Abstract
Conventional hard metal coatings on WC/Co metalloceramics are treated at elevated temperatures by cobalt diffusion. That could prevent applying suitable barrier sublayers. The paper presents results on the possibility tungsten carbide (WC) and carbonitrides (WC xNy) CVD layers to be used as a barrier against Co diffusion. The coatings were prepared using two CVD methods: direct growing of WC or WC xNy and carborization/carbonitridization of W films. The level of diffused Co was investigated by X-ray microprobe technics, Auger electron spectrometry and direct layer by layer spectral analysis in the hollow cathode glow discharge method. Results show that WC and WC xNy coatings are prospective for preventing diffusion interaction between the substrate and the functional coatings.
| Original language | English |
|---|---|
| Pages (from-to) | 351-356 |
| Number of pages | 6 |
| Journal | Materials Letters |
| Volume | 35 |
| Issue number | 5-6 |
| DOIs | |
| Publication status | Published - 1998 Jun |
| Externally published | Yes |
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Keywords
- Diffusion barrier
- Metalloceramics
- Tungsten carbides
- Tungsten carbonitrides
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
CVD-WC and WC xNy diffusion barrier coatings on WC/Co metalloceramics. / Gogova, D.; Gesheva, K.; Veneva, A.
In: Materials Letters, Vol. 35, No. 5-6, 06.1998, p. 351-356.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - CVD-WC and WC xNy diffusion barrier coatings on WC/Co metalloceramics
AU - Gogova, D.
AU - Gesheva, K.
AU - Veneva, A.
PY - 1998/6
Y1 - 1998/6
N2 - Conventional hard metal coatings on WC/Co metalloceramics are treated at elevated temperatures by cobalt diffusion. That could prevent applying suitable barrier sublayers. The paper presents results on the possibility tungsten carbide (WC) and carbonitrides (WC xNy) CVD layers to be used as a barrier against Co diffusion. The coatings were prepared using two CVD methods: direct growing of WC or WC xNy and carborization/carbonitridization of W films. The level of diffused Co was investigated by X-ray microprobe technics, Auger electron spectrometry and direct layer by layer spectral analysis in the hollow cathode glow discharge method. Results show that WC and WC xNy coatings are prospective for preventing diffusion interaction between the substrate and the functional coatings.
AB - Conventional hard metal coatings on WC/Co metalloceramics are treated at elevated temperatures by cobalt diffusion. That could prevent applying suitable barrier sublayers. The paper presents results on the possibility tungsten carbide (WC) and carbonitrides (WC xNy) CVD layers to be used as a barrier against Co diffusion. The coatings were prepared using two CVD methods: direct growing of WC or WC xNy and carborization/carbonitridization of W films. The level of diffused Co was investigated by X-ray microprobe technics, Auger electron spectrometry and direct layer by layer spectral analysis in the hollow cathode glow discharge method. Results show that WC and WC xNy coatings are prospective for preventing diffusion interaction between the substrate and the functional coatings.
KW - Diffusion barrier
KW - Metalloceramics
KW - Tungsten carbides
KW - Tungsten carbonitrides
UR - http://www.scopus.com/inward/record.url?scp=0032095243&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032095243&partnerID=8YFLogxK
U2 - 10.1016/S0167-577X(97)00267-X
DO - 10.1016/S0167-577X(97)00267-X
M3 - Article
AN - SCOPUS:0032095243
VL - 35
SP - 351
EP - 356
JO - Materials Letters
JF - Materials Letters
SN - 0167-577X
IS - 5-6
ER -