Luis Guilherme, PhD

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Luis Henrique Guilherme, PhD, is Technical Director of Group ACW. He provides engineering services for inspections, electropolishing, and passivation treatments in projects based in Brazil, the US, Canada, the UK, and Germany. He is the Principal Researcher at PIPE/FAPESP for industrial applied research of fi eld electrochemical surface inspections and optimization of passivation treatments of stainless steel. He is the author of more than 10 peer-reviewed articles and two granted patents. He has experience with welding process and metallurgy, design of pressure vessels and tanks, EIS, chemical surface analysis, passive film characterization and modification, surface engineering, and duplex stainless steel. He holds a PhD in materials science and engineering focused on surface engineering and welding of stainless steel for bioprocessing applications. He joined ISPE in 2023.

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Figure 1: A: Portable electrochemical minicell tool for onsite stainless steel surface inspection. B: EIS data acquisition through Bluetooth connection.
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Electrochemical Techniques for Onsite Surface Qualification

Pharmaceutical critical utilities are typically built of 316L stainless steel; nevertheless, surface degradation has been reported due to the occurrence of different phenomena. This article aims to explain how field electrochemical techniques using a portable tool can be an effective method for surface inspection, qualification, and monitoring. The surface finish assessment considered...