首页|Improving abrasive wear resistance of Si_3N_4 ceramics with self-matching through tungsten induced tribochemical wear

Improving abrasive wear resistance of Si_3N_4 ceramics with self-matching through tungsten induced tribochemical wear

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  • NSTL
  • Elsevier
Si_3N_4 ceramics with 0 vol% and 5 vol% tungsten particles were fabricated by gas pressure sintering. Commercial Si_3N_4 ceramic balls were used as the tribo-pair to test the influence of the tungsten particles on the wear resistance of Si_3N_4 ceramics. The tungsten particles in the samples were exfoliated and oxidized during the rubbing process. The tungsten oxide was uniformly doped into the wear debris, which turned the harmful exfoliated abrasives into a useful tribo-film. Compared with the monolithic Si_3N_4 ceramic, the abrasive wear of Si_3N_4 ceramics with introducing tungsten particles was almost eliminated, and the oxidative wear and surface fatigue were also reduced. The specific wear rate was reduced by more than an order of magnitude, from 4.70 × 10~(-6) mm~3 N~(-1)·m~(-1) to 3.78 × 10~(-7) mm~3 N~(-1)·m~(-1).

Silicon nitrideWear resistanceTungstenAbrasive wearTribochemical wear

Lujie Wang、Zhuhui Qiao、Qian Qi、Yuan Yu、Tongyang Li、Xuejian Liu、Zhengren Huang、Weimin Liu、Huaguo Tang

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State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences

School of Materials Science and Engineering, Shandong University of Science and Technology

State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences

2022

10.1016/j.wear.2022.204254

Wear

Wear

EISCI
ISSN：0043-1648
年,卷(期)：2022.494/495
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