Study on hte microstructure and properties of the coating produced y high velocity air arc spraying of titanium wires

摘要

In the paper,two kinds of titanium coatings were prepared yb the recently developed High Velocity Air Arc Spraying System,one is air atomized,the other is nitrogen atomized.Microstructure,Microstructre,phase compositions,adhesion strengths and micro-hardnesses of the coatings were investigated.Experiment results show that the coatings adhere well with the substrates,and the porosity is a little high.The coatings are composed of Ti.TiO and TiN.Average micro-hardness of air atomized coatings reaches 770 HV_0.2.