公开(公告)号：US20210024357A1

公开(公告)日：2021-01-28

申请号：US16969338

申请日：2019-02-08

Applicant: Mitsui Mining & Smelting Co., Ltd.

Inventor： Hitoshi KAJINO ,  Shoji IMAURA

IPC: C01B32/921 ,  C01B32/914

Abstract: Out of sintered metal carbides having an extremely high melting point, there is provided a sintered metal carbide which can be produced without having to perform sintering under high pressure such as hot pressing or HIP, having a high relative density and excellent mechanical strength. A sintered metal carbide of at least one metal selected from the group consisting of elements of Groups 4 and 5 of the periodic table, wherein the sintered metal carbide contains Si element of 0.1 wtppm or more and 10,000 wtppm or less.

公开(公告)号：US20240262758A1

公开(公告)日：2024-08-08

申请号：US18570254

申请日：2022-06-07

Applicant: Mitsui Mining & Smelting Co., Ltd.

Inventor： Hitoshi KAJINO ,  Shoji IMAURA

IPC: C04B41/87 ,  C04B38/00 ,  C04B41/45 ,  C04B41/50

CPC classification number: C04B41/87 ,  C04B38/0054 ,  C04B41/4523 ,  C04B41/4558 ,  C04B41/457 ,  C04B41/5057 ,  C04B2235/3817 ,  C04B2235/425 ,  C04B2235/95

Abstract: Provided is a refractory member that is excellent in corrosion resistance and excellent in the adhesiveness of a carbide coating disposed on a surface of a graphite material base. The refractory member includes: a graphite material base; and a carbide layer disposed to coat at least a part of a surface of the graphite material base. In the refractory member, the graphite material base includes a graphite material phase and a pore, the carbide layer includes a composite region, and the composite region includes an alternating region in which a continuous graphite material phase of at least 50 μm or more and a continuous carbide phase of at least 50 μm or more alternately exist in a horizontal direction along an interface between the graphite material base and the carbide layer, as viewed in a cross section along the thickness direction of the carbide layer.