CLASS 10 - Engineered Ceramics
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Examples include silicon nitride, zirconia, SiSiC, silicon carbide, boron carbide, alumina, mullite, and ceramic matrix composites (CMC’s). Description: Engineered ceramics have found increasing applications for high temperature, corrosion resistance, low wearability and a number of other applications. An example of a Class 10 specimen preparation technique is for aluminum oxynitride (AlON) which is a ceramic composed of aluminum, oxygen and nitrogen. It is a transparent ceramic that is harder than glass. Preparation Challenge: AlON is very hard therefore specimen preparation procedures generally require a CMP (chemical mechanical polishing) component to remove induced microstructural damage. When examining the surface, it is recommended that a sputter coating be used to increase surface reflectivity. |
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| CLASS 10 Engineered Ceramics |
| General Ceramics | Engineered Ceramics |
|---|---|
Alumina or Sapphire |
Zirconia |
ALON |
Silicon Nitride |
Mullite/
Cordierite |
SiSiC |
Steatite |
SIALON |
Beryllium Oxide |
| Ceramic Matrix Composites (CMC's) |
|---|
SiC fiber - Silicon Nitride matrix  |
Hafnium diboride in a Boron nitride Matrix |
SiC particles - Silicon Nitride matrix  |
SiC particles - Zirconium Diboride matrix
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