Phosphorus-containing derivatives of decaboranes(14) as precursors of boron-containing materials. Technical report
Ceramic materials whose properties are attractive for high-technology applications often fail to realize their full potential of usefulness due to an inability to be fabricated into complex, durable shapes. One such class of materials is that of the boron-containing ceramics, e.g., boron carbide, boron nitride, boron phosphides, aluminum boride, and boron silicides. The authors report the results of an effort to extend the use of preceramic polymers to boron-containing materials. The motivation for this work was to utilize processable materials which give, in general, boron carbide as the major ceramic phase upon pyrolysis. A route to soluble boron-containing polymers has been developed. The synthesis and characterization of phosphorus-containing monomeric and polymeric derivatives of decaborane (B/sub 10/H/sub 14/) are given. Preparation and characterization of boron-containing ceramic materials from these molecular and macromolecular species are discussed. Success was achieved in the areas of ceramic-fiber and monolith production and in the area of binder applications for composites of advanced ceramic materials.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Chemistry
- OSTI ID:
- 6670473
- Report Number(s):
- AD-A-197415/3/XAB; TR-26
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM BORIDES
FABRICATION
BORANES
PROCESSING
BORON CARBIDES
BORON NITRIDES
BORON PHOSPHIDES
BORON SILICIDES
COMPOSITE MATERIALS
BINDERS
PHOSPHORUS COMPOUNDS
BORIDES
MOLECULES
POLYMERS
PROGRESS REPORT
PYROLYSIS
SHAPE
SOLUBILITY
ALUMINIUM COMPOUNDS
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHEMICAL REACTIONS
DECOMPOSITION
DOCUMENT TYPES
MATERIALS
NITRIDES
NITROGEN COMPOUNDS
PHOSPHIDES
PNICTIDES
SILICIDES
SILICON COMPOUNDS
THERMOCHEMICAL PROCESSES
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360601 - Other Materials- Preparation & Manufacture