Ceramic composite body, process for producing a ceramic composite
    1.
    发明授权
    Ceramic composite body, process for producing a ceramic composite 失效
    陶瓷复合体,陶瓷复合材料的制造工艺

    公开(公告)号:US5352533A

    公开(公告)日:1994-10-04

    申请号:US946307

    申请日:1992-10-26

    摘要: A composite body includes 5 to 40% by mass of SiC whiskers and/or up to 80% by mass SiC lamellae and/or of up to 75% by mass SiC powder, 0.05 to 3% by mass of at least one component selected from the group of Y.sub.2 O.sub.3, SiO.sub.3, MgO, NiO and AlN and/or up to 40% by mass of at least one compound selected from the group of carbides, nitrides or carbonitrides of a metal from one of the Groups IVa, Va, Via of the Periodic Table of elements, and/or up to 40% by mass of at least one oxide of at least one metal selected from the group which consists of the metals of Group IVa of the Periodic Table of elements, 0.05 to 10% by mass of a metal constituent selected from the group which consists of at least one element selected from the group including nickel, cobalt and iron, and of the group which consists of chromium in an amount up to 25% of the mass of the metal constituent with the balance being at least one element selected from the group which consists of nickel, cobalt and iron, and a minimum of 30% by mass Al.sub.2 O.sub.3 to the balance of the body.

    摘要翻译: PCT No.PCT / EP91 / 00980 Sec。 371日期:1992年10月26日 102(e)日期1992年10月26日PCT 1991年5月28日PCT PCT。 第WO91 / 18847号公报 日本1991年12月12日。复合体包含5〜40质量%的SiC晶须和/或高达80质量%的SiC薄片和/或高达75质量%的SiC粉末,0.05〜3质量% 的至少一种选自Y 2 O 3,SiO 3,MgO,NiO和AlN的组分和/或至多40质量%的至少一种选自以下的金属的碳化物,氮化物或碳氮化物的化合物 元素周期表IVa,Va,VIa族和/或至多40质量%的至少一种选自元素周期表第Ⅳa族金属的金属的至少一种金属, ,0.05〜10质量%的选自由选自镍,钴和铁中的至少一种元素组成的组的金属成分,以及由铬组成的基团,其含量高达25% 金属成分的质量余量为选自镍,钴和铁组成的组中的至少一种元素 ,以及至少30质量%的Al 2 O 3与身体的平衡。

    Composite hard metal body and process for its production
    2.
    发明授权
    Composite hard metal body and process for its production 失效
    复合硬质金属体及其生产工艺

    公开(公告)号:US5173107A

    公开(公告)日:1992-12-22

    申请号:US689237

    申请日:1991-06-10

    摘要: The invention relates to a composite hard metal body of hard material, a binder and embedded reinforcing material, as well as to a process for the production of the composite hard metal body by methods of powder metallurgy.In order to create a composite hard metal body with improved toughness under load, improved hardness and a lower fracture susceptibility, the invention proposes to build in monocrystalline, preferably needle-shaped and/or platelet-shaped reinforcing materials, coated with an inert layer with respect to the binder metal phase and consisting of borides and/or carbides, and/or nitrides and/or carbonitrides of the elements of Groups IVa or Va or mixtures thereof and/or coated monocrystalline reinforcing material of SiC, Si.sub.3 N.sub.4, Si.sub.2 N.sub.2 O, Al.sub.2 O.sub.3, ZrO.sub.2, AlN and/or BN.The composite hard metal body is produced by powder-metallurgical methods, whereby the reinforcing material in a deagglomerated and graded state, optionally coated by CVD or PVD with a layer which is inert with respect to the binder metal phase, is blended with the ground mixture of hard materials and binder, dried, granulated, uniaxially pressed or isostatically pressed at low temperatures and then the composite body is produced by sintering, respectively a combined or separate sintering/HIP-process or through axial hot-pressing. The axial hot-pressing is preferred in cases where the reinforcing material surpasses 20% by volume, under this level the other mentioned processes are preferred.

    摘要翻译: PCT No.PCT / DE89 / 00740 Sec。 371日期1991年6月10日 102(e)日期1991年6月10日PCT提交1989年11月27日PCT公布。 出版物WO90 / 07017 日期:1982年6月28日本发明涉及硬质材料复合硬质体,粘合剂和嵌入增强材料,以及通过粉末冶金法制造复合硬质合金体的方法。 为了产生具有改善的负载韧性,改善的硬度和较低的断裂敏感性的复合硬质金属体,本发明提出以单晶,优选针状和/或片状形状的增强材料制成,涂覆有惰性层 相对于粘合剂金属相并且由硼化物和/或碳化物,和/或第Ⅳa族或Ⅴa族元素或其混合物的氮化物和/或碳氮化物和/或SiC,Si 3 N 4,Si 2 N 2 O,Al 2 O 3等的涂覆的单晶增强材料组成, ZrO 2,AlN和/或BN。 通过粉末冶金方法制造复合硬质金属体,由此将任选地通过CVD或PVD涂覆的具有相对于粘合剂金属相惰性的层的解聚集和分级状态的增强材料与研磨混合物 硬质材料和粘合剂,在低温下干燥,造粒,单轴压制或等静压,然后分别通过烧结,组合或分离的烧结/ HIP工艺或通过轴向热压来制备复合体。 在增强材料超过20体积%的情况下,优选轴向热压,在该水平下,优选其它所述的方法。

