| AZ31B合金热化学反应热喷涂复相陶瓷涂层制备及性能 |
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| 引用本文： | 马壮,邹积峰,王伟,李智超.AZ31B合金热化学反应热喷涂复相陶瓷涂层制备及性能[J].焊接学报,2011,32(12):46-50. |
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| 作者姓名： | 马壮 邹积峰 王伟 李智超 |
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| 作者单位： | 辽宁工程技术大学材料加工与表面技术研究所,阜新,123000 |
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| 基金项目： | 辽宁省教育厅创新团队基金 |
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| 摘 要： | 采用机械球磨和PVA（聚乙烯醇）造粒制成喷涂复合粉末，采用热化学反应火焰喷涂技术，在镁合金AZ31B表面制备Al2O3，基复相陶瓷涂层．利用x射线衍射（XRD）、扫描电镜（SEM）分析了喷涂复合粉末和复合陶瓷涂层的组成及形貌，并对涂层的热震性能、致密性、显微硬度和耐磨性进行测试．结果表明，复合粉末经12h球磨后有化学反...
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| 关 键 词： | 镁合金 热化学反应热喷涂 陶瓷涂层 性能 |
| 收稿时间： | 2010/10/20 0:00:00 |
Preparation and properties of composite ceramic coating on AZ31B alloy by thermo-chemical reaction spraying |
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| MA Zhuang,ZOU Jifeng,WANG Wei and LI Zhichao.Preparation and properties of composite ceramic coating on AZ31B alloy by thermo-chemical reaction spraying[J].Transactions of The China Welding Institution,2011,32(12):46-50. |
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| Authors: | MA Zhuang ZOU Jifeng WANG Wei and LI Zhichao |
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| Affiliation: | Institute of Materials Processing and Surface Technology, Liaoning Technical University, Fuxin 123000, China,Institute of Materials Processing and Surface Technology, Liaoning Technical University, Fuxin 123000, China,Institute of Materials Processing and Surface Technology, Liaoning Technical University, Fuxin 123000, China and Institute of Materials Processing and Surface Technology, Liaoning Technical University, Fuxin 123000, China |
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| Abstract: | The spraying composite powder was prepared by mechanical ball milling and polyvinyl alcohol(PVA) granulation. Al2O3-based composite ceramic coating was prepared on the surface of magnesium alloy AZ31B by thermo-chemical reaction spraying. XRD and SEM were used to analyze the composition and morphology of the spraying composite powder and composite ceramic coating. The thermal shock, compactness, microhardness and wear properties of the composite ceramic coating were investigated respectively. The results showed that chemical reaction had happened in composite powder after 12 hours ball milling and globular structure coated each other was formed after granulation. Thermo-chemical reaction was carried out in the process of preparing coatings. New phase such as Al3.21Si0.47, MgAl2O4 and Mg3.5Al9Si1.5O20 were found in the coating. The melting rate of composite ceramic coating was high and the combination of the coating and matrix was good. Mg element took place remarkable diffusion in the interface of composite coating. The thermal-shock times of this coating was 40, the porosity was 15.1% and the maximum microhardness value reached HV0.11016. The thermal shock, compactness, microhardness and wear properties of this coating was significantly better than the ones with common spraying coating. |
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| Keywords: | magnesium alloy thermo-chemical reaction spraying ceramic coating performance |
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