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A. Röttger
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Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006364
EISBN: 978-1-62708-192-4
Abstract
This article provides a brief introduction to abrasive wear-resistant coating materials that contain a large amount of hard phases, such as borides, carbides, or carboborides. It describes some of the commonly used methods of producing thick wear-resistant coatings. The article also provides information on metal-matrix composites and cemented carbides. The three base-alloying concepts, including cobalt-, iron-, and nickel-base alloys used for wear-protection applications, are also described. The article compares the tribomechanical properties of the materials in a qualitative manner, thus allowing a rough materials selection for practitioners. It presents a brief discussion on hot isostatic pressing (HIP) cladding, sinter cladding, and manufacturing of thick wear-resistant coatings by extrusion or ring rolling. The article also discusses the processing sequence of thick wear-resistant coatings, namely, compound casting, deposition welding, and thermal spraying.
Proceedings Papers
ITSC 2010, Thermal Spray 2010: Proceedings from the International Thermal Spray Conference, 96-99, May 3–5, 2010,
Abstract
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The objective of this study is to investigate the feasibility of high velocity oxy-fuel (HVOF) spraying of tool steel coating containing high boron and high carbon. A full factorial experimental design was established to investigate the influence of process parameters on the coating formation. The microstructural investigations revealed that the tool steel containing ultrahigh boron and high carbon can be coated using HVOF. The coating microstructure does not seem to be conventional lamellar structure and consists of high density micro-cracks. However, the coating features superior hardness of about 980 HV and shows the potential for wear resistance applications.