发明授权
- 专利标题： Thermal shock and erosion resistant tantalum carbide ceramic material
- 专利标题（中）： 耐冲击和耐腐蚀的碳化钽陶瓷材料
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申请号： US672695申请日： 1976-04-01
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公开(公告)号： US4067742A公开(公告)日： 1978-01-10
- 发明人: James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Leroy Honeycutt, III , Charles R. Manning, Jr.
- 申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Leroy Honeycutt, III , Charles R. Manning, Jr.
- 专利权人： Nasa,Honeycutt Iii Leroy,Manning Jr Charles R
- 当前专利权人： Nasa,Honeycutt Iii Leroy,Manning Jr Charles R
- 主分类号： C04B35/56
- IPC分类号： C04B35/56 ; C04B35/76 ; C04B35/52
摘要：
Ceramic tantalum carbide artifacts having high thermal shock and mechanical erosion resistance are provided by incorporating tungsten-rhenium and carbon particles in a tantalum carbide matrix. The mix is sintered by hot pressing to form the ceramic article which has a high fracture strength relative to its elastic modulus and thus has an improved thermal shock and mechanical erosion resistance. The tantalum carbide is preferable less than minus 100 mesh, the carbon particles are preferable less than minus 100 mesh, and the tungsten-rhenium particles are preferable elongate, having a length to thickness ratio of at least 2/1. Tungsten-rhenium wire pieces are suitable as well as graphite particles.
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