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Synthesis of Ultrahigh‐Temperature Si–B–C–N Ceramic from Polymeric Waste Gas
Author(s) -
Wang ZhiChang,
Gerstel Peter,
Kaiser Gerhard,
Bill Joachim,
Aldinger Fritz
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00511.x
Subject(s) - ceramic , materials science , amorphous solid , raw material , polymer , chemical engineering , argon , mineralogy , composite material , chemistry , organic chemistry , engineering
A “green” route to ultrahigh‐temperature Si–B–C–N ceramic from vacuum‐degassing waste gas of polyborosilazane {B[C 2 H 4 Si(CH 3 )NH] 3 } n (T2‐1) has been developed. After gas‐to‐gel transformation, an amorphous ceramic Si 5.3 B 1.0 C 19 N 3.7 was derived from the gel by dehydrocoupling and polymer‐to‐ceramic transformation. The ceramic started to form a nanostructure at 1700°C and resisted thermal degradation up to 2200°C in argon. This suggests that vacuum‐degassing waste gases of polymer precursors may be perfect raw materials for various advanced ceramics.