Landolt-Börnstein - Group VIII Advanced Materials and Technologies

13.5 Properties of diamond and cubic boron nitride

Abstract

This chapter discusses the properties of diamond, cubic boron nitride (CBN) and their polycrystalline and multi-phase products. Three organizations, associated with standards which apply to diamond and CBN products, in Europe, America and Japan, are discussed. The properties discussed are general properties, namely, chemical composition, classification, crystal structure, density, graphitization and resistance to chemical attack of diamond, and mechanical properties, namely, scratch hardness, indentation hardness, abrasion resistance, friction, elastic moduli, bulk modulus, Poisson's ratio, Young's modulus, anistropy and strength of diamond. Thermal properties, optical and electrical properties of both diamond and cubic boron nitride (CBN) are also tabulated. Thermodynamic properties including heat of formation, entropy, lattice energy, cohesive energy and surface energy data of CBN are provided. Because of the various techniques available for the production of chemical vapour deposition (CVD) diamond and diamond like carbon (DLC), properties can be varied to suit specific applications. Optical grades exhibit the highest optical transparency, while mechanical grades are optically opaque but possess high mechanical strength. Thermal properties, optical and electrical properties of DLC films and CVD diamond are tabulated. There are a considerable number of commercial polycrystalline diamond (PCD) products available. Not all manufacturers have disclosed the properties of such materials. Physical properties of some PCD products and CBN products are provided. The measurement of properties of diamond and CBN multi-phase products, e.g. density and matrices/matrix hardness, is confined to quality control aspects of manufacture.

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Title
13.5 Properties of diamond and cubic boron nitride
Book Title
Powder Metallurgy Data. Refractory, Hard and Intermetallic Materials
In
13 Hard materials
Book DOI
10.1007/b83029
Chapter DOI
10.1007/10858641_7
Part of
Landolt-Börnstein - Group VIII Advanced Materials and Technologies
Volume
2A2
Editors
  • P. Beiss
  • R. Ruthardt
  • H. Warlimont
  • Authors
  • G. E. Spriggs
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