两相流抗磨蚀合金喷熔层的耐磨性

钢铁研究学报, 2007, 19(11): 43-0.

两相流抗磨蚀合金喷熔层的耐磨性

1.1. 兰州工业高等专科学校机械工程系, 甘肃兰州 730050)

2.2. 兰州理工大学甘肃省省部共建有色金属新材料国家重点实验室, 甘肃兰州 730050

1.1. Mechanical Engineering Department, Lanzhou Polytechnic College, Lanzhou 730050, Gansu, China

2. 2. State Key Laboratory of New Nonferrous Metal Materials, Lanzhou University of Science and Technology, Lanzhou 730050, Gansu, China

关键词：两相流合金;抗磨蚀合金;稀土;喷熔层;耐磨性

Wear Resistance of Spray Welded Alloy Powder Coatings for TwoPhase Flow Pump

ZHANG Zhenyu , WANG Zhiping , LIANG Bunü

Keywords： twophase flow pump;abrasion resistant alloy;rare earth;spray welded coating;wear resistance

采用氧乙炔火焰喷熔工艺在45号钢表面喷覆两相流抗磨蚀合金(NiCrWCe)喷熔层，用扫描电子显微镜和X射线衍射仪分析了这种喷熔层的显微组织结构、物相组成和性能，并对喷熔层的耐磨性进行了试验研究。结果表明：两相流抗磨蚀合金喷熔层与基体形成了牢固的冶金结合，结合层中含有较高比例的硬质相；稀土可显著提高喷熔层的耐磨性；在试验条件下，两相流抗磨蚀合金喷熔层的耐磨性明显高于ZGCr5Mo及Cr18Ni12Mo2Ti合金。

The abrasion and erosion resistant alloy coating for twophase flow pump on the surface of No45 steel was prepared using flame spraying method. The microstructure and phase structure of coating were analyzed by means of SEM and Xray diffraction, and the wear resistance was investigated. The results show that the coating is firmly adhered to substrate, and contains a higher ratio of hard phase. Adding rare earth can obviously increase the wear resistance of coating. In the given conditions, the wear resistance of abrasion and erosion resistant alloy coating for twophase flow pump is much higher than that of ZGCr5Mo and Cr18Ni12Mo2Ti.

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