Effect of rare earth on oxidation resistance of iron base fluxing alloy spray-welding coating
Effect of rare earth on oxidation resistance of iron base fluxing alloy spray-welding coating
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DOI：
10.1016/s0925-8388(00)00863-x
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发表时间：
2000-10-12
影响因子：
6.2
通讯作者：
Ying, GF
中科院分区：
文献类型：
--
作者：
Yi, W;Zheng, CQ;Ying, GF
近年来，稀土在喷焊材料中的应用研究越来越受到人们的重视。铁基助熔合金粉末具有价格低廉、耐磨性好等优点，被广泛用作喷焊材料。但其高温抗氧化性较差，因此，本研究采用稀土元素对其进行改性。采用熔融雾化法制备了含混合稀土的铁基助熔合金粉末，采用氧化物-乙炔火焰喷涂法制备了涂层试样。研究了稀土对铁基助熔合金喷焊层抗氧化性能的影响。利用扫描电镜（SEM）和X射线电子能谱（EDAX）对涂层试样的氧化层进行了分析。结果表明，混合稀土合金的加入量为0.2。在此基础上，对稀土的作用机理进行了探讨。(C)2000年爱思唯尔科学有限公司All rights reserved.
Recently, thr studies on application of rare earth (RE) in spray-welding materials has attracted more and more attention. Iron base fluxing alloy powder has been widely used as spray-welding materials due to some of its advantages, such as lower price and good wear resistance. However, its oxidation resistance at high temperature is poor, therefore, RE has been used to improve its properties in the present study. The iron base fluxing alloy powder containing mixed RE alloy were prepared by using the smelting-atomizing process, the coating samples were prepared by using the oxide-acetylene flame spraying process. And the effect of RE on oxidation resistance of iron base fluxing alloy spray-welding coating has been studied. Moreover, the oxide layer of the coating samples was analyzed by using scanning electron microscope (SEM) and the X-ray of electron dispersion analysis (EDAX). It has been shown that the addition amount of mixed RE alloy of 0.2. wt% is suitable, Based on the experimental results the mechanism of RE function has been discussed. (C) 2000 Elsevier Science S.A. All rights reserved.