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    CONTACTOR AND METHOD FOR EVALUATING MICROABRASION CHARACTERISTICS OF SINGLE-CRYSTAL DIAMOND USING SAME
    1.
    发明公开
    CONTACTOR AND METHOD FOR EVALUATING MICROABRASION CHARACTERISTICS OF SINGLE-CRYSTAL DIAMOND USING SAME 审中-实审

    公开(公告)号：EP4431905A1

    公开(公告)日：2024-09-18

    申请号：EP22892487.4

    申请日：2022-10-13

    申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

    发明人： SUMIYA, Hitoshi ,  KOBAYASHI, Yutaka

    IPC分类号： G01N3/56

    CPC分类号： G01N3/56

    摘要： A contactor composed of polycrystalline diamond including a plurality of diamond particles, wherein: the contactor is configured such that a rotational axis passes through the center thereof, the contactor comprising a first portion that includes an inner end part and has a given thickness in the radial direction, and a second portion that includes an outer end part and has a reduced thickness in the radial direction; the second portion has a first surface that is continuous with the upper surface of the first portion, a second surface that is continuous with the lower surface of the first portion, and a connecting surface that connects the first and second surfaces and includes the outer end part; the angle θ formed by a first line segment indicating the first surface in a cross-section taken along the rotational axis and a second line segment indicating the second surface in said cross-section is 100-150° inclusive; the length between a first boundary part that is the boundary between the first surface and the connecting surface and a second boundary part that is the boundary between the second surface and the connecting surface is 1-10 µm inclusive; the length from the rotational axis to the outer end part is 1-10 mm inclusive; and the average grain diameter of the plurality of diamond particles is 0.1-100 µm inclusive.

    SYNTHETIC SINGLE CRYSTAL DIAMOND AND METHOD FOR PRODUCING SAME
    2.
    发明公开
    SYNTHETIC SINGLE CRYSTAL DIAMOND AND METHOD FOR PRODUCING SAME 审中-公开

    公开(公告)号：EP4174223A1

    公开(公告)日：2023-05-03

    申请号：EP21833853.1

    申请日：2021-05-14

    申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

    发明人： SUMIYA, Hitoshi ,  LEE, Jin Hwa ,  TERAMOTO, Minori

    IPC分类号： C30B29/04 ,  B01J3/06 ,  C01B32/26 ,  C30B9/10 ,  C30B33/04

    摘要： A synthetic single crystal diamond containing 100 ppm or more and 1500 ppm or less of nitrogen atoms, in which the synthetic single crystal diamond contains aggregates each composed of one vacancy and two to four nitrogen atoms present adjacent to the vacancy, a ratio b/a of a length b of a short diagonal line to a length a of a long diagonal line of diagonal lines of a Knoop indentation in a direction in a {001} plane of the synthetic single crystal diamond is 0.08 or less, and the Knoop indentation is formed by measuring Knoop hardness in the direction in the {001} plane of the synthetic single crystal diamond according to JIS Z 2251: 2009 under conditions of a temperature of 23°C±5°C and a test load of 4.9 N.

    POLYCRYSTALLINE DIAMOND BODY, MANUFACTURING METHOD THEREFOR, AND TOOL
    8.
    发明公开
    POLYCRYSTALLINE DIAMOND BODY, MANUFACTURING METHOD THEREFOR, AND TOOL 有权
    POLYKRISTALLINERDIAMANTKÖRPER，HERSTELLUNGSVERFAHRENDAFÜRUND WERKZEUG

    公开(公告)号：EP2930144A1

    公开(公告)日：2015-10-14

    申请号：EP13859687.9

    申请日：2013-12-05

    申请人： Sumitomo Electric Industries, Ltd.

    发明人： SATO, Takeshi ,  YAMAMOTO, Katsuko ,  IKEDA, Kazuhiro ,  SUMIYA, Hitoshi

    IPC分类号： C01B31/06 ,  B01J3/06 ,  C04B35/52

    摘要： Provided are a diamond polycrystalline body having a longer life than conventional diamond polycrystalline bodies when it is slid, a method for manufacturing the same, and a tool. In a diamond polycrystalline body (2), at least one element whose sulfide or chloride has a melting point of less than or equal to 1000°C is added thereto, and crystal grains have an average grain size of less than or equal to 500 nm. Thereby, wear of diamond can be suppressed, and the diamond polycrystalline body can have a longer life when it is slid.

    摘要翻译： 提供一种金刚石多晶体，其在滑动时具有比常规金刚石多晶体更长的寿命，其制造方法和工具。 在金刚石多晶体（2）中，向其中加入硫化物或氯化物的熔点小于或等于1000℃的至少一种元素，晶粒的平均粒径小于或等于500nm 。 因此，可以抑制金刚石的磨损，并且金刚石多晶体在滑动时具有更长的寿命。

    SINGLE CRYSTAL DIAMOND AND DIAMOND TOOL
    9.
    发明公开
    SINGLE CRYSTAL DIAMOND AND DIAMOND TOOL 审中-公开
    EINRISTALLINER DIAMANT UND DIAMANTWERKZEUG

    公开(公告)号：EP2848716A1

    公开(公告)日：2015-03-18

    申请号：EP14792151.4

    申请日：2014-04-16

    申请人： Sumitomo Electric Industries, Ltd. ,  Sumitomo Electric Hardmetal Corp.

    发明人： NISHIBAYASHI, Yoshiki ,  UEDA, Akihiko ,  SUMIYA, Hitoshi ,  KOBAYASHI, Yutaka ,  SEKI, Yuichiro ,  TAKAHASHI, Toshiya

    IPC分类号： C30B29/04 ,  C23C16/27 ,  C01B31/06

    摘要： A single crystal diamond (10) has a surface (10a). In the single crystal diamond (10), a measurement region (20) is defined in the surface (20a), the measurement region (20) includes a portion exhibiting a transmittance that is highest in the single crystal diamond (10) and a portion exhibiting a transmittance that is lowest in the single crystal diamond (10), the measurement region (20) has a plurality of square regions (20a) that are continuously arranged and each have a side having a length of 0.2 mm, and an average value of transmittances in each of the plurality of square regions (20a) is measured, wherein assuming that the average value of the transmittances in one square region (20a) is defined as T 1 and the average value of the transmittances in another square region (20a) adjacent to the one square region (20a) is defined as T 2 , a relation of ((T 1 - T 2 )/((T 1 + T 2 ) /2) x 100)/0.2 ≤ 20 (%/mm) is satisfied throughout the measurement region (20).

    摘要翻译： 单晶金刚石（10）具有表面（10a）。 在单晶金刚石（10）中，在表面（20a）中限定了测量区域（20），测量区域（20）包括在单晶金刚石（10）中呈现最高透射率的部分， 表现出在单晶金刚石（10）中最低的透射率，测量区域（20）具有连续布置的多个方形区域（20a），并且每个区域具有长度为0.2mm的一侧，平均值 测量多个正方形区域（20a）中的每一个中的透射率的平均值，其中假设一个正方形区域（20a）中的透射率的平均值被定义为T 1，并且另一个正方形区域（20a）中的透射率的平均值 ）定义为T 2，（（T 1 -T 2）/（（T 1 + T 2）/ 2）×100）/0.2‰¤20（％/ mm）满足整个测量区域（20）。