Abstract
The origin of the conical features on the surfaces of arc evaporated hard compound coatings was investigated. A simple metallographic technique was employed to show that these conical features are growth defects made of the coating material (TiN in our case) precipitated by macroparticles of the cathode material, and not the macroparticles themselves. The effect of bias voltage characteristics, such as the amplitude (for d.c. voltage), frequency and duty cycle (for pulsed voltage), on the evolution of defects was also investigated. An increase in the amplitude or duty cycle resulted in a decrease in the defect density, Ra and the surface area covered with the defects. A simple explanation for the phenomena observed is suggested.
| Original language | English |
|---|---|
| Pages (from-to) | 334-343 |
| Number of pages | 10 |
| Journal | Surface and Coatings Technology |
| Volume | 82 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Aug 1996 |
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Keywords
- Cathodic arc
- Growth defects
- Macroparticles
- Pulsed bias
ASJC Scopus subject areas
- Surfaces, Coatings and Films
- Condensed Matter Physics
- Surfaces and Interfaces
Cite this
Factors affecting growth defect formation in cathodic arc evaporated coatings. / Aharonov, Robert R.; Chhowalla, Manish; Dhar, Suranjeeta; Fontana, Raymond P.
In: Surface and Coatings Technology, Vol. 82, No. 3, 08.1996, p. 334-343.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Factors affecting growth defect formation in cathodic arc evaporated coatings
AU - Aharonov, Robert R.
AU - Chhowalla, Manish
AU - Dhar, Suranjeeta
AU - Fontana, Raymond P.
PY - 1996/8
Y1 - 1996/8
N2 - The origin of the conical features on the surfaces of arc evaporated hard compound coatings was investigated. A simple metallographic technique was employed to show that these conical features are growth defects made of the coating material (TiN in our case) precipitated by macroparticles of the cathode material, and not the macroparticles themselves. The effect of bias voltage characteristics, such as the amplitude (for d.c. voltage), frequency and duty cycle (for pulsed voltage), on the evolution of defects was also investigated. An increase in the amplitude or duty cycle resulted in a decrease in the defect density, Ra and the surface area covered with the defects. A simple explanation for the phenomena observed is suggested.
AB - The origin of the conical features on the surfaces of arc evaporated hard compound coatings was investigated. A simple metallographic technique was employed to show that these conical features are growth defects made of the coating material (TiN in our case) precipitated by macroparticles of the cathode material, and not the macroparticles themselves. The effect of bias voltage characteristics, such as the amplitude (for d.c. voltage), frequency and duty cycle (for pulsed voltage), on the evolution of defects was also investigated. An increase in the amplitude or duty cycle resulted in a decrease in the defect density, Ra and the surface area covered with the defects. A simple explanation for the phenomena observed is suggested.
KW - Cathodic arc
KW - Growth defects
KW - Macroparticles
KW - Pulsed bias
UR - http://www.scopus.com/inward/record.url?scp=0030212511&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030212511&partnerID=8YFLogxK
U2 - 10.1016/0257-8972(95)02773-4
DO - 10.1016/0257-8972(95)02773-4
M3 - Article
VL - 82
SP - 334
EP - 343
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
IS - 3
ER -