SEDL / STP / STP1278-EB / STP16107S

Studies on the Characterization and Tribological Behavior of Self-Propagating High-Temperature Synthesis (SHS) Coatings of Chromium Cermet

Li, L
Assistant professor and professor, Lanzhou Institute of Chemical Physics, Lanzhou,

Qunji, X
Assistant professor and professor, Lanzhou Institute of Chemical Physics, Lanzhou,

Pages: 14    Published: Jan 1996

Download this paper for $25 PDF (456K)          View License Agreement
Abstract

A chromium cermet coating, about 150 μm thick, was formed on carbon steel with the gas transport self-propagating high-temperature synthesis (SHS) coating process. The present paper is concerned with the preparation method, property evaluation, and abrasive wear behavior of the SHS coatings. The experiment reveals that there is excellent adhesion between the coating and the substrate, with less matrix damage and good abrasive wear resistance compared with chemical vapor deposition (CVD)-Cr⁷C³ coatings. Investigations indicated that an intense metallurgical interaction, gradient composition distribution, and unique forming process are the major reasons for the superior performance of the SHS coatings. It is analytically shown that there is a relationship between the size of the abrasive, the coating thickness, and the abrasive wear resistance.