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    • 1. 发明申请
    • Hard alloy and W-based composite carbide powder used as starting material
    • 硬质合金和W基复合碳化物粉末用作原料
    • US20040079191A1
    • 2004-04-29
    • US10690672
    • 2003-10-23
    • TOSHIBA TUNGALOY CO., LTD.
    • Masaki Kobayashi
    • C22C029/02
    • C22C29/08C22C29/02
    • There is disclosed a hard alloy which comprises 5 to 50% by volume of a metallic binder phase comprising at least one element selected from cobalt, nickel and iron as a main component, 0 to 40% by volume of a cubic crystal compound comprising at least one compound selected from a carbide, nitride and mutual solid solution of a metal of Group IVB, VB or VIB of the Periodic Table, and the reminder being hexagonal tungsten carbide and inevitable impurities, wherein at least one specific element(s) selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, manganese and rhenium is dissolved in the crystal of the hexagonal tungsten carbide as a solid solution in an amount of 0.1 to 3.0% by weight based on the amount of the tungsten carbide.
    • 公开了一种硬质合金,其含有5〜50体积%的包含选自钴,镍和铁作为主要成分的至少一种元素的金属粘结相,0〜40体积%的立方晶系化合物至少包含 选自元素周期表第IVB族,第VBB族或VIB族金属的碳化物,氮化物和互溶液中的一种化合物,并且提醒为六方碳化钨和不可避免的杂质,其中至少一种选自 以钛,锆,铪,钒,铌,钽,铬,钼,锰和铼为主成分的基团以作为固溶体的六方晶系碳化钨的结晶溶解量为0.1〜3.0重量% 的碳化钨。
    • 2. 发明申请
    • Coated cemented carbide excellent in peel strength and process for producing the same
    • 剥离强度优异的涂布硬质合金及其制造方法
    • US20020081464A1
    • 2002-06-27
    • US10022582
    • 2001-12-20
    • TOSHIBA TUNGALOY CO., LTD.
    • Masaki KobayashiHiroshi Kitada
    • B32B009/00
    • C23C30/005
    • There are disclosed a coated cemented carbide excellent in peel strength which comprises a cemented carbide base metal comprising a hard phase containing tungsten carbide and a binder phase, and a hard film being provided on a surface of the base metal with a single layer or two or more laminated layers, wherein (1) at least part of the surface of the base metal is subjected to machining, and (2) (i) substantially no crack is present in particles of the hard phase existing at an interface of the surface of the base metal subjected to machining and the hard film and/or (2) (ii) peak intensities of crystal surfaces satisfy hs(001)wc/hs(101)wcnull1.1nullhi(001)wc/hi(101)wc wherein hs(001)wc and hs(101)wc each represent a peak intensity of (001) crystal face and that of (101) crystal face at the surface of the base metal subjected to machining processing, respectively, and hi(001)wc and hi(101)wc each represent a peak intensity of (001) crystal face and that of (101) crystal face in the base metal, respectively. and a process for preparing the same.
    • 公开了一种剥离强度优异的涂层硬质合金,其包括硬质合金基体金属,该硬质合金基体金属包括含有碳化钨和粘结相的硬质相,并且硬质膜设置在基体金属的表面上,具有单层或两层或 更多的层压层,其中(1)基体金属的表面的至少一部分经受机械加工,和(2)(i)在存在于表面的界面处的硬质相的颗粒中基本上不存在裂纹 进行机械加工的基体金属和/或(2)(ii)(ii)(ii)晶体表面的峰值强度满足 hs(001)wc / hs(101)wc 其中hs(001)wc和hs(101)wc分别表示(001)晶面的峰强度和(101)晶面的峰强度,(101)wc / hi(101)wc )晶面,并且hi(001)wc和hi(101)wc分别表示(001)晶体的峰值强度 (101)晶面分别在贱金属中。 及其制备方法。
    • 3. 发明授权
    • Plate-crystalline tungsten carbide-containing hard alloy, composition
for forming plate-crystalline tungsten carbide and process for
preparing said hard alloy
    • 含有结晶碳化钨的硬质合金,用于形成板状碳化钨的组合物和制备所述硬质合金的方法
    • US5993506A
    • 1999-11-30
    • US977628
    • 1997-11-25
    • Masaki KobayashiKozo KitamuraSatoshi Kinoshita
    • Masaki KobayashiKozo KitamuraSatoshi Kinoshita
    • C22C1/05C22C29/08
    • C22C1/055C22C29/08Y10T428/12056Y10T428/12063
    • Disclosed are a plate-crystalline tungsten carbide-containing hard alloy which comprises 4 to 40% by volume of a binder phase containing at least one of iron group metals selected from Co, Ni and Fe as a main component; and the balance of a hard phase comprising tungsten carbide alone, or tungsten carbide and 50% by volume or less of a compound with a cubic structure selected from at least one of carbide and nitride of the 4a (Ti, Zr and Hf), 5a (V, Nb and Ta) or 6a (Cr, Mo and W) group element of the periodic table and mutual solid solutions thereof, and inevitable impurities,wherein when peak intensities at a (001) face and a (101) face in X-ray diffraction using K.alpha. rays with Cu being a target are represented by h(001) and h(101), respectively, the tungsten carbide satisfies h(001)/h(101) .gtoreq.0.50, a composition for forming a plate-crystalline tungsten carbide, and a process for preparing the plate-crystalline tungsten carbide-containing hard alloy.
    • 公开了含有4〜40体积%的含有选自Co,Ni和Fe中的铁族金属中的至少一种作为主要成分的粘结相的4〜40体积%的硬质合金。 并且包括单独的碳化钨或碳化钨的硬质相的余量和50体积%以下的具有选自4a(Ti,Zr和Hf),5a(Ti,Zr和Hf)的碳化物和氮化物中的至少一种的立方结构的化合物 (V,Nb和Ta)或6a(Cr,Mo和W)族元素及其相互固溶体和不可避免的杂质,其中当X(001)面和(101)面的峰值强度 使用K为靶的Kα射线的射线衍射分别由h(001)和h(101)表示,碳化钨满足h(001)/ h(101)> / = 0.50,用于形成 板状碳化钨,以及制备含板状碳化钨的硬质合金的方法。