Abstract
THT07-135 high temperature wear machinery was used to analyse tribological properties of high velocity arc sprayed FeAl, Fe-Al/Cr3C2, FeAlCr/Ni wrapped Cr3C2 composite coatings. The wear scar morphologies and compositions of coatings were analyzed by SEM, TEM and XRD methods. Results show that FeAlCr/Ni wrapped Cr3C2 composite coatings have typically layer shaped structure and relatively high bonding strength and hardness. The wear resistance of coatings decreases in the range from room temperature to 250°C, and it changes little in the range from 250°C to 550°C, then wear resistance of coatings rises again after 550°C. Shell tribology behavior is mainly the high temperature wear mechanism of coatings. The addition of Cr3C2 can improve the wear resistance of coatings highly; the addition of Ni can also relatively enhance bonding strength and wear properties of coatings.
Original language | English |
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Pages (from-to) | 1671-1676 |
Number of pages | 6 |
Journal | Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals |
Volume | 14 |
Issue number | 10 |
State | Published - Oct 2004 |
Externally published | Yes |
Keywords
- FeAlCr/Ni wrapped CrC composite coating
- High velocity arc spray
- Tribological characteristic