Effect of impingement angle and WC content on high temperature erosion behavior of SiC-WC composites |
| |
| Affiliation: | 1. Department of Metallurgical and Materials Engineering, Indian Institute of Technology (IIT) Roorkee, Roorkee 247667, India;2. Functional Ceramics Laboratory, Department of Materials Science and Engineering, The University of Seoul, Seoul 02504, Republic of Korea;1. Fraunhofer Institute for Ceramic Technology and Systems, Winterbergstr. 28, 01277 Dresden, FRG;2. Institute of Material Science, TU Dresden, Helmholtzstr. 7, 01069 Dresden, FRG;1. School of Materials Science and Technology, University of Science and Technology Beijing, Beijing 100083, China;2. Beijing General Research Institute of Mining and Metallurgy, Beijing 100160, China;3. School of Mechatronic Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China |
| |
| Abstract: | Hot pressed dense SiC-(0, 10, 30 or 50 wt%)WC composites were subjected to erosion against SiC particles at 800 °C. Effects of WC content and angle of impingement (30°, 60° or 90°) on the erosion performance of composites were evaluated. Erosion rate ranged from 2.1 × 102 mm3/kg to 7.7 × 102 mm3/kg with varying WC content or angle of impingement. The erosion rate of the composites increased with increasing the impingement angle from 30° to 90°, and decreased with WC content up to 30 wt%. Minimum and maximum erosion wear rates were obtained for SiC-30 wt% WC composites at 30° and for SiC-50 wt% WC composites at normal impact, respectively. Grain fracture and pull-out were observed as major mechanisms of material removal for the composites. Decreased angle of impingement led to reduced grain fracture and pull-out, and hence reduction in material removal. Owing to increased fracture toughness with incorporation of WC particles, the composites showed less fracture and removal of WC particles up to 30 wt% reinforcement. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
