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    RISS 인기검색어

      Wear Behavior of Silicon Nitride Depending on Gas Pressure Sintering Conditions

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      https://www.riss.kr/link?id=E805088

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      Si_(3)N_(4) powder with 2 wt% Al_(2)O_(3) and 6 wt% Y_(2)O_(3) additives was sintered by the gas pressure sintering (GPS) technique. The unlubricated wear behavior depending on sintering conditions such as sintering temperature, pressure, and sintering time was investigated. When the sintering temperature and time increased, the larger elongated grains were formed and the microstructural heterogeneity increased. When sintering pressure increased, grain growth, however, was impeded. Also, the wear properties depended on microstructure and friction coefficient were related to grain size. Based on the experimental results, the wear properties were associated with initial friction coefficients as well as mechanical properties including fracture toughness and flexural strength.
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      Si_(3)N_(4) powder with 2 wt% Al_(2)O_(3) and 6 wt% Y_(2)O_(3) additives was sintered by the gas pressure sintering (GPS) technique. The unlubricated wear behavior depending on sintering conditions such as sintering temperature, pressure, and sinterin...

      Si_(3)N_(4) powder with 2 wt% Al_(2)O_(3) and 6 wt% Y_(2)O_(3) additives was sintered by the gas pressure sintering (GPS) technique. The unlubricated wear behavior depending on sintering conditions such as sintering temperature, pressure, and sintering time was investigated. When the sintering temperature and time increased, the larger elongated grains were formed and the microstructural heterogeneity increased. When sintering pressure increased, grain growth, however, was impeded. Also, the wear properties depended on microstructure and friction coefficient were related to grain size. Based on the experimental results, the wear properties were associated with initial friction coefficients as well as mechanical properties including fracture toughness and flexural strength.

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      목차 (Table of Contents)

      • Ⅰ. Introduction
      • Ⅱ. Experimental process
      • Ⅲ. Results and Discussion
      • 3.1. Effect of sintering temperature
      • 3.2. Effect of sintering time
      • Ⅰ. Introduction
      • Ⅱ. Experimental process
      • Ⅲ. Results and Discussion
      • 3.1. Effect of sintering temperature
      • 3.2. Effect of sintering time
      • 3.3. Effect of sintering pressure
      • Ⅳ. Conclusions
      • Acknowledgement
      • Ⅴ. References
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