interpretations are examined below in the context of electrochemical fundamentals, field data from multiple installations, and laboratory evidence.

An Explanation of the Pre-Passivation Regime Within the Ageing Factor (AF) Model

The (AF) model does not assume indefinite exponential decay. It describes the pre-passivation regime, during which:

  • Corrosion products are at least partially transported away from the zinc/activator
  • The anode remains electrochemically
  • The zinc surface area decreases progressively due to
  • Both geometric modelling and long-term field data consistently show that, during this regime, current output halves at approximately constant time intervals. This behaviour has been observed across multiple installations and for:
    • Different anode geometries
    • Varying exposure conditions

For the Whiteadder Bridge data [1], the first 8–9 years of operation exhibited a clear exponential decline, yielding an AF of approximately 3 years, which confirms the existence of an exponential ageing regime.

Transition to Passivation Stage

The deviation from exponential decay at later ages, resulting in an asymptotic or quasi-constant current, is not evidence against the AF concept and instead reflects a transition to a passivation-controlled regime, in which:

  • A continuous corrosion product layer forms at the zinc/activator
  • The zinc surface becomes effectively
  • Current output is limited to a low level governed by oxide

This behaviour is well known in electrochemistry and is analogous to passive steel behaviour. The same transition has been observed in:

  • Laboratory depolarisation and potential-shift studies [4]
  • Non-alkali-activated anodes
  • Overdriven alkali-activated anodes

Steel Passivation – Effect on Anode Current

It has been proposed [3] that decreasing current is driven by increasing steel passivity. This interpretation is electrochemically inconsistent. As steel becomes more passive, its potential shifts in the positive direction. For a galvanic system, this increases the driving voltage between zinc and steel, which would, all else being equal, tend to increase rather than decrease anode current.

Observed reductions in current therefore, cannot be attributed to steel passivation alone and must originate primarily from changes at the anode interface.

Post Passivation Behaviour

Once passivation occurs, current output becomes largely independent of remaining zinc mass or theoretical surface area, and exponential modelling is no longer applicable. The AF model is therefore not intended to describe post-passivation behaviour, a limitation that is now explicitly recognised.

Activator Resistivity Changes

It has been suggested that early current decay resulted from curing or resistivity changes in the activator putty. For this mechanism to account for the observed reduction, the resistivity of the activator would need to increase by several orders of magnitude over a relatively short period.

Such behaviour is inconsistent with:

  • Known curing behaviour of cementitious or polymeric activators
  • Independent laboratory measurements of activator resistivity
  • Observations from alkali-activated systems where similar activators exhibit stable resistivity but very different ageing behaviour

By contrast, the formation of zinc oxide/hydroxide corrosion layers several millimetres thick provides a physically plausible, experimentally supported explanation for the observed current limitation.

Zinc Potential Evolution

Potentiodynamic scans and long-term exposure tests demonstrate that:

  • Aged anodes show substantially less negative potentials ( −750 mV).
  • New alkali-activated zinc anodes exhibit corrosion potentials <−1100 mV vs Ag/AgCl.
  • Non-alkali-activated anodes can shift to even more positive values within a short period.

This progressive ennoblement of the zinc potential directly reduces the galvanic driving force and is consistent with corrosion-product-induced passivation and anode-controlled ageing. Some independent studies by BAM/ibac [4] corroborate this behaviour.

Implications for Future CP Design and Interpretation

The apparent contradiction between exponential decay and long-term constant current disappears once ageing is recognised as a multi-regime process:

  1. Geometry-controlled exponential decay (AF regime)
  2. Resistance-influenced decay due to gradual pore blocking
  3. Passivation-controlled residual current

Well-designed alkali-activated anodes delay the onset of Regime 3 above beyond the design life, allowing the AF model to be used

reliably for long-term prediction. Note. Systems that enter Regime 3 early must instead be designed based on the residual current.

