Effects of Oxygen Fuel Rate on Microstructure and Wear Properties of Detonation Sprayed Iron-Based Amorphous Coatings
Lu Xie, Yue-Ming Wang, Xiang Xiong, Zhao-Ke Chen, Ya-Lei Wang
The Fe-based (iron-based) amorphous coatings were prepared by detonation spray at various oxygen fuel rates. The microstructure and wear properties were examined. The amorphous phase contents of coatings were calculated to be 89.73%, 86.23% and 81.46%, respectively, which were higher than those fabricated by other thermal spray techniques. The porosity was tested to be 2.1%, 1.4% and 0.8%, respectively. The wear resistance of Fe-based amorphous coatings was four times better than the stainless steel substrate. The oxygen fuel rate of 1.2 m3/h∼1.0 m3/h was proved to be the optimal parameter of fabricating Fe-based amorphous coating. The effects of oxygen fuel rate were discussed.
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