期刊论文

Liu, Xiu-Bo

英文

OPTICS AND LASER TECHNOLOGY

0030-3992

2019

109

99-109

10.1016/j.optlastec.2018.07.061

The XRD patterns of the composite coating N1 (NiCr-40Al-10Si, wt.%) and the composite coating N2 (NiCr-40Al-20Si, wt.%) were shown in Fig. 1. It can be seen that the main phases of the coatings are Ti5Si3, NiTi, Al3Ni2 and Al3Ti. Some Ti5Si4 and Cr5Si3 can be also detected. Because the fast cooling during laser in-situ synthesizing, a few pores but no cracks can be observed (see Fig. 2(a)). Fig. 2(b) displays the magnified micrograph of the bonding zone (BZ) and the heat affected-zone (HAZ) of

本校为第一且通讯机构

To enhance the wear resistance and elevated temperature antioxidation of Ti6Al4V alloy simultaneously, Ni-20Cr powders with the addition of Al and Si were deposited successfully on its face by laser in-situ synthesizing. The microstructure, micro-hardness, wear, elevated temperature antioxidation of composite coatings were researched. The results show that the composite coatings are mainly composed of Ti5Si3/Al3Ni2 as reinforcing particles and Al3Ti/NiTi as intermetallic matrix, and had a metallurgical bonding with substrate. The average micro-hardness of composite coatings are 2.5–3 tim...