Friction and Wear Behaviors of WC-Al2O3 Composite Paired with Si3N4 Ceramics and YG6 Cemented Carbide

SU Qingde; ZHU Shigen; DING Hao; BAI Yunfeng; DI Ping

doi:10.11973/jxgccl201903010

Materials and Mechanical Engineering > 2019 > 43(3): 50-54. > DOI: 10.11973/jxgccl201903010

SU Qingde, ZHU Shigen, DING Hao, BAI Yunfeng, DI Ping. Friction and Wear Behaviors of WC-Al₂O₃ Composite Paired with Si₃N₄ Ceramics and YG6 Cemented Carbide[J]. Materials and Mechanical Engineering, 2019, 43(3): 50-54. DOI: 10.11973/jxgccl201903010

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Friction and Wear Behaviors of WC-Al₂O₃ Composite Paired with Si₃N₄ Ceramics and YG6 Cemented Carbide

SU Qingde¹,
ZHU Shigen^1,2,
DING Hao^1,2,
BAI Yunfeng^1,2,
DI Ping^1,2

1. College of Mechanical Engineering, Shanghai 201620, China;
2. College of Mechanical Engineering Research Center of Advanced Textile Machinery of the Ministry of Education, Donghua University, Shanghai 201620, China

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Received Date: March 11, 2018
Revised Date: February 19, 2019

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Abstract

Abstract

WC-15wt%Al₂O₃ composite was prepared by vacuum hot-press sintering technique, and then subjected to dry sliding friction and wear tests under loads of 40, 80 N against Si₃N₄ ceramics and YG6 cemented carbide, respectively. The friction and wear behavior of the composite was investigated. The results show that the friction factor of the composite against Si₃N₄ ceramics was relatively high and fluctuated fiercely, whereas when against YG6 cemented carbide, the friction factor was relatively low and stable. The wear rate of the composite against Si₃N₄ ceramics was higher than that against YG6 cemented carbide at a lower load, whearas lower than that against YG6 cemented carbide at a heavier load. The wear mechanism of the composite under both loads of 40 N and 80 N was mainly fatigue wear, exhibiting features of microcracking, brittle fracture and pull-out of grains.
- WC-Al₂O₃ composite,
- Si₃N₄ ceramics,
- YG6 cemented carbide,
- friction and wear

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Friction and Wear Behaviors of WC-Al2O3 Composite Paired with Si3N4 Ceramics and YG6 Cemented Carbide

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Friction and Wear Behaviors of WC-Al₂O₃ Composite Paired with Si₃N₄ Ceramics and YG6 Cemented Carbide