鲍爱莲,刘万辉.铝合金表面微弧氧化陶瓷层耐磨性[J].表面技术,2007,36(6):48-49.
BAO Ai-Iian,LIU Wan-hui.Wear Resistance of Micro-arc Oxidized Ceramic Layers on Aluminum alloy[J].Surface Technology,2007,36(6):48-49 |
| 铝合金表面微弧氧化陶瓷层耐磨性 |
| Wear Resistance of Micro-arc Oxidized Ceramic Layers on Aluminum alloy |
| 投稿时间：2007-08-31 修订日期：2007-12-10 |
| DOI： |
| 中文关键词: 微弧氧化 铝合金 陶瓷层 耐磨性 |
| 英文关键词:Micro-arc Oxidation Aluminum alloys Ceramic Coating Wear resistance |
| 基金项目:黑龙江省教育厅资助项目(11521249)。 |
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| 中文摘要: |
| 利用微弧氧化技术在7075铝合金表面形成微弧氧化陶瓷膜层，通过SEM、XRD手段分析了微弧氧化陶瓷层的显微结构、表面形貌和相组成，并在HIT-Ⅱ摩擦磨损试验机上测试了陶瓷膜层的摩擦学性能。结果表明：7075铝合金表面的微弧氧化陶瓷膜层由疏松层、致密层构成，其相组成主要是a-Al2 03和，y-Al2 03两相；氧化陶瓷层与基体结合良好，厚度为25 - 45 μm，表面硬度可达到1900HVo.i左右；微弧氧化表面处理技术可以显著提高铝合金的表面耐磨性，在与GCr15钢球对磨时，膜层具有较低的磨损率，但摩擦因数相对较高。 |
| 英文摘要: |
| The structure and property aspects of oxide films formed on 7075 aluminum alloys by micro-arc oxidation in alkali-silicate electrolytic solution was discussed. Microstructure, surface morphology and phase composition of the ceramic coatings were investigated by SEM and XRD. Distribution of hardness along the coating thickness was determined by micro-hardness analyses. The friction and wear behavior of the oxide films against steel counterparts was evaluated with a friction and wear tester. The results show that the micro-arc oxidation coatings composed mainly of a-A1203 and 'y-Al203 phase are dense and uniform, which indicates that the wear resistance of Al alloy could be improved obviously by micro-arc oxidation. The films possess a beneficial combination of 25 ~ 45 μm thickness, HVo.11900 micro-hardness and provide a low wear rate but a relatively high friction coefficient against GCr15 steel under dry friction condition. |
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