Abstract
Ceramic composites, and in particular structural ceramic composites, have enhanced strength, toughness and abrasion resistance due to the presence of up to about 40 volume percent of relatively large boron carbide whiskers. Although whiskers of various sizes were studied, those of particular interest are whiskers having an average diameter greater than about 3 micrometers, and particularly about 5 to about 8 micrometers, with an average aspect ratio of about 50. Due to the larger size, which had been predicted to be detrimental, there is less respiratory health risk when using these whiskers in the manufacturing of thse improved ceramic composites. Since boron carbide whiskers have many properties superior to silicon carbide whiskers, the most common strengthening agent, the findings should lead to several improved ceramic composites.
Recommended Citation
P. D. Ownby and J. Liu, "Structural Ceramic Incorporating Boron Carbide Whiskers for the Strengthening Thereof," U.S. Patents, Nov 1992.
Department(s)
Materials Science and Engineering
Patent Application Number
US07/750,490
Patent Number
US5162270A
Document Type
Patent
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 1992 Third Millennium Technologies, Inc., All rights reserved.
Publication Date
01 Nov 1992
