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Corrosion Chronicles: Daily Summaries Delivered
by Materials Technology Institute
An original podcast series from the Materials Technology Institute, focused on materials in the processing industry and the experts within the community.
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- 3 weeks ago57 min
Inside the Cooling Water Triangle
In this episode, co-hosts Heather Allain and Marc Cook welcome Gordon Johnson, site development manager at Solenis, for a wide-ranging discussion on water systems and the challenges of maintaining efficient, reliable heat exchanger performance. Gordon breaks down the “cooling water triangle” of bioaccumulation, deposits and corrosion, and explains how each can affect equipment performance and water treatment strategies. The conversation explores heat exchanger design, biofilm removal, online cleaning methods and alternative approaches to water treatment, as well as the environmental considerations surrounding drinking and industrial water. Gordon also looks back at the replacement of hexavalent chromium, or Chrome 6, in water systems and its connection to the origins of MTI, while discussing when alloy upgrades and protective coatings can help address water-side corrosion and extend equipment life. This episode is sponsored by Tricor Metals and Rolled Alloys. Corrosion Chronicles is produced by Association Briefings.
- Sep 2, 202655 min
FRP Flange Design
In this episode, co-hosts Heather Allain and Marc Cook welcome Bruce Hebb, senior engineer at RPS Composites Inc., for a deep dive into fiber-reinforced plastic (FRP) flange design and the factors that influence performance and reliability. Bruce explains the differences between full-face, raised-face and lap joint, or Vanstone, flange configurations, including how gasket selection, bolt torque and load distribution can affect sealing and stress on FRP components. The conversation explores current ASME design standards, the importance of proper construction methods and the challenges engineers face when specifying and evaluating FRP flanges. Bruce also discusses an ongoing MTI project focused on developing a standardized design procedure for lap joint flanges using finite element analysis and physical testing, with the goal of providing end users and fabricators with clearer, more consistent guidance for designing and building reliable FRP flange systems. This episode is sponsored by Tricor Metals and Rolled Alloys. Corrosion Chronicles is produced by Association Briefings.
- Aug 5, 20261h 9m
Understanding FMECA, RCA, and Value Engineering
In this episode, co-hosts Heather Allain and Marc Cook welcome Maria Jose Oestergaard to explore three essential reliability and continuous improvement tools: Failure Modes, Effects, and Criticality Analysis (FMECA), Root Cause Analysis (RCA), and Value Engineering (VE). Maria Jose explains when to use each methodology, how to define the scope of an analysis, and the importance of assembling the right team and documenting findings throughout the process. She also discusses common triggers for implementing these tools, how organizations can leverage the results to improve performance, and when it makes sense to rely on internal expertise versus outside consultants. This episode is sponsored by Tricor Metals and Rolled Alloys. Corrosion Chronicles is produced by Association Briefings.
- Jul 1, 202653 min
The Science of Bonded Liners
In this episode, Michael Krauss, sales director at Knight Material Technologies, joins co-hosts Heather Allain and Marc Cook to discuss bonded lining systems and the materials considerations that influence long-term performance. Michael explains the different types of fabric backings, adhesives, and their ideal applications, while outlining best practices for installing bonded sheets and verifying bond integrity through pull-off testing and nondestructive evaluation methods. The conversation also highlights MTI research on cap strips and current work examining temperature ramp rates for bonded liners, offering practical insights for engineers and plant operators seeking to improve reliability and extend equipment life. This episode is sponsored by Tricor Metals and Rolled Alloys. Corrosion Chronicles is produced by Association Briefings. Show notes Polymer Cap Strip Welding Project Final Report - https://access.mti-global.org/record/900?v=pdf FEA Based Analysis of Thermal Ramp Rate Effects on Thermoplastic Liner Adhesion (445) - https://www.mti-global.org/communities/community-home/librarydocuments?LibraryKey=7e6c78de-dcd7-4090-b9d8-019bb284a855
- Jun 3, 20261h 2m
SEM & EDS in Failure Analysis: Let the Sample Tell the Story
In this episode, failure analysis expert Tedd Anastas of Anastas Technical Services and Brent Moore of Moore Analytical join co-host Heather Allain and guest host Andrew Rentsch, Materials Engineer at Huntsman Corporation, for a practical discussion on scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and their role in failure analysis and materials investigations. The conversation explores how SEM differs from optical microscopy, how SEM paired with EDS can reveal important chemical and microstructural clues, and why EDS results are often best treated as qualitative indicators rather than precise quantitative measurements. Tedd and Brent discuss detection limits, normalized compositions, false positives, fatigue striations, fracture surface interpretation, contaminants, inclusions, non-metallic materials, sputter coating, and elemental mapping. Along the way, they share case study examples, practical investigation tips, and a few unexpected detours involving dinosaur eggs and wig hair. This episode is sponsored by Tricor Metals and Rolled Alloys. Corrosion Chronicles is produced by Association Briefings.
