The effect of MnO{sub 2} and TiO{sub 2} doping on the desification and microstructural development of alumina
Conference
·
OSTI ID:99171
- Marmara Research Center, Gebze (Turkey)
The effect of MnO{sub 2} and TiO{sub 2} doping on the densification and microstructural development of {alpha}-Al{sub 2}O{sub 3} has been investigated over a wide sintering regime. A colloidal technique was applied for the mixing of dopants in order to achieve a uniform distribution and homogeneous microstructures. The sintered density, average grain size, and microhardness were evaluated along with the microstructural features of the sintered samples. Doping with MnO{sub 2} and MnO{sub 2}/TiO{sub 2} was found to increase the final sintered density and microhardness values. Excessive grain growth and second phase formation were observed in a-Al{sub 2}O{sub 3} - MnO{sub 2} compositions which were sintered above 1350{degrees}C.
- OSTI ID:
- 99171
- Report Number(s):
- CONF-940911--
- Country of Publication:
- United States
- Language:
- English
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