Ezechukwu Anyanwu

Ezechukwu Anyanwu, Ph.D.

Associate
Materials & Corrosion Engineering
Menlo Park

Dr. Anyanwu specializes in investigation of corrosion behavior of metals in relation to their service environment. He applies his expertise to the understanding of aqueous solution chemistry and how it relates to corrosion behavior of materials, the formation of corrosion product layers, and investigating the protective properties of these layers in adverse flow conditions. Dr. Anyanwu’s expertise also includes the application of electrochemical, mechanical testing and other analytical techniques (such as SEM, EDS, XRD, metallography and profilometry) to evaluate the performance of materials used in different applications such as oil and gas pipelines, water pipes and medical devices. Dr. Anyanwu also has a strong background in corrosion science, material characterization and computational fluid dynamics (CFD).

Before joining Exponent, Dr. Anyanwu earned his doctorate degree in Chemical Engineering at Ohio University where he investigated the corrosion behavior of carbon steel in flowing aqueous environment. In his research, Dr. Anyanwu studied the contributing effects of mass transfer rates and flow generated wall shear stress to the corrosion behavior of carbon steel in a hydrogen sulfide environment. He also used electrochemical and analytical methods to study how iron carbide present in steel microstructure affects the development of iron sulfide layers. The integrity of these corrosion product layers in adverse flow conditions was investigated by subjected them to high shear stress conditions while monitoring the corrosion rates of the underlying metal. Dr. Anyanwu related the mechanical properties of these layers (such as interfacial shear strength and hardness), evaluated through mechanical testing techniques, to their performance in flow conditions typical in oil pipelines. As a graduate assistant at Ohio University, Dr. Anyanwu also served as a teaching assistance for the chemical engineering problem solving class for freshman students, and advanced momentum transfer class for graduate students.

Dr. Anyanwu also has a master’s degree in Chemical Engineering from University of Dayton, Ohio. His thesis research involved the investigation of passivation and pitting behavior of high strength low alloy steel (HSLA) steel in aqueous environment using electrochemical techniques. He also tested the susceptibility of this material to stress corrosion cracking in simulated field environments using slow strain rate testing method.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Chemical Engineering, Ohio University, 2019
  • M.Sc., Chemical Engineering, University of Dayton, 2014
  • B.Sc., Industrial Chemistry, Abia State University, Nigeria, 2006
  • Ohio University Graduate Student Scholarship, 2014-2018

    NACE Leadership Program Scholarship, 2018

Publications

Anyanwu, E.J., Prieto, C., Brown B., Singer, “Mechanical Properties of a Mackinawite Corrosion Product Layer” NACE 2019

Prieto, C., Anyanwu, E.J., Young D., Singer, “Mechanical Characterization and Adherence of Iron Carbonate on an X65 Steel” NACE 2019

Anyanwu E.J. “Low Alloy Steel Susceptibility to Stress Corrosion Cracking in Hydraulic Fracturing Environment”. M.Sc. Thesis, University of Dayton, OH, 2014

Anyanwu E.J. “The Effect of Flow on the Development and Retention of Iron Sulfide Corrosion Product Layers”. Ph.D. Dissertation, Ohio University, OH, 2019

Publications

Anyanwu, E.J., Prieto, C., Brown B., Singer, “Mechanical Properties of a Mackinawite Corrosion Product Layer” NACE Corrosion Conference, Nashville, April 2019

Prieto, C., Anyanwu, E.J., Young D., Singer, “Mechanical Characterization and Adherence of Iron Carbonate on an X65 Steel” NACE Corrosion Conference, Nashville, April 2019

Anyanwu, E.J., Brown B., Singer, “Development of an Experimental Setup which Enables High Flow Conditions and its Implementation in the Study of Iron Sulfide Layer Protectiveness” NACE Corrosion Conference, Nashville, April 2019

Anyanwu, E.J., “The effect of Flow and the Development and Retention of Iron Sulfide Corrosion Product Layer” Corrosion Center Joint Industry Project (CC-JIP) Advisory Board Meeting, Ohio University, Oct 2018

Anyanwu, E.J., Brown B., Nesic, S., Singer, “Development and Characterization of a New Corrosion Test Set-up Enabling Controlled Water Chemistry and Representative Flow Conditions” NACE Corrosion Conference, Phoenix, April 2018

Anyanwu, E.J., “Mechanical Characterization of Mackinawite” Corrosion Center Joint Industry Project (CC-JIP) Advisory Board Meeting, Ohio University, April 2018.

Anyanwu, E.J., “Impacts of Mass Transfer and Shear Stress on the Development of Mackinawite Layer” Corrosion Center Joint Industry Project (CC-JIP) Advisory Board Meeting, Ohio University, April 2018.

Anyanwu, E.J., “Effect of Iron Carbide and Flow on Iron Sulfide Layer Development” Corrosion Center Joint Industry Project (CC-JIP) Advisory Board Meeting, Ohio University, Oct 2017.

Poster Presentations

Anyanwu E.J., “Development of Iron Sulfide Layers under Controlled Water Chemistry and Representative Flow Conditions” NACE Corrosion Conference, Phoenix, April 2018.

Anyanwu E.J., Hansen D.C., Brossia, S., “Low Alloy Steel Susceptibility to Stress Corrosion Cracking in Hydraulic Fracking Environment” University of Dayton Stander Symposium, April 2014.

Prior Experience

Graduate Research Assistant, Institute for Corrosion and Multiphase Technology, Chemical Engineering, Ohio University, 2014-2018

Teaching Assistant, Ohio University, 2015

Teaching Assistant, University of Dayton, Department of Chemical and Materials Engineering, 2013-2014

Graduate Research Assistant, University of Dayton Research Institute, Ohio, 2012-2014

Research Intern, Det Norske Veritas (DNV-GL), 2012, 2013

Intern, TOTAL, Nigeria 2008

Academic Appointments

Graduate Assistant, Chemical and Biomolecular Engineering Department, Ohio University, 2014-2018

Professional Affiliations

National Association of Corrosion Engineers (NACE)

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Chemical Engineering, Ohio University, 2019
  • M.Sc., Chemical Engineering, University of Dayton, 2014
  • B.Sc., Industrial Chemistry, Abia State University, Nigeria, 2006
  • Ohio University Graduate Student Scholarship, 2014-2018

    NACE Leadership Program Scholarship, 2018