Abstract
In this paper, a 5 kW cw CO2 laser was used to fabricate a new high-temperature self-lubricating wear-resistant composite coating on austenite stainless steel 1Cr18Ni9Ti. Microstructure of the coatings was characterized by OM, SEM, XRD and EDS as functions of laser processing parameters. The hybrid composite coating consists of rapidly solidified wear-resistant primary Cr7C3 and eutectic Cr23C6 carbides, high-temperature self-lubricating CaAgF4 or CaF2 particles and the oxidation-resistant austenitic Ni-Cr matrix. Microstructure and hardness within the whole laser clad composite coating is homogeneous and the bonding to the substrate is purely metallurgical. Microhardness of the composite coating is 700-1000HV on average. The hybrid composite coatings fabricated by laser cladding are expected to have good high-temperature tribological properties.
| Original language | English |
|---|---|
| Pages (from-to) | 423-427 |
| Number of pages | 5 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3862 |
| DOIs | |
| Publication status | Published - 1999 |
| Externally published | Yes |
| Event | Proceedings of the 1999 International Conference on Industrial Lasers (IL '99) - Wuhan, China Duration: Oct 22 1999 → Oct 27 1999 |
ASJC Scopus Subject Areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering