Alloy
    163.
    发明授权
    Alloy 失效

    公开(公告)号:US480233A

    公开(公告)日:1892-08-02

    申请号:US480233D

    CPC classification number: C22C1/1036

    Composite tooth with frustoconical insert

    公开(公告)号:US12123177B2

    公开(公告)日:2024-10-22

    申请号:US17051152

    申请日:2019-04-30

    Inventor: Guy Berton

    Abstract: A composite tooth is described for working the ground or rocks. The tooth includes a ferrous alloy having a portion reinforced at least partially by an insert. The portion reinforced by the insert is configured to allow, after in-situ reaction, the obtention of an alternating macro-microstructure of millimetric areas concentrated with micrometric globular particles of titanium carbides separated by millimetric areas substantially free of micrometric globular particles of titanium carbides. The millimetric areas concentrated with micrometric globular particles of titanium carbides form a microstructure in which the micrometric interstices between the globular particles are also filled by the ferrous alloy. The macro-microstructure generated by the insert is at least 2 mm, preferably at least 3 mm from a distal surface of the tooth.

    SOLID PCD WITH TRANSITION LAYERS TO ACCELERATE FULL LEACHING OF CATALYST

    公开(公告)号:US20170341147A1

    公开(公告)日:2017-11-30

    申请号:US15536875

    申请日:2015-11-19

    Inventor: Yahua Bao

    Abstract: A method of making a polycrystalline diamond compact includes forming a first layer of polycrystalline diamond precursor materials comprising diamond particles and a first concentration of catalyst, forming a second layer of polycrystalline diamond precursor materials comprising diamond particles and a second concentration of catalyst, and placing a layer of an infiltrant material in the proximity of the first or the second layer of polycrystalline diamond precursor materials. The second concentration of catalyst is greater than the first concentration of catalyst. The infiltrant material is a catalyst. The first layer and the second layer are sintered under high-pressure high-temperature conditions in the presence of the infiltrant material to form the polycrystalline diamond compact. At least a portion of the catalyst is leached from the polycrystalline diamond compact.

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