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Title: How to estimate hardness of crystals on a pocket calculator

Abstract

A generalization of the semiempirical microscopic model of hardness is presented and applied to currently studied borides, carbides, and nitrides of heavy transition metals. The hardness of OsB, OsC, OsN, PtN, RuC, RuB{sub 2}, ReB{sub 2}, OsB{sub 2}, IrN{sub 2}, PtN{sub 2}, and OsN{sub 2} crystals in various structural phases is predicted. It is found that none of the transition metal crystals is superhard, i.e., with hardness greater than 40 GPa. The presented method provides materials researchers with a practical tool in the search for new hard materials.

Authors:
 [1]
  1. Institute of Physics v.v.i., Academy of Sciences of the Czech Republic, Cukrovarnicka 10, 162 53 Prague (Czech Republic)
Publication Date:
OSTI Identifier:
20960235
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 75; Journal Issue: 17; Other Information: DOI: 10.1103/PhysRevB.75.172108; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BORIDES; CALCULATORS; CARBIDES; CRYSTALS; HARDNESS; IRIDIUM COMPOUNDS; NITRIDES; OSMIUM COMPOUNDS; PLATINUM COMPOUNDS; PRESSURE RANGE GIGA PA; RHENIUM COMPOUNDS; RUTHENIUM COMPOUNDS; TRANSITION ELEMENTS

Citation Formats

Simunek, Antonin. How to estimate hardness of crystals on a pocket calculator. United States: N. p., 2007. Web. doi:10.1103/PHYSREVB.75.172108.
Simunek, Antonin. How to estimate hardness of crystals on a pocket calculator. United States. doi:10.1103/PHYSREVB.75.172108.
Simunek, Antonin. Tue . "How to estimate hardness of crystals on a pocket calculator". United States. doi:10.1103/PHYSREVB.75.172108.
@article{osti_20960235,
title = {How to estimate hardness of crystals on a pocket calculator},
author = {Simunek, Antonin},
abstractNote = {A generalization of the semiempirical microscopic model of hardness is presented and applied to currently studied borides, carbides, and nitrides of heavy transition metals. The hardness of OsB, OsC, OsN, PtN, RuC, RuB{sub 2}, ReB{sub 2}, OsB{sub 2}, IrN{sub 2}, PtN{sub 2}, and OsN{sub 2} crystals in various structural phases is predicted. It is found that none of the transition metal crystals is superhard, i.e., with hardness greater than 40 GPa. The presented method provides materials researchers with a practical tool in the search for new hard materials.},
doi = {10.1103/PHYSREVB.75.172108},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 17,
volume = 75,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}
}
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