PREPARATION AND PROPERTIES OF BULK CERAMICS VIA PYROLYSIS OF POLYCARBOSILANE WITH ACTIVE FILLERS   I. EVOLUTION PROCESS IN ACTIVE FILLER CONTROLLED PYROLYSIS

Acta Metallurgica Sinica (English Letters) ›› 1999, Vol. 12 ›› Issue (5): 1111-1115.

• Research paper • Previous Articles Next Articles

PREPARATION AND PROPERTIES OF BULK CERAMICS VIA PYROLYSIS OF POLYCARBOSILANE WITH ACTIVE FILLERS I. EVOLUTION PROCESS IN ACTIVE FILLER CONTROLLED PYROLYSIS

H.F.Hu, Z.H.Chen and C.J.Zhou Department of Material Engineering & Applied Chemistry, National University of Defense Technology, Changsha 410073,China

Received:1999-10-25 Revised:1999-10-25 Online:1999-10-25 Published:2009-10-10

Abstract

Abstract: The pyrolytic process of polycarbosilane (PCS) with active fillers (Ti, TiH 2, TiB 2, Cr, CrSi 2) is investigated. The ceramic yields with active fillers reach over 100% in N 2 atmosphere, and no shrinkage occurs when 12vol% Ti, or 4vol% Cr, or 3vol% CrSi 2 is added into PCS. XRD patterns indicate that metal carbides and nitrides form by reacting with gaseous evolution and N 2.

Key words: polycarbosilane, active filler, pyrolysis, ceramic yield, shrinkage

H.F.Hu, Z.H.Chen and C.J.Zhou Department of Material Engineering & Applied Chemistry, National University of Defense Technology, Changsha 410073,China. PREPARATION AND PROPERTIES OF BULK CERAMICS VIA PYROLYSIS OF POLYCARBOSILANE WITH ACTIVE FILLERS I. EVOLUTION PROCESS IN ACTIVE FILLER CONTROLLED PYROLYSIS[J]. Acta Metallurgica Sinica (English Letters), 1999, 12(5): 1111-1115.

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PREPARATION AND PROPERTIES OF BULK CERAMICS VIA PYROLYSIS OF POLYCARBOSILANE WITH ACTIVE FILLERS I. EVOLUTION PROCESS IN ACTIVE FILLER CONTROLLED PYROLYSIS

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