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

采用湿喷砂技术对高硅铝合金（高硅铝合金）进行表面加工。该浆料，即含有氧化铝颗粒的纯水与1。将直径为2 μ m、浓度为3%（质量分数）的喷丝头喷到高硅铝合金试样上。浆料的冲击角设定为45至90度。结果表明，高硅铝合金的加工表面可分为两种形貌。一种是具有Si凸起区域的表面，另一种是具有Si凹坑的表面。

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.