A new design of tungsten carbide tools with diamond coatings
Journal Article
·
· Journal of Materials Research
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7916 (United States)
- Metals and Ceramics Division, Oak Ridge, National Laboratory, Oak Ridge, Tennessee 37831 (United States)
We have designed tungsten carbide tools with a new binder, which makes them suitable for advanced diamond tool coatings. The new tool substrates, made of tungsten carbide and nickel aluminide as binder phase, are produced by sintering and hot isostatic pressing, and also by combustion synthesis. The high temperature strength of nickel aluminide is key to superior tool performance at elevated temperatures. More importantly, nickel aluminides reduce the formation of graphite and promote diamond growth during chemical vapor deposition. Diamond films are deposited on the new tool substrates to investigate the nucleation density, adhesion, and wear resistance. The diamond coatings are characterized by scanning electron microscopy and Raman spectroscopy. The graphitizing tendency due to cobalt in the tungsten carbide tools was found to be a limitation to improve adhesion of diamond films. The new tool substrates with nickel aluminide binder have been found to exhibit good adhesion and wear resistance. The implications of these results in advanced cutting tools are discussed. {copyright} {ital 1996 Materials Research Society.}
- OSTI ID:
- 385542
- Journal Information:
- Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 9 Vol. 11; ISSN JMREEE; ISSN 0884-2914
- Country of Publication:
- United States
- Language:
- English
Similar Records
Improvement of adhesion of diamond coatings to WC(Co) tool substrates
Multilayer diamond coated WC tools
Tungsten carbide coatings on steel
Conference
·
Tue Aug 01 00:00:00 EDT 1995
·
OSTI ID:82564
Multilayer diamond coated WC tools
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:230110
Tungsten carbide coatings on steel
Conference
·
Tue Dec 31 23:00:00 EST 1974
·
OSTI ID:4073524