J. Mater. Sci. Technol. ›› 1992, Vol. 8 ›› Issue (6): 397-400.

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Characterization of{10(?)1}*and{10(?)0}*α-Si_3N_4 Whiskers by HREM

ZHOU Yanchun ZHOU Jing CHANG Xin XIA Fei SHI Changxu ** Institute of Metal Research,Academia Sinica,Shenyang,110015,China+ To whom correspondence should be addressed   

  1. InstituteofMetalResearch,AcademiaSinica,Shenyang,110015,China;InstituteofMetalResearch,AcademiaSinica,Shenyang,110015,China;InstituteofMetalResearch,AcademiaSinica,Shenyang,110015,China;InstituteofMetalResearch,AcademiaSinica,Shenyang,110015,China;InstituteofMetalResearch,AcademiaSinica,Shenyang,110015,China
  • 收稿日期:1992-11-28 修回日期:1992-11-28 出版日期:1992-11-28 发布日期:2009-10-10

Characterization of{101}*and{100}*α-Si_3N_4 Whiskers by HREM

ZHOU Yanchun ZHOU Jing CHANG Xin XIA Fei SHI Changxu ** Institute of Metal Research,Academia Sinica,Shenyang,110015,China+ To whom correspondence should be addressed   

  • Received:1992-11-28 Revised:1992-11-28 Online:1992-11-28 Published:2009-10-10

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摘要： <正> The microstructure of both {10(?)1} and{10(?)0} (directions perpendicular to the {10(?)1}and {10(?)0} planes) α-Si_3N_4 whiskers were investi-gated by high resolution electron microscopy(HREM).On one side of the {10(?)1}α-Si_3N_4 whiskers many planar defects were ob-served,two kinds of micrograins on one side of the{10(?)0} whiskers were found.In one type,sepa-rated α-Si_3N_4 (28 H) micrograins had the sameorientation with respect to the matrix whisker;inthe other type,connected polymicrograins consistedof both α-and β-Si_3N_4 (14H).

Abstract: The microstructure of both {10(?)1} and {10(?)0} (directions perpendicular to the {10(?)1} and {10(?)0} planes) α-Si_3N_4 whiskers were investi- gated by high resolution electron microscopy (HREM).On one side of the {10(?)1} α-Si_3N_4 whiskers many planar defects were ob- served,two kinds of micrograins on one side of the {10(?)0} whiskers were found.In one type,sepa- rated α-Si_3N_4 (28 H) micrograins had the same orientation with respect to the matrix whisker;in the other type,connected polymicrograins consisted of both α-and β-Si_3N_4 (14H).

Key words: α-Si_3N_4 whisker, microstructure, HREM