학술논문
Polymeric precursors to refractory metal borides.
Document Type
Article
Author
Source
Subject
*POLYMERIC composites
*POLYMERS
*CHEMICAL reduction
*CHEMICAL reactions
*ALKOXIDES
*ORGANOMETALLIC compounds
*MATERIALS science
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Language
ISSN
0022-2461
Abstract
Polymeric precursors to zirconium and hafnium diboride are described. Initial studies concentrated on carbothermal/borothermal reduction of metal alkoxides; however, improved results were obtained from oxide free-precursors prepared from the metal borohydride and borazine. The metal borides are obtained in good chemical and ceramic yield upon pyrolysis, and the polymeric precursors obtained through the reaction of borazine with the metal borohydride exhibit viscosities amenable to use as preceramic binders in powder processing. [ABSTRACT FROM AUTHOR]