    Cermet and method of producing it
    3.
    发明授权
    Cermet and method of producing it 失效
    金属陶瓷及其生产方法

    公开(公告)号:US5670726A

    公开(公告)日:1997-09-23

    申请号:US507442

    申请日:1995-09-01

    CPC分类号: C22C29/04 B22F2998/00

    摘要: In order to improve the toughness characteristics of a cermet alloy, while retaining high resistance to wear, a composition is disclosed which contains 30 to 60% by weight of Ti, 5 to 20% by weight of W, 5 to 15% by weight of Ta, in which up to 70% of the Ta can be replaced by Nb, and 5 to 25% by weight of Ni and/or Co binder with more than 80 mole %, relative to the above transition elements of carbon and nitrogen. The composition is prepared by grinding, compressing and sintering a solid, powder-form mixture containing (Ti,W,Ta,Nb)C powder, Ti(C,N) powder, and WC powder, each powder having a particle size

    摘要翻译: PCT No.PCT / DE94 / 00048 Sec。 371 1995年9月1日 102(e)1995年9月1日PCT PCT 1994年1月22日PCT公布。 出版物WO94 / 21835 日期1994年9月29日为了提高金属陶瓷合金的韧性,在保持高耐磨性的同时,公开了含有30〜60重量%的Ti,5〜20重量%的W,5〜 相对于上述过渡元素,将15重量%的Ta(其中高达70%的Ta可被Nb代替)和5〜25重量%的Ni和/或Co粘合剂,其含量超过80摩尔% 碳和氮。 通过研磨,压缩和烧结含有(Ti,W,Ta,Nb)C粉末,Ti(C,N)粉末和WC粉末的固体粉末混合物制备组合物,每种粉末具有粒径<1.5 亩,加上Ni粉末和/或Co粉末。 该混合物包括以下成分:(a)平均粒径<1.5μm的(Ti,W,Ta,Nb)C,该混合碳化物含有20〜50重量%的TiC,20〜40重量% WC和20〜40重量%的(Ta,Nb)C; (b)Ti(C,N),平均粒径<1.5μm,N /(C + N)比<0.7; 平均粒度小于1.5μm的WC; 和(d)镍和/或钴。

    Hard-metal body
    4.
    发明授权
    Hard-metal body 失效
    硬金属体

    公开(公告)号:US5223020A

    公开(公告)日:1993-06-29

    申请号:US684901

    申请日:1991-04-24

    申请人: Hans Kolaska

    发明人: Hans Kolaska

    IPC分类号: C22C1/05 C22C29/02 C22C29/06

    CPC分类号: C22C29/02 C22C29/067

    摘要: The invention relates to a hard-metal body whose hard-metal phase consist of tungsten carbide and whose binder metal phase consists of nickel and chrome.Especially for the enhancement of the corrosion resistance it is proposed that the hard metal contain also TiN in addition to the hard-metal phase, whereby the content of TiN and and binder metal phase amounts to 5 to 25% by mass and is composed by 0.1 to 10% by mass TiN, 5 to 15% by mass chrome, the balance being made up by nickel.

    摘要翻译: PCT No.PCT / DE89 / 00662 Sec。 371日期1991年4月24日 102(e)日期1991年4月24日PCT 1989年10月18日PCT公布。 出版物WO90 / 05200 日期1990年5月17日本发明涉及一种硬质合金体,其硬质合金相由碳化钨组成,其粘结金属相由镍和铬组成。 特别是为了提高耐腐蚀性,提出除了硬质金属相以外,硬质金属也含有TiN,由此TiN和粘合剂金属相的含量为5〜25质量%,由0.1 至10质量%的TiN,5〜15质量%的铬,余量由镍构成。

    Composite and process for the production thereof
    5.
    发明授权
    Composite and process for the production thereof 失效
    复合材料及其制造方法

    公开(公告)号:US6124040A

    公开(公告)日:2000-09-26

    申请号:US945561

    申请日:1997-11-20

    摘要: The invention concerns composites substantially consisting of: a cermet material having a binder metal phase of between 5 and 30 mass % and the remainder comprising at least one carbon nitride phase; or a hard metal with a hard material phase of between 70 and 100 %, the remainder being a binder metal phase, with the exception of a WC-Co hard metal, with up to 25 mass % cobalt as binder metal; or a powder-metallurgically produced steel. The invention further concerns a process for producing this composite. In order to improve bending strength and hardness, sintering is carried out in a microwave field.

