skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Yield strength and brittle-to-ductile transition of boron-nitride and gallium-nitride

Abstract

Boron-nitride and gallium-nitride with cubic (zincblende) structure are industrial materials with great potential. The only mechanical parameters that have been measured are the Vickers and Knoop hardnesses of cubic boron-nitride (c-BN), 49 GPa and 43 GPa, respectively. They are larger than the values for SiC. No hardness values of c-GaN have been published. This paper predicts the temperature dependence of the critical shear stress {tau}{sub c} and the brittle-to-ductile transition (BDT)-temperature of c-BN and c-GaN by use of the universal relation which was recently found for tetrahedrally bonded crystals.

Authors:
;  [1];  [2]
  1. Univ. of Tokyo (Japan). Inst. of Industrial Science
  2. Univ. Paris-Sud, Orsay (France). Institut de Sciences des Materiaux
Publication Date:
OSTI Identifier:
691314
Resource Type:
Journal Article
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 41; Journal Issue: 6; Other Information: PBD: 20 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; YIELD STRENGTH; BRITTLENESS; BORON NITRIDES; GALLIUM NITRIDES; BRITTLE-DUCTILE TRANSITIONS; TEMPERATURE DEPENDENCE; STRESSES

Citation Formats

Kamimura, Y., Kirchner, H.O.K., and Suzuki, T. Yield strength and brittle-to-ductile transition of boron-nitride and gallium-nitride. United States: N. p., 1999. Web. doi:10.1016/S1359-6462(99)00192-X.
Kamimura, Y., Kirchner, H.O.K., & Suzuki, T. Yield strength and brittle-to-ductile transition of boron-nitride and gallium-nitride. United States. doi:10.1016/S1359-6462(99)00192-X.
Kamimura, Y., Kirchner, H.O.K., and Suzuki, T. Fri . "Yield strength and brittle-to-ductile transition of boron-nitride and gallium-nitride". United States. doi:10.1016/S1359-6462(99)00192-X.
@article{osti_691314,
title = {Yield strength and brittle-to-ductile transition of boron-nitride and gallium-nitride},
author = {Kamimura, Y. and Kirchner, H.O.K. and Suzuki, T.},
abstractNote = {Boron-nitride and gallium-nitride with cubic (zincblende) structure are industrial materials with great potential. The only mechanical parameters that have been measured are the Vickers and Knoop hardnesses of cubic boron-nitride (c-BN), 49 GPa and 43 GPa, respectively. They are larger than the values for SiC. No hardness values of c-GaN have been published. This paper predicts the temperature dependence of the critical shear stress {tau}{sub c} and the brittle-to-ductile transition (BDT)-temperature of c-BN and c-GaN by use of the universal relation which was recently found for tetrahedrally bonded crystals.},
doi = {10.1016/S1359-6462(99)00192-X},
journal = {Scripta Materialia},
number = 6,
volume = 41,
place = {United States},
year = {1999},
month = {8}
}