Development of low friction and wear resistance surface manufacturing method of hard particles reinforced aluminum alloy

采用湿法喷砂技术对高硅铝合金(高硅铝合金)表面进行加工。将含1.2μm氧化铝颗粒的纯净水以3%的质量分数喷射到高硅铝合金试件上。泥浆的撞击角设置在45度到90度之间。结果表明，高硅铝合金加工表面可分为两种形貌类型。一种是含硅凸面的表面，另一种是含硅韧窝的表面。

The surface of high silicon aluminum alloy(high Si-Al Alloy) was machined by wet blast technique. The slurry, that is pure water contained with alumina particles with 1. 2μm in diameter by a concentration of 3 mass% is jetted on the high Si-Al alloy specimen. The impingement angle of the slurry was set from 45 to 90 degrees. As a result, the processed surface of high Si-Al alloy was classified into two types of topography. One is the surface with convex areas of Si, and the other is the surface with dimples of Si.