S114035 燃焼合成法によるSi合金のトライボロジー特性([S11403]機素潤滑設計部門第17回卒業研究コンテスト(3))

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To improve the fuel efficiency of automobiles, the development of lightweight and high-strength material is required. Silicon, as a raw material for this purpose has attracted attention. So as method using silicon, Si alloys have been developed using self-propagating high-temperature synthesis (SHS). It is possible to design material with different properties by varying the ratio of Si, Al, 0, and N because the composition of Si alloys is similar to that of 13-SiA1ON. In the present study, we prepared two types of Si alloys, which are Si (S 1:44.9 %, A1:10.1 %, 0:9.39 %, N:31.4 %) and S2 (S1:36.6 %, A1:18.2 %, 0:12.3 %, N:26.6 %), and used Si3N4 as a comparative material. We investigated the surface strength and tribological properties performing scratch test and ball on disk type sliding wear test at atmosphere without lubricant. In scratch test, the load at which the fracture progresses to large-scale brittle fracture becomes larger in the order of S I , Si3N4, and S2. It's found that Si alloys have better friction and wear properties than Si3N4 in the sliding wear test.
一般社団法人日本機械学会の論文
2011-09-11