Abstract
Adhesion of diamond films on cemented carbide substrates is a critical issue due to its large thermal expansion mismatch. This large difference in thermal expansion results in the generation of very high stresses in the coating that may lead to delamination, cracking, or other deleterious effects. A method to increase the adherence of diamond coatings on cemented carbide substrates is reported, based on a substrate-modification process that creates a three-dimensional thermally and compositionally graded interface. Indentation tests on diamond coated tungsten carbide substrate showed that the adhesion of diamond films significantly improved with increasing the surface roughness of cemented carbides.
| Original language | English |
|---|---|
| Pages (from-to) | 187-191 |
| Number of pages | 5 |
| Journal | Surface and Coatings Technology |
| Volume | 100-101 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - Mar 1998 |
| Externally published | Yes |
Funding
The authors would like to acknowledge the financial support of the University of Florida, National Science Foundation, and the Engineering Particle Science and Technology Florida, NSF Grant no. 94-02989.
| Funders | Funder number |
|---|---|
| Engineering Particle Science and Technology Florida | |
| National Science | |
| National Science Foundation | 94-02989 |
| University of Florida |
Keywords
- Adhesion
- Chemical vapor deposition
- Diamond films
- Laser
- Tool