Invention Grant
- Patent Title: In-situ formation of reinforcement phases in ultra high temperature ceramic composites
- Patent Title (中): 在超高温陶瓷复合材料中原位形成强化相
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Application No.: US13215206Application Date: 2011-08-22
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Publication No.: US08409491B1Publication Date: 2013-04-02
- Inventor: Margaret M Stackpoole , Matthew J Gasch , Michael W Olson , Ian W. Hamby , Sylvia M Johnson
- Applicant: Margaret M Stackpoole , Matthew J Gasch , Michael W Olson , Ian W. Hamby , Sylvia M Johnson
- Applicant Address: US DC Washington
- Assignee: The United States of America as Represented by the Administrator of the National Aeronautics & Space Administration (NASA)
- Current Assignee: The United States of America as Represented by the Administrator of the National Aeronautics & Space Administration (NASA)
- Current Assignee Address: US DC Washington
- Agent John F. Schipper; Robert M. Padilla; Christopher J. Menke
- Main IPC: B28B1/00
- IPC: B28B1/00 ; B28B3/00 ; B28B5/00 ; C04B33/32 ; C04B35/00 ; B32B9/00 ; B32B19/00
Abstract:
A tough ultra-high temperature ceramic (UHTC) composite comprises grains of UHTC matrix material, such as HfB2, ZrB2 or other metal boride, carbide, nitride, etc., surrounded by a uniform distribution of acicular high aspect ratio reinforcement ceramic rods or whiskers, such as of SiC, is formed from uniformly mixing a powder of the UHTC material and a pre-ceramic polymer selected to form the desired reinforcement species, then thermally consolidating the mixture by hot pressing. The acicular reinforcement rods may make up from 5 to 30 vol % of the resulting microstructure.
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