|
|
Material
|
Knoop Hardness
|
Melting Temperature
(Deg. C)
|
|
|
|
|
|
Diamond Like Carbon (DLC)
|
8000 - 8500
|
4027
|
|
BN (cubic)
|
4500 - 4600
|
3027
|
|
B4C
|
2900 - 3900
|
2350
|
|
SiC
|
2150 - 2950
|
2830
|
|
TiC
|
2500
|
3067
|
|
WC
|
2050 - 2150
|
2800
|
|
TiN
|
1800
|
3290
|
|
TiCxNy
|
~3000
|
~400
|
|
CrN
|
2000
|
1895
|
|
Si3N4
|
1600
|
1900
|
|
Al2O3
|
2000 - 2050
|
2054
|
|
TiB2
|
2850
|
3225
|
|
AlON
|
1970
|
2150
|
Comment: The above figures are for representative single layer hard coatings
Source: Vacuum Technology & Coating Magazine, July 2005 Issue
Keywords: ceramic coatings, hardness, melting temperature, spray coating, vapor deposition, comparison
|