Galvanic Anode Monitoring – Design Considerations

An explanation of the Exponential Ageing Model

 

 

Discussion

  • Exponential decay of galvanic anode current has been experimentally observed and theoretically justified.
  • Any deviation from exponential behaviour typically results from passivation and should not be interpreted as failure of the ageing model.
  • Differences between systems arise from activator chemistry, anode geometry, and degree of over-driving.
  • The AF remains a valid and necessary design parameter within its defined

Galvanic Anode Monitoring – Lessons Learnt

  • Current Density halves at regular time intervals found to be 3-15 years, depending on anode activator and type and degree of anode overdriving, a term described as “Ageing Factor”.
  • Exponential decline of current density up to the Design Limit is consistent with “Half-Life” principle.
  • Humidity and particularly temperature, modify current output

Conclusions and General Guidance

The normal service life of installed galvanic anodes is expected to be at least 15 years and possibly 20-30 years.

  • Current output of galvanic anodes is sustained for many years with a gradual exponential drop at a measured rate (Ageing Factor – AF).
  • The Ageing Factor can be built into the design of the anode system to predict minimum service life.
  • Enough knowledge has now been gained about anode behaviour over time to allow design to any required level of steel

References

  1. M. Stone & G.K. Glass “A critical assessment of the half-life Ageing term and failure to predict future galvanic anode behaviour” Corrosion Management, Issue 187, pp. 35-39, September/October 2025.
  2. Stone, W Carr & A Roberts “Analysis of the half-life “ageing-constant” theory for galvanic anodes: Analysing the model’s predictive power for CPT anodes” MATEC Web of Conferences 409, 02001 (2025) https://doi.org/10.1051/matecconf/202540902001.
  3. Dodds, C. Christodoulou, C.I. Goodier, Hybrid anode concrete corrosion protection – independent study, Proceedings of the Institution of Civil Engineers: Construction Materials, Vol. 171, 4, pp. 149-160, Aug. 1918.
  4. Federal Institute for Materials Research and Testing (BAM) and ibac – Institute for Building Materials Research at RWTH Aachen University “Performance of galvanic and hybrid anode systems for reinforced concrete structures” Final Report on Industrielle Gemeinschaftsforschung (IGF) Project no. 20408 N, 30/11/2022
  5. https://www.icorr.org/wp-content/uploads/2021/06/2021-03-30-ICorr-Aberdeen-Event-ICorr-Aberdeen-Presentation-30-03-21-Dr-George-Sergi-Vector-Corrosion.pdf
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A Significant professional milestone and a landmark for ICorr

A Significant professional milestone and a landmark for ICorr

The Institute of Corrosion (ICorr) is delighted to announce the successful completion of its first direct assessment for Chartered Engineer (CEng) registration, marking an important milestone in the Institute’s professional registration programme.

We are proud to congratulate Huwaynaa Al-Yahyai, Integrity Team Lead, BP, on achieving CEng status. This achievement recognises her professional expertise, commitment to excellence, and contribution to the engineering profession.

As one of the first applicants to undertake the ICorr direct assessment route, Huwaynaa’s achievement demonstrates both the high standards of the CEng registration process and ICorr’s growing role in supporting professional development and recognition within the corrosion industry.

Reflecting on her experience of the application and assessment journey, Huwaynaa shared:

“Becoming a Chartered Engineer (CEng) through the Institute of Corrosion (ICorr) is more than a credential. It reflects years of disciplined technical growth and hands-on experience in corrosion and integrity management and represents a commitment to delivering sound engineering judgement against internationally recognised standards in high-risk environments.

For me, it is a defining career milestone. It strengthens my credibility and positions me as a leader accountable for the outcomes of my engineering decisions, leading critical integrity decisions, influencing strategy, and being trusted with greater responsibility.

Earning it, though, is just the beginning. It comes with an ongoing commitment to developing as an engineer, leading with integrity, and playing an active part in raising the standard of the profession, whether through mentoring, sharing experiences and best practices, or challenging the way we work and grow as a discipline.”

Once again, our warmest congratulations to Huwaynaa!

As a Licensed Member of the Engineering Council, ICorr can now assess and register eligible members directly for professional registration, including:

  • Chartered Engineer (CEng)
  • Incorporated Engineer (IEng)
  • Engineering Technician (EngTech)

If you are already a Professional Member of ICorr and believe you meet the requirements of UK-SPEC, now is the perfect time to explore professional registration. Contact admin@icorr.org or ecreg@icorr.org for more information.