Journal of Inorganic Materials

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Effect of AIN-polytypoid on Elongated α-Sialon Formation

CHEN Wei-Wu; SUN Wei-Ying; YAN Dong-Sheng   

  1. State key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute ofCeramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:1999-01-28 Revised:1999-03-23 Published:2000-02-20 Online:2000-02-20

Abstract: The microstructural characteristic of (Y+Sm) α-Sialon with different amount of AINpolytypoid was studied by SEM and EDS. The formation mechanism of elongated α-Sialon inα -AIN-polytypoids dual-phases area was discussed. The results show that with increasing amountof AIN-polytypoid, more α-Sialon grains exhibit the enlongated morphology.

Key words: elongated α-Sialon, formation mechanism, AIN-polytypoid

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