采用脉冲电源，对发动机活塞用铝合金(ZL108)基体进行了微弧氧化处理。测定了陶瓷氧化物膜的表面粗糙度和膜层硬度，研究了电流密度和强化时间对陶瓷膜的硬度和耐磨性的影响。分析了影响表面粗糙度的因素。实验结果表明，随着电流密度和强化时间增加，膜层的表面粗造度增大，而膜层硬度则在电流密度超过8A/dm2后趋于稳定。其机理可归固于陶瓷氧化膜在强电流密度下的烧结。实验条件下对比磨损试验结果表明，铝合金活塞的耐磨性，经微弧氧化后提高3～4倍。
Cailiao Baohu2001, 34(1), 17～18(Ch). The micro-arc oxidizing of aluminum alloy(ZLO108) engine piston was carried out by using pulse power supply. Thesurface profile, roughness and wear resistance were determined It showedthat the roughness increased with time and current density increasing And the hardness value increased as the current density rising, reaching a con-stant value while current density exceeding 8 A/dm2.
参考文献
| [1] | 薛文彬,邓志威,来永春.LY12铝合金微弧氧化的尺寸变化规律[J].中国有色金属学报,1997(03):140-143. |
| [2] | 刘凤岭.微弧氧化与材料表面陶瓷化[J].材料保护,1998(03):22. |
| [3] | DTTRICH K H;Krysmann W;Kurze P et al.Structure and Properties of ANOF Layers[J].Crystal Research and Technology,1984,19(01) |
| [4] | Krysmann W;Kurze P;Dttrich H et al.Process Characteristics and Parameters of Anodic Oxidation by Spark Discharge(ANOF)[J].Crystal Research and Technology,1984,19(07) |
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