A D V A N C E D M A T E R I A L S & P R O C E S S E S | J U L Y / A U G U S T 2 0 2 2 4 6 iTSSe TSS iTSSe TSS features within the FOV cannot be brought into focus. The term “edge-rounding” connotes that the edge of the coating at the mount medium interface is not in plane with the rest of the coating. It can occur when the mount medium is softer than the coating and abrades faster than the coating. It can also be caused by highly resilient polishing papers that yield excessively into pores and along edges, increasing the polishing rate in those locations. The addition of Al2O3 particles to the cold-mount epoxy is one method to minimize edge rounding by adding hard particles to support the epoxy. ~iTSSe For more information: This article is an excerpt of a document prepared by the ASM Thermal Spray Society Accepted Practices Committee. Special thanks are extended to the committee members and the contributors of this paper: Elaine Motyka, Technetics Group, and Frank Accornero, Florida Institute of Technology, Center for Advanced Manufacturing. The authors may be reached at elaine.motyka@ technetics.com and faccornero@fit.edu. References 1. R.C. Tucker Jr., ed., ASM Handbook, Volume 5A, Thermal Spray Technology, 2013, https://doi.org/10.31399/asm. hb.v05a.9781627081719. 2. J.P. Sauer, Accepted Practices of Thermal Spray Technology: The Preparation and Evaluation of Thermal Spray Coatings: Mounting, Journal of Thermal Spray Technology, Vol 14 (No. 4), p 450-452, 2005, https://doi. org/10.1361/105996305X78043. 3. ASTM E1920-03(2021), Standard Guide for Metallographic Preparation of Thermal Sprayed Coatings, https:// doi.org/10.1520/E1920-03R21. FEATURE 12
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