Microstructural Development of Sintered β-Si3N4 Powder

Abstract

Abstract: Dense silicon nitride ceramics were obtained from β-Si₃N₄ powder, the material wascomposed of small rodlike grains and equiaxed grains, the small rodlike grains dispersed uniformlyin the matrix. Sintering process consisted of three stages: rearrangement, grain shape regulate,grain growth. The microstructure was sensitive to the time at the beginning of sintering, andshowed stable when holding time was longer than 2h. High temperature increased the aspect ratioof rodlike grains. More additives increased the diameter of both equiaxed and rodlike grains.

Key words: β-Si₃N₄, microstructrue, sinter

CLC Number:

TQ163

XU Xin,HUANG Li-Ping,FU Xi-Ren. Microstructural Development of Sintered β-Si₃N₄ Powder[J]. Journal of Inorganic Materials.

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Microstructural Development of Sintered β-Si₃N₄ Powder

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