Abstract
A wear-resistant Cr-alloyed Ni-Si silicides intermetallic coating was fabricated on substrate of 0.20% C carbon steel by laser cladding with Ni-22.6%Si-5.6%Cr (wt.%) elemental powders. Wear resistance of the intermetallic composite coating was evaluated under dry sliding wear test conditions. The laser clad chromium-alloyed nickel silicide coating has a rapidly solidified microstructure consisting of the Ni2Si primary cellular-dendrites and minor amount of interdendritic Ni2Si/NiSi eutectics. The intermetallic coating has good wear resistance under dry sliding wear test conditions due to the high hardness, refined microstructure and strong intermetallic atomic bonds.
| Original language | English |
|---|---|
| Pages (from-to) | 2914-2918 |
| Number of pages | 5 |
| Journal | Materials Letters |
| Volume | 57 |
| Issue number | 19 |
| DOIs | |
| State | Published - Jun 2003 |
| Externally published | Yes |
Keywords
- Coatings
- Laser cladding
- Microstructure
- Nickel silicides
- Wear resistance
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