Abstract
Laser surface alloying with gaseous nitrogen, TiN powders, carbon powders and TiC powders respectively is employed to improve the tribological properties of the γ-TiAl intermetallic alloy Ti-48Al-2Cr-2Nb. Smooth and crack-free in-situ composite coatings reinforced by rapidly solidified dentritic TiN and TiC, respectively, were made on substrates of the intermetallic alloy. The wear resistance of the laser-surface-alloyed composite coatings was evaluated under dry sliding and high speed two-body abrasive wear conditions. The results show that the microhardness and the wear resistance of the γ-TiAl intermetallic alloy are significantly improved after laser surface alloying treatment.
| Original language | English |
|---|---|
| Pages (from-to) | 330-331 |
| Number of pages | 2 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 29 |
| Issue number | 5 |
| Publication status | Published - Oct 2000 |
| Externally published | Yes |
ASJC Scopus Subject Areas
- Electronic, Optical and Magnetic Materials
- Metals and Alloys
- Electrical and Electronic Engineering
- Materials Chemistry
Keywords
- γ-TiAl intermetallic alloy
- Laser surface alloying
- Wear resistance