公开(公告)号：US20240279126A1

公开(公告)日：2024-08-22

申请号：US18424835

申请日：2024-01-28

Applicant: CENTRAL SOUTH UNIVERSITY ,  SF DIAMOND CO., LTD.

Inventor： Shaohe ZHANG ,  Linglong RONG ,  Dongpeng ZHAO ,  Xiangwang KONG ,  Jincheng LI ,  Hua GAO ,  Jingjing WU ,  Haijiang FANG ,  Haoyang ZHANG

IPC: C04B37/02 ,  B28B1/00 ,  B33Y10/00 ,  B33Y80/00 ,  C04B35/532 ,  C04B35/634 ,  C04B35/638

CPC classification number: C04B37/021 ,  B28B1/001 ,  B33Y80/00 ,  C04B35/532 ,  C04B35/63408 ,  C04B35/6342 ,  C04B35/63424 ,  C04B35/638 ,  B33Y10/00 ,  C04B2235/427 ,  C04B2235/5436 ,  C04B2235/6026 ,  C04B2235/6562 ,  C04B2235/6567 ,  C04B2235/6582 ,  C04B2235/945 ,  C04B2237/363 ,  C04B2237/401 ,  C04B2237/62

Abstract: The disclosure relates to a polycrystalline diamond composite sheet having a ripple-shaped gradient layer and a preparation method thereof. The polycrystalline diamond composite sheet consists of a cemented carbide substrate, a ripple-shaped gradient layer of a multi-layer structure, and a polycrystalline diamond layer from bottom to top. In the ripple-shaped gradient layer, a content of polycrystalline diamond increases from bottom to top, and a content of cemented carbide decreases from bottom to top. In the ripple-shaped gradient layer, an amplitude of a ripple-shaped structure is 0.2 to 0.6 mm, a wavelength is 1 to 2 mm, a spacing between an upper ripple and a lower ripple of a top layer is set to a gradient of (t/2 to t) mm to t mm from a peak to a trough, and spacings between an upper ripple and a lower ripple of remaining layers are all t mm, wherein t is 0.05 to 0.4.

公开(公告)号：US20240228384A1

公开(公告)日：2024-07-11

申请号：US18401725

申请日：2024-01-02

Applicant: CENTRAL SOUTH UNIVERSITY ,  SF DIAMOND CO., LTD.

Inventor： Shaohe ZHANG ,  Yulu LI ,  Dongpeng ZHAO ,  Xiangwang KONG ,  Linglong RONG ,  Jincheng LI ,  Hua GAO ,  Dongyu WU ,  Jingjing WU ,  Leilei LIU ,  Pinghe SUN ,  Haijiang FANG

IPC: C04B35/56 ,  B28B1/00 ,  B33Y10/00 ,  B33Y70/10 ,  C04B35/5831 ,  C04B35/626 ,  C04B35/634

CPC classification number: C04B35/5626 ,  B28B1/001 ,  B33Y10/00 ,  B33Y70/10 ,  C04B35/5831 ,  C04B35/62695 ,  C04B35/6342 ,  C04B2235/3847 ,  C04B2235/386 ,  C04B2235/6026 ,  C04B2235/6562 ,  C04B2235/6567 ,  C04B2235/658 ,  C04B2235/75

Abstract: The disclosure provides a gradient structure cubic boron nitride composite sheet and a preparation method thereof. The gradient structure cubic boron nitride composite sheet consists of a cemented carbide substrate, a gradient transition layer, and a CBN layer from bottom to top. The gradient transition layer consists of N gradient layers, and the N is 4 to 18. From bottom to top, there are sequentially a first gradient layer, a second gradient layer, an Nth gradient layer, and so on. Any of the gradient layers consists of CBN and cemented carbide, in which the volume fraction of the cemented carbide in the Nth layer is 5 to 30% less than the volume fraction of the cemented carbide in the N−1th layer, and the volume fraction of the CBN in the Nth layer is 5 to 30% more than the volume fraction of the CBN in the N−1th layer.