    摘要翻译: PCT No.PCT / DE95 / 00548 Sec。 371日期:1997年11月20日 102(e)1997年11月20日日期PCT提交1995年4月26日PCT公布。 第WO96 / 33830号公报 日期1996年10月31日本发明涉及基本上由以下组成的复合材料:具有5至30质量%之间的粘结剂金属相的金属陶瓷材料,其余包含至少一个氮化碳相; 或硬质材料相为70〜100%的硬质金属,剩余部分为除了WC-Co硬质合金之外的粘合剂金属相,最多含有25质量%的钴作为粘合剂金属; 或粉末冶金制造的钢。 本发明还涉及一种生产该复合材料的方法。 为了提高弯曲强度和硬度,在微波场中进行烧结。

    Process for producing a sintered hard metal body and sintered hard metal
body produced thereby
    6.
    发明授权
    Process for producing a sintered hard metal body and sintered hard metal body produced thereby 失效
    由此制造烧结硬质金属体和烧结硬质金属体的方法

    公开(公告)号:US4944800A

    公开(公告)日:1990-07-31

    申请号:US318177

    申请日:1989-03-02

    摘要: A sintered hard metal body having improved heat resistance and higher cutting performance is produced by a process including mixing together at least one hard substance, at least one binder material, and at least one of at least one complex carbide and at least one complex nitride to form a starting mixture each constituent of which is in powdered form. The at least one hard substance is selected from the group consisting of carbides, nitrides, and carbonitrides of transition metals of Groups IVB, VB and VIB of the Periodic Table of Elements, is present as at least one of a carbide, a mixed carbide, a nitride, a mixed nitride, a carbonitride, and a mixed carbonitride, and has a cubic crystal form. The at least one binder metal is selected from the group including iron, nickel and cobalt. The starting mixture is then ground and compressed into a predetermined shape, followed by sintering to melt the at least one binder metal and decompose the complex carbide and/or complex nitride to form at least one of at least one transition metal carbide and at least one transition metal nitride which grows on the surface of the at least one hard substance in powdered form and forms a diffusion inhibiting layer thereon.

    摘要翻译: 通过包括将至少一种硬物质,至少一种粘合剂材料和至少一种复合碳化物和至少一种复合氮化物中的至少一种混合在一起的方法来生产具有改善的耐热性和较高切割性能的烧结硬质金属体, 形成起始混合物,其各成分为粉末形式。 所述至少一种硬质物质选自元素周期表IVB,VB和VIB族的过渡金属的碳化物,氮化物和碳氮化物,其以碳化物,混合碳化物, 氮化物,混合氮化物,碳氮化物和混合碳氮化物,并且具有立方晶体形式。 所述至少一种粘合剂金属选自铁,镍和钴。 然后将起始混合物研磨并压缩成预定形状,随后烧结以熔化至少一种粘合剂金属并分解复合碳化物和/或复合氮化物以形成至少一种过渡金属碳化物和至少一种过渡金属碳化物 过渡金属氮化物,其以粉末形式在所述至少一种硬物质的表面上生长并在其上形成扩散抑制层。

    Process for producing a coated hard-metal cutting body
    7.
    发明授权
    Process for producing a coated hard-metal cutting body 失效
    涂覆硬金属切割体的制造方法

    公开(公告)号:US5403628A

    公开(公告)日:1995-04-04

    申请号:US64040

    申请日:1993-05-07

    摘要: A process for producing a cutting tool includes the steps of subjecting a sintered body to a nitrogen gas pressure treatment conducted under a pressure ranging between 0.2 and 10 MPa and at a temperature between 900.degree. C. to 1300.degree. C. for a period of at least 0.5 hours, evacuating a protective gas at a pressure between 10 Pa and 20 kPa at temperatures between 1000.degree. C. and 1350.degree. C. over more than 0.5 hours before the sintered body is cooled under a pressure between 10 Pa and 0.1 Pa, thereby forming a binding layer and treating a metal base body with CVD or PVD or plasma activated CVD for coating the metal base body with the binding layer.

    摘要翻译: PCT No.PCT / DE91 / 00913 Sec。 371日期:1993年5月7日 102(e)日期1993年5月7日PCT 1991年11月14日PCT PCT。 出版物WO92 / 09722 日期:1992年6月11日。一种切削工具的制造方法,其特征在于,包括以下步骤:在0.2〜10MPa的压力和900〜1300℃的温度下对烧结体进行氮气压力处理。 在至少0.5小时的时间内,在1000℃至1350℃之间的温度下在10Pa和20kPa之间的压力下抽空保护气体超过0.5小时,然后在压力下冷却烧结体 在10Pa和0.1Pa之间,由此形成粘合层并用CVD或PVD或等离子体激活CVD处理金属基体,以用粘合层涂覆金属基体。