Weighted Shortest Path 문제를 해결하는 효율적인 분산 알고리즘 = A Distributed Algorithm for Weighted Shortest Path Problem

다국어 초록 (Multilingual Abstract)

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.