Title

Normal-pressure Hot-pressing of Α-alumina-diamond Composites

Abstract

α-Alumina-diamond composites have been developed by normal hot-pressing procedures using a conventional pressure of 32 MPa and 1250°C. Heretofore this type of composite has required a pressure of 6 GPa (60 kbar) to prevent the transformation of diamond to graphite. the mechanical properties, density, and thermal expansion coefficient of these composites have been characterized. the fracture toughness (KIc) of alumina shows a considerable increase with the addition of diamond particles. Diamond additions tend to decrease the thermal expansion coefficient of these composites. the composite properties are dependent on the volume fraction of diamond particles.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Diamond; Alumina; Composites; Thermal Expansion; Fracture Toughness

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1991 Wiley-Blackwell, All rights reserved.


Share

 
COinS