Details

Autor(en) / Beteiligte

• JUNG, H. J.
• AHN, K. Y.
• CHOI, S. C.
• LEE, S. H.
• ALDINGER, F.

Titel

Low pressure sintering of sialon using different sintering additives

Ist Teil von

• Journal of the Ceramic Society of Japan, 2008-01, Vol.116 (1349), p.130-136

Erscheinungsjahr

2008

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The sintering behavior and the mechanical and oxidation properties of Sialon were investigated by varying the composition, amount, and cationic radii of sintering additives composed of AlN-Er(2)O(3)-M(2)O(3) (M=Y or Sc). The optimum additive composition for the pressureless sintering of Sialon was determined to be (0.6 AlN:0.4 [0.3 Er(2)O(3):0.7 M(2)O(3)]) and the optimum content was 10-15 mass%. The maximum relative densities of Sialon using AlN-Er(2)O(3)-Y(2)O(3) and AlN- Er(2)O(3)-Sc(2)O(3) additives (termed SAEY and SAES) were 94.4 and 97.9% at 0.1 MPa N(2), respectively. The pressureless sintered SAES sample showed fairly high strength (506 MPa) using the optimized additive composition. In both systems, the oxidation resistance was improved by decreasing the total amount of sintering additives.