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Related Experiment Videos

Sintered superhard materials.

R H Wentorf, R C Devries, F P Bundy

    Science (New York, N.Y.)
    |May 23, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Strong masses of diamond or cubic boron nitride are sintered under high temperature and pressure. These sintered materials exhibit superior hardness, thermal conductivity, and wear resistance, making them ideal for industrial applications.

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    Area of Science:

    • Materials Science
    • Crystallography

    Background:

    • Diamond and cubic boron nitride (c-BN) are known for their exceptional hardness and thermal properties.
    • Sintering these materials into robust masses presents unique manufacturing challenges.

    Purpose of the Study:

    • To investigate the properties of sintered diamond and cubic boron nitride masses.
    • To highlight their advantages over single crystals and their industrial applications.

    Main Methods:

    • Sintering of diamond or c-BN particles at high temperatures and pressures.
    • Characterization of the physical properties of the resulting sintered masses.

    Main Results:

    • Sintered masses approach the hardness and thermal conductivity of single crystals.

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  • Superior resistance to wear and catastrophic splitting compared to single crystals.
  • Commercial-scale production is feasible.

    • Conclusions:

    • Sintered diamond and c-BN offer a superior combination of properties for demanding applications.
    • These materials are increasingly adopted in cutting tools, dies, drills, and high-pressure apparatus.