Slurry Erosion Behavior of F6NM Stainless Steel and High-Velocity Oxygen Fuel-Sprayed WC-10Co-4Cr Coating

Affiliation of Author(s):材料科学与技术学院

Journal:JOURNAL OF THERMAL SPRAY TECHNOLOGY

Key Words:abrasive wear cavitation F6NM steel slurry erosion WC-10Co-4Cr coating

Abstract:WC-10Co-4Cr coating was applied to the surface of F6NM stainless steel by high-velocity oxygen-fuel spraying. The slurry erosion behavior of the matrix and coating was examined at different rotational speeds using a self-made machine. This experiment effectively simulates real slurry erosion in an environment with high silt load. At low velocity (< 6 m/s), the main failure mechanism was cavitation. Small bubbles acted as an air cushion, obstructing direct contact between sand and the matrix surface. However, at velocity above 9 m/s, abrasive wear was the dominant failure mechanism. The results indicate that WC-10Co-4Cr coating significantly improved the slurry resistance at higher velocity, because it created a thin and dense WC coating on the surface.

ISSN No.:1059-9630

Translation or Not:no

Date of Publication:2017-02-01

Co-author:Cui, S. Y.,Miao, Q.,Huang, B. Z.,dcg,Chen, B. W.

Correspondence Author:Cui, S. Y.,lwp

Date of Publication:2017-02-01