Multi-Step Sintering Method Study of HP Y-SiAlON Ceramics

Jiu Jun Xu; Ying Chun Shan; Jiang Tao Li; Qin Ji Song

doi:10.4028/www.scientific.net/KEM.368-372.908

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 368-372Multi-Step Sintering Method Study of HP Y-SiAlON...

Multi-Step Sintering Method Study of HP Y-SiAlON Ceramics

Abstract:

Multi-step hot pressing sintering was adopted to prepare Y-SiAlON (Y0.4Si9.6Al2.4O1.2N14.8) at 1950°C for 60 min under 25 Mpa in nitrogen atmosphere, and the microstructure was studied. The phase assemblages, microstructures and densification of the sintered samples were discussed in detail. In order to contrast to multi-step sintering, one step sintering also was adopted. The results reveal that single-phase α-SiAlON with elongated grain pattern is formed in the multi-step sintering specimens, because of holding at low temperature in multi-step sintering is helpful to reduce the kinetics of crystal growth, the mount of elongated grain in multi-step sintering samples is more than that of in one step sintering ones.

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Periodical:

Key Engineering Materials (Volumes 368-372)

Pages:

908-909

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.368-372.908

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Online since:

February 2008

Authors:

Jiu Jun Xu, Ying Chun Shan, Jiang Tao Li, Qin Ji Song

Keywords:

Hot-Pressing, Multi-Step Sintering, ß-SiAlON, Temperature

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