Effect of nano-CeO2 on microstructure properties of TiC/TiN+TiCN-reinforced composite coating

Bulletin of Materials Science

关键词: Rare-earth compounds;    surface modification;    laser cladding;    microstructure;    X-ray diffraction;    intermetallic compounds.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

TiC/TiN+TiCN-reinforced composite coatings were fabricated on Ti–6Al–4V alloy by laser cladding, which improved surface performance of the substrate. Nano-CeO2 was able to suppress crystallization and growth of crystals in the laser-cladded coating to a certain extent. With the addition of proper content of nano-CeO2, this coating exhibited fine microstructure. In this study, Al3Ti+TiC/TiN+nano-CeO2 laser-cladded coatings have been studied by means of X-ray diffraction and scanning electron microscope. X-ray diffraction results indicated that Al3Ti+TiC/TiN+nano-CeO2 laser-cladded coating consisted of Ti3Al, TiC, TiN, Ti2Al20Ce, TiC0.3N0.7, Ce(CN)3 and CeO2, this phase constituent was beneficial in increasing microhardness and wear resistance of Ti–6Al–6V alloy.

【 授权许可】

CC BY