Paper Title:

Slurry Erosive Wear Characteristics of Engineering Ceramics for Hydraulic Machinery

Periodical Key Engineering Materials (Volumes 280 - 283)
Main Theme High-Performance Ceramics III
Edited by Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages 1689-1692
DOI 10.4028/www.scientific.net/KEM.280-283.1689
Citation Juan Liu et al., 2007, Key Engineering Materials, 280-283, 1689
Online since February, 2007
Authors Juan Liu, Long Hao Qi, Hong Yuan Xu, He Zhuo Miao
Keywords Ceramic, Erosive Wear, Hydraulic Machinery, Wear Mechanisms
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Abstract

Engineering ceramics have a high application potential for wear-protection of different equipment used for electric power generating, mining and mineral industries. The ZTA (zirconia toughened alumina) and alumina (92%, 95%) have been prepared. Effects of varying the impact velocity and volume content of erodent particle and erosive time are investigated. Scanning electron microscopic examination of the eroded ceramic surfaces provides insights into the erosive wear mechanisms. The material removal processes include chipping out of lateral cracks caused by impact of the erodent particles, grain boundary cracking and grain pull out, as well as plastic deformation caused by the repeated sliding and impact of the particles.