Development and characterization of nanophase Si3N4-based ceramics

被引：1
|
作者：
Bellosi, A [1 ]
Monteverde, F [1 ]
Botti, S [1 ]
Martelli, S [1 ]
机构：
[1] CR FRASCATI, DIV INN FIS, ENEA, I-00044 FRASCATI, ITALY
来源：
SYNTHESIS AND PROPERTIES OF MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, PTS 1 AND 2 - ISMANAM-96 | 1997年 / 235-2卷
关键词：
silicon nitride; silicon nitride silicon carbide nanocomposites; ultrafine powders; laser synthesis; nanostructure; powder processing; densification; hot pressing; microstructure; mechanical properties;
D O I：
10.4028/www.scientific.net/MSF.235-238.255
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fine and dense silicon nitride-based ceramics were produced and characterized. Substantial increase in sinterability and refinement of the microstructure (mean grain size < 0.2 mu m) were reached by the addition of ultrafine Si/C/N powders to commercial Si3N4 submicronic powder. Moreover this ultrafine powder was densified. The effects of different amounts of sintering aids (La2O3 + Y2O3) and of powder treatment methods on microstructure and mechanical properties were evaluated and compared.
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页码：255 / 260
页数：6
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