Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 437, Issue 2, Pages 379-387Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2006.07.126
Keywords
titanium nitride; superhard nanocomposites; nanocryatalline; composite; X-ray diffraction; compressibility; high pressure
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A high pressure diffraction study, from ambient to 50 GPa, has been carried out on nanocrystalline TiN/amorphous BN nanocomposite materials prepared by plasma chemical vapor deposition. The compressibilities of these materials were found not to be significantly different from TiN. A large amount of biaxial and isotropic strain was found to build up on pressurization which continued to exist after depressurization and annealing indicating a permanent deformation under high pressure. This permanent deformation is located in the grain boundaries and is reduced by the presence of amorphous BN. (c) 2006 Elsevier B.V. All rights reserved.
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