- May 6, 20261h 5m
Providing Materials Expertise to Process Commercialization
In this episode, Richard Clapp, retired principal consultant from DuPont, joins co-hosts Heather Allain and Marc Cook for a discussion on the role of materials expertise in process commercialization. Drawing on decades of industry experience, Richard outlines the three primary types of process commercialization and the institutional challenges companies often face when scaling new processes from the bench to production. The conversation explores how impurities, feedstock variability, and solids handling can introduce unexpected complications, as well as why engineers tend to take conservative approaches to materials recommendations during commercialization efforts. Richard also breaks down common “show stoppers” and explains the importance of the three C’s—corrosion, compatibility, and clean-up—when evaluating process systems. Additional topics include corrosion testing at both bench and pilot scale, the subtle but important differences that can exist between seemingly identical plants, considerations when using toll manufacturers for pilot operations, and practical advice for organizations navigating process commercialization projects. This episode is sponsored by Tricor Metals and Rolled Alloys. Corrosion Chronicles is produced by Association Briefings.
- Apr 1, 202642 min
Hydrofluoric Acid and Anhydrous Hydrogen Fluoride - Part 2
In this episode, the second installment of a two-part series, Bert Jennings, owner of Jennings Materials Consulting in Spring, Texas, rejoins co-hosts Heather Allain and Marc Cook to continue their discussion on hydrofluoric acid (HF) and anhydrous hydrogen fluoride (AHF) service. Building on Part 1, the conversation shifts to detection, materials, and real-world application. Bert outlines key NDE techniques for identifying cracking and hydrogen blistering, then dives into weld practices and the importance of proper stress relief in carbon steel systems. The group also explores alternative materials, including austenitic stainless steels, ceramics, and glass, along with a “learn from failures” story that highlights the consequences of small oversights. The episode wraps with insights on nickel alloys, welding challenges, and the role of FRP and fluoroplastics—reinforcing that success in HF service depends on both material selection and execution. This episode is sponsored by Tricor Metals and Rolled Alloys. Show Notes Related reference for MTI members: MS-4 Materials Selector for Hazardous Chemicals: Hydrogen Fluoride and Hydrofluoric Acid Non-members: Visit the MTI bookstore. Corrosion Chronicles is produced by Association Briefings.
- Mar 4, 202642 min
Hydrofluoric Acid and Anhydrous Hydrogen Fluoride - Part 1
In this episode, the first installment of a two-part series, Bert Jennings, owner of Jennings Materials Consulting in Spring, Texas, joins co-hosts Heather Allain and Marc Cook for a technical discussion on hydrofluoric acid (HF) and anhydrous hydrogen fluoride (AHF) service. Bert begins by outlining where HF is commonly used and addressing common industry tropes and misconceptions about how the fluid behaves in process environments. He explains what “anhydrous” truly means in practical terms, including how dry anhydrous hydrogen fluoride must be and why strict moisture control is essential. The conversation dives into the unique hazards associated with HF, particularly in carbon steel systems. Bert discusses hydrogen blistering, hydrogen-assisted stress corrosion cracking (HASCC), and the influence of hardness on material performance. He also examines how residual elements in carbon steel can affect corrosion resistance and cracking susceptibility, highlighting why small compositional differences can lead to significant performance impacts in HF service. The episode concludes with practical considerations for materials selection, inspection, and risk mitigation, setting the stage for deeper exploration in Part 2 of the series. This episode is sponsored by Tricor Metals and Webco Industries. Show Notes Related reference for MTI members: MS-4 Materials Selector for Hazardous Chemicals: Hydrogen Fluoride and Hydrofluoric Acid Non-members: Visit the MTI bookstore. Corrosion Chronicles is produced by Association Briefings.
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About Corrosion Chronicles
An original podcast series from the Materials Technology Institute, focused on materials in the processing industry and the experts within the community.
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