United Technologies Corporation

Timothy Coons

Steven Lawrence Suib

Michael A Kmetz

Douglas Michael Berczik

Justin Reutenauer

Kirk C Newton

Steve Lawrence Suib

Disclosed is a method of fabricating a preceramic polymer for making a ceramic material including a metal boride. The method includes providing a starting preceramic polymer that includes a silicon-containing backbone chain and first and second reactive side groups extending off of the silicon-containing backbone chain, reacting a boron-containing material with the first reactive side group to bond a boron moiety to the silicon-containing backbone chain, and reacting a metal-containing material with the second reactive side group to bond a metal moiety to the silicon-containing backbone chain such that the preceramic polymer includes the boron moiety and the metal moiety extending as side groups off of the silicon-containing backbone chain. Also disclosed is a preceramic polymer composition and a metal-boride-containing ceramic article fabricated from the preceramic polymer.

Preceramic polymer for ceramic including metal boride

A method for a fabricating a ceramic material includes providing a mixture of a reactive metallic filler material with a preceramic polysilazane material. The preceramic polysilazane material is then polymerized to form a green body. The green body is then thermally treated in an environment that is substantially free of oxygen to convert the polymerized preceramic polysilazane material into a ceramic material that includes at least one nitride phase that is a reaction product of the reactive metallic filler material and a preceramic polysilazane material.

Method for fabricating ceramic material

A ceramic composite article includes ceramic carbide fibers and a ceramic matrix in which the ceramic carbide fibers are embedded. The ceramic matrix includes a laminar structure with at least one layer of a first ceramic material and at least one layer of a second, different ceramic material.

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Narragansett, RI, United States of America

Timothy Coons