铸铁喷涂渗铝工艺和性能
发布时间：2018-08-17 19:24
【摘要】：采用线材火焰喷涂制备铝基涂层,随后对涂层进行重熔和扩散处理.利用扫描电镜、X射线衍射仪、能谱仪、摩擦磨损实验仪等对涂层的成分、物相、耐高温氧化性能、耐蚀性能等进行分析测试.结果表明:涂层分为两层,外层的物相主要是Al、FeAl_3、内层是Fe_2Al_5和少量的FeAl_3;显微硬度有了很大程度的提高,峰值可达HV 950;渗铝试样在800、900℃进行高温氧化实验几乎不增重,抗氧化性能较铸铁可提升几十倍;同时试样也兼具良好的耐摩擦磨损和耐腐蚀性能.
[Abstract]:Aluminum based coatings were prepared by wire flame spraying, and then remelted and diffused. The composition, phase, high temperature oxidation resistance and corrosion resistance of the coating were analyzed and tested by means of scanning electron microscope (SEM), energy spectrometer (EDS) and friction and wear tester. The results show that the coating is divided into two layers, the outer layer is mainly Alu Feal _ 3, the inner layer is Fe_2Al_5 and a small amount of Feal _ 3, the microhardness has been greatly improved, the peak value can reach to HV950, and the aluminizing sample has almost no weight gain in high temperature oxidation experiment at 800900 鈩，
本文编号：2188645
[Abstract]:Aluminum based coatings were prepared by wire flame spraying, and then remelted and diffused. The composition, phase, high temperature oxidation resistance and corrosion resistance of the coating were analyzed and tested by means of scanning electron microscope (SEM), energy spectrometer (EDS) and friction and wear tester. The results show that the coating is divided into two layers, the outer layer is mainly Alu Feal _ 3, the inner layer is Fe_2Al_5 and a small amount of Feal _ 3, the microhardness has been greatly improved, the peak value can reach to HV950, and the aluminizing sample has almost no weight gain in high temperature oxidation experiment at 800900 鈩，
本文编号：2188645
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