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    • 7. 发明授权
    • Composite carbide powder used for cemented carbide and method of
producing the same
    • 用于硬质合金的复合碳化物粉末及其制造方法
    • US5928976A
    • 1999-07-27
    • US859228
    • 1997-05-19
    • Yoshiharu YamamotoNobuaki AsadaYoshihiko Doi
    • Yoshiharu YamamotoNobuaki AsadaYoshihiko Doi
    • B23B27/14B22F1/00C01B32/949C01B31/34
    • C01B31/34C01P2004/61C01P2004/80C01P2006/80
    • In order to provide cemented carbide, provision is made about tungsten carbide powder which has a grain size not smaller than 1 .mu.m and which is mixed with carbon powder and chromium powder to form raw powder. The tungsten carbide powder is formed by fine primary crystal particles of tungsten carbide and satisfies an inequality given by:Y>0.61-0.33 log (X),where Y denotes a half-value width of (211) crystal planes in tungsten carbide (JCPDS-card 25-1047, d=0.9020) measured by a X-ray diffraction method and where X denotes a grain size measured by the FSSS method. There is also provided a method of producing the composite carbide powder having tungsten carbide powder as a main element, the method comprising the steps of preparing tungsten powder which has a mean grain size not smaller than 1 .mu.m, mixing the tungsten powder with carbon powder and chromium powder into a mixture, and processing the mixture in a predetermined atmosphere into fine primary crystal particles of tungsten carbide. One or more of the following additional components may be added to the mixture: Ta, Mo, Nb and Zr.
    • 为了提供硬质合金,对碳化钨粉末进行了规定,该碳化钨粉末的粒径不小于1μm,与碳粉和铬粉混合形成原料粉末。 碳化钨粉末由碳化钨的微细的一次结晶粒子形成,满足由下式给出的不等式:Y> 0.61-0.33log(X),其中Y表示碳化钨中(211)晶面的半值宽度(JCPDS 卡25-1047,d = 0.9020),X表示通过FSSS法测定的晶粒尺寸。 还提供了以碳化钨粉末为主要成分的复合碳化物粉末的制造方法,其特征在于,具有平均粒径为1μm以上的钨粉末,碳粉末 和铬粉末混合成混合物,并将预定气氛中的混合物加工成碳化钨的细晶粒。 可以向混合物中加入一种或多种以下附加组分:Ta,Mo,Nb和Zr。
    • 8. 发明授权
    • Highly hard material coated articles
    • 高硬度材料涂层制品
    • US4402994A
    • 1983-09-06
    • US410919
    • 1982-08-24
    • Mitsunori KobayashiYoshihiko Doi
    • Mitsunori KobayashiYoshihiko Doi
    • B23B27/14B23P15/28C23C14/06C23C14/32C23C30/00C30B28/12C30B29/36C30B29/38B05D1/00B32B15/04C23C15/00
    • C23C14/32C23C30/00C23C30/005Y10S428/911Y10T428/24983Y10T428/31678
    • This invention relates to a highly hard material coated article which comprises a substrate of tool or part consisting of cermets, cemented carbides, tool steels or stainless steels and at least one highly hard material coated on the surface thereof, selected from the group consisting of carbides, nitrides and carbonitrides of at least one of titanium, zirconium and hafnium and those in which oxygen is dissolved, the coating being formed by an ion plating method wherein the accelerating voltage is high in a short time at the initial stage only, the crystals of the coated film being strongly orientated in the direction of for the surface of the tool or part so that the diffraction intensity ratio of the peak from the {220} plane and the secondly strong diffraction peak in the X-ray diffraction using Cu-K.alpha. ray, that is, the diffraction intensity ratio is 15 or less of the latter to 100 of the former and the half value width of the diffraction peak from the {220} plane of the coating film being 0.8.degree. or more on 2.theta. scale.
    • 本发明涉及一种高硬度材料涂层制品,其包括由金属陶瓷,硬质合金,工具钢或不锈钢组成的工具或部件的基底以及涂覆在其表面上的至少一种高硬度材料,所述材料选自碳化物 ,钛,锆和铪中的至少一种的氮化物和碳氮化物以及氧气溶解的氮化物和碳氮化物,通过离子镀法形成涂层,其中仅在初始阶段的短时间内的加速电压高, 该涂膜对于工具或部件的表面以<220°的方向强烈取向,使得在使用Cu的X射线衍射中,来自{220}面的峰与第二强衍射峰的衍射强度比 -Kα射线,也就是说,后者的衍射强度比为15以下,前者的100倍和来自c的{220}面的衍射峰的半值宽度 在2θ刻度上,起泡膜为0.8°或更大。
    • 9. 发明授权
    • Highly hard material coated articles
    • 高硬度材料涂层制品
    • US4401719A
    • 1983-08-30
    • US258550
    • 1981-04-29
    • Mitsunori KobayashiYoshihiko Doi
    • Mitsunori KobayashiYoshihiko Doi
    • B23B27/14B23P15/28C23C14/06C23C14/32C23C30/00C30B28/12C30B29/36C30B29/38B32B15/04B05D3/06C23C15/00
    • C23C14/32C23C30/00C23C30/005Y10S428/911Y10T428/24983Y10T428/31678
    • This invention relates to a highly hard material coated article which comprises a substrate of tool or part consisting of cermets, cemented carbides, tool steels or stainless steels and at least one highly hard material coated on the surface thereof, selected from the group consisting of carbides, nitrides and carbonitrides of at least one of titanium, zirconium and hafnium and those in which oxygen is dissolved, the coating being formed by an ion plating method wherein the accelerating voltage is high in a short time at the initial stage only, the crystals of the coated film being strongly orientated in the direction of for the surface of the tool or part so that the diffraction intensity ratio of the peak from the {220} plane and the secondly strong diffraction peak in the X-ray diffraction using Cu-K.alpha. ray, that is, the diffraction intensity ratio is 15 or less of the latter to 100 of the former and the half value width of the diffraction peak from the {220} plane of the coating film being 0.8.degree. or more than 2 .theta. scale.
    • 本发明涉及一种高硬度材料涂层制品,其包括由金属陶瓷,硬质合金,工具钢或不锈钢组成的工具或部件的基底,以及涂覆在其表面上的至少一种高硬度材料,其选自碳化物 ,钛,锆和铪中的至少一种的氮化物和碳氮化物以及氧气溶解的氮化物和碳氮化物,通过离子镀法形成涂层,其中仅在初始阶段的短时间内的加速电压高, 该涂膜对于工具或部件的表面以<220°的方向强烈取向,使得在使用Cu的X射线衍射中,来自{220}面的峰与第二强衍射峰的衍射强度比 -Kα射线,也就是说,后者的衍射强度比为15以下,前者的100倍和来自c的{220}面的衍射峰的半值宽度 浇注膜为0.8°或2°以上。