EFFECT OF BORIC-ACID ADDITION IN COLLOIDAL SOL-GEL DERIVED SIC PRECURSORS

被引:22
作者
JULBE, A [1 ]
LARBOT, A [1 ]
GUIZARD, C [1 ]
COT, L [1 ]
CHARPIN, J [1 ]
BERGEZ, P [1 ]
机构
[1] CENS,DEPT PHYSICOCHIM MAT,F-91191 GIF SUR YVETTE,FRANCE
关键词
D O I
10.1016/0025-5408(90)90026-X
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Sol-gel derived precursors are known to be suitable for the formation of submicron and homogeneous SiC powders. From colloidal silica and saccharose, we obtained SiC powders whose grain size is 100nm in diameter and which are easily sinterable with boron containing additives. Furthermore, we have pointed out that boric acid added in the original colloidal sols permits to increase considerably the carbothermal reduction yield and the powder crystallinity. © 1990.
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页码:601 / 609
页数:9
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