Title

Structural Ceramic Incorporating Boron Carbide Whiskers for the Strengthening Thereof

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.

Department(s)

Materials Science and Engineering

Patent Application Number

07/750,490

Patent Number

5162270

Document Type

Patent

Document Version

Citation

File Type

text

Language(s)

English


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