范春,龙威,周小平.Al含量对Al-Mg2Si复合涂层耐蚀耐磨性能的影响[J].表面技术,2018,47(2):225-230.
FAN Chun,LONG Wei,ZHOU Xiao-ping.Influence of Al Content on Corrosion and Wear Resistance of Al-Mg2Si Composite Coatings[J].Surface Technology,2018,47(2):225-230 |
| Al含量对Al-Mg2Si复合涂层耐蚀耐磨性能的影响 |
| Influence of Al Content on Corrosion and Wear Resistance of Al-Mg2Si Composite Coatings |
| 投稿时间：2017-08-03 修订日期：2018-02-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.02.035 |
| 中文关键词: AZ31B镁合金 火焰喷涂 Al-Mg2Si复合涂层 耐蚀性 耐磨性 |
| 英文关键词:AZ31B magnesium alloy flame spraying Al-Mg2Si composite coating corrosion resistance frictional wear |
| 基金项目:国家自然科学基金（51171062） |
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| 中文摘要: |
| 目的 在AZ31B镁合金表面火焰喷涂制备Al-Mg2Si复合涂层，研究其耐腐蚀和耐磨性能。方法 用SEM、电化学测试仪、高速往复摩擦磨损测试仪和超景深三维显微镜检测分析不同成分配比的Al-Mg2Si复合涂层的耐腐蚀和摩擦磨损性能。结果 Al-Mg2Si复合涂层的电位较AZ31B镁合金基体正，且Al含量越少，电位正移越明显。Al(20%)-Mg2Si复合涂层的自腐蚀电位正移得最多，正移了0.5288 V；自腐蚀电流密度最小，为3.298×10−6 A/cm2。Al加入量越少，复合涂层的磨损率和摩擦系数越小，当Al质量分数为20%时，两者均达到最小值，分别为2.48×10−4 mm3/(N∙mm)和0.25。结论 Al含量越少，Al-Mg2Si复合涂层的耐蚀和耐磨性能越好。 |
| 英文摘要: |
| This paper aims to study the corrosion and wear of Al-Mg2Si composite coating by spraying it on AZ31B magnesium alloy surface. The corrosion resistance and wear resistance of coatings with different composition proportions were characterized by scanning electron microscopy, electrochemical testing, friction wear testing machine and ultra-depth three-dimensional Microscope. It showed that the corrosion resistance of Al-Mg2Si composite coating sealed was much higher than that of AZ31B magnesium alloy, and the less the content of Al, the more obvious the potential shift was. The positive displacement of Al (20%)-Mg2Si coating was the most, which was shifted 0.5288 V, and the corrosion current density was minimum 3.298×10−6 A/cm2. Furthermore, the less the amount of Al addition, the smaller the wear rate and friction coefficient of the coating, and the wear rate that was 2.48×10−4 mm3/(N∙mm) and friction coefficient which was 0.25 were lower when the content of Al was 20%. The less Al content of Al-Mg2Si composite coating is, the better the corrosion and wear resistance are. |
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