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PACE Technologies Metallographic Preparation CLASS Chart icon

CLASS 10 - Engineered Ceramics
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.

CLASS 10 icon
CLASS 10 Engineered Ceramics
General Ceramics Engineered Ceramics
Alumina or Sapphire
Metallographic microstructure of Alumina ceramics

Zirconia
Metallographic microstructure of partially stabilized zirconia

ALON
Metallographic microstructure of ALON or alumina / aluminum nitride


Silicon Nitride
Metallographic microstrucuture of Silcon nitride

Mullite/ Cordierite
Metallographic microstructure of Mullite

SiSiC
Metallographic microstructure of SiSiC engineered ceramic

Steatite
Metallographic microstructure of Steatite


SIALON
Metallographic microstructure SIALON

Beryllium Oxide
Metallographic microstructure of berillium oxide


 

Ceramic Matrix Composites (CMC's)
SiC fiber - Silicon Nitride matrix
SiC fibers in Si3N4 matrix

Hafnium diboride in a Boron nitride Matrix
HfB2 fibers in BN matrix

SiC particles - Silicon Nitride matrix
SiC particles in Si3N4 matrix

SiC particles - Zirconium Diboride matrix
Metallographic micrograph of SiC Zirconium Diboride ceramic matric composite



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