Preceramic polymers to hafnium carbide and hafnium nitride ceramic fibers and matrices
OwnerEdward J. A. Pope, Kenneth M. Kratschinventors
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Abstract
Hafnium containing preceramic polymer is made through the reaction of hafnium halide compound with any of the following compounds: ethylene diamine, dimethyl ethylene diamine, piperazine, allylamine and or polyethylene-imine.
Claims6
A hafnium carbide containing ceramic fiber derived from a preceramic polymer.
A hafnium nitride containing ceramic fiber derived from a preceramic polymer.
A hafnium containing preceramic polymer derived from the reaction of a hafnium containing halide compound and an amine containing organic compound.
The preparation of a hafnium containing preceramic polymer through the reaction of hafnium halide compound with any of the following compounds;
- ethylene diamine, dimethyl ethylene diamine, piperazine, allylamine, or polyethylene-imine.
The production of a hafnium carbide containing ceramic fiber comprising the steps of:
- a. melting a hafnium containing preceramic polymer;
- b. extruding said polymer through an orifice to form fiber;
- c. cross-linking said fiber;
- and
- d. heating said cross-linked fiber under controlled atmospheric conditions at a temperature greater than 600 degrees centigrade to obtain a hafnium carbide containing ceramic fiber.
The production of a hafnium nitride containing ceramic fiber comprising the steps of:
- a. melting a hafnium containing preceramic polymer;
- b. extruding said polymer through an orifice to form a fiber.
- c. cross-linking said fiber;
- and
- d. heating said cross-linked fiber under in an ammonia containing atmosphere at a temperature greater than 600 degrees centigrade to obtain a hafnium nitride containing ceramic fiber.
Dependencies are inferred from the claim text.