SiCウィスカ強化アルミニウム合金の耐キャビテーション・エロージョン性
1992 年 58 巻 550 号 p. 909-915
詳細
1992 年 58 巻 550 号 p. 909-915
Cavitation erosion of a SiC-whisker-reinforced aluminum composite (FRM) was studied by vibratory erosion tests in ion-exchanged water, and SEM observations of the eroded surfaces and erosion particles. The FRM shows fairly good erosion resistance. The FRM made by a high-pressure infiltration process is superior to that by a powder metallurgy process. The erosion resistance of the former shows good correlation with H2B/E (HB : Brinell hardness, E : elastic modulus). The FRM in which the volume fraction of the whiskers is more than 30% shows almost the same resistance as high-carbon steel and stainless steel. These behaviors are because the whiskers prevent the plastic deformation of the matrix metal and the growth of eroded cracks, resulting in decrease of the size of erosion particles.
