PROCESSIBLE PRECURSOR FOR BORON-NITRIDE COATINGS AND MATRICES

被引：42

作者：

PACIOREK, KJL ^{[1
]}

MASUDA, SR ^{[1
]}

KRATZER, RH ^{[1
]}

SCHMIDT, WR ^{[1
]}

机构：

[1] RENSSELAER POLYTECH INST,DEPT MAT ENGN,TROY,NY 12180

来源：

CHEMISTRY OF MATERIALS | 1991年 / 3卷 / 01期

关键词：

D O I：

10.1021/cm00013a022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An organic solvent soluble borazinyl oligomer, 1, was formed by a reaction of B,B',B''-trichloroborazine with HN(SiMe3)2 at low temperatures in nonpolar solvents. High-purity BN powders, characterized by IR and X-ray diffraction spectra, were produced by bulk pyrolysis of 1 to 1000-degrees-C in NH3. Thin approximately 0.02-mu-m BN coatings were successfully applied to Al2O3/ZrO2 and carbon fibers by dip coating fiber bundles in 5-10% (w/w) solutions of 1 followed by pyrolysis of the coated fibers in an ammonia atmosphere. The BN-coated carbon fibers were subjected to oxidation in air at 800-degrees-C; scanning electron microscopy of the coated fibers and the BN sheaths remaining after oxidation confirmed the formation of BN coatings.

引用

页码：88 / 91

页数：4

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