Cubic boron nitride cutting tool insert with excellent resistance to chipping and edge fracture
    2.
    发明公开
    Cubic boron nitride cutting tool insert with excellent resistance to chipping and edge fracture 有权
    立方氮化硼与阻力的切削刀具刀片,取消和角断裂

    公开(公告)号:EP1780186A2

    公开(公告)日:2007-05-02

    申请号:EP06021400.4

    申请日:2006-10-12

    发明人: Dahl, Leif

    摘要: A cutting tool insert which can, for example, be used for machining of hardened steel, hot and cold working tool steel, die steel, case hardened steel, high speed steel and ductile grey cast iron and composed of a composite comprising a cBN-phase and a binder phase comprising a titaniumcarbonitride phase and a TiB 2 phase is disclosed. In the XRD pattern from the composite using CuKa-radiation, the peak height ratio of the strongest (101) TiB 2 peak and the strongest cBN (111) peak is less than 0.06, the (220) peak from the titanium carbonitride phase in the XRD-pattern intersects both vertical lines of the PDF-lines of TiC (PDF 32-1383) and TiN (PDF 38-1420) and the lowest intersected point height is at least 0.15 of the maximum (220) peak height of the ceramic binder phase. The insert is made by powder metallurgical methods milling, pressing and sintering, the sintering being performed at lowest possible temperature for shortest possible time necessary to obtain a dense structure.

    摘要翻译: 一种切削工具刀片哪位可以,例如,被用于淬火钢,热水和冷加工工具钢,钢,表面硬化钢,高速钢和球墨铸铁灰铸铁的机械加工和复合材料,包括一个的cBN相构成 和粘合剂相包含titaniumcarbonitride相和的TiB 2相是游离缺失盘。 在从使用CuKα辐射复合物中的X射线衍射图案,最强(101)的TiB 2峰的峰高比和最强的cBN(111)峰是小于0.06,从所述钛的碳氮化相的(220)峰 XRD图案相交的TiC(PDF 32-1383)和TiN(PDF 38-1420)的PDF-线的两个垂直线和最低相交点的高度是所述陶瓷粘合剂的最大(220)峰高度的至少00:15 阶段。 所述插入件通过粉末冶金方法研磨,压制和烧结制造,烧结正在执行在尽可能低的温度下短时间内必要获得致密的结构。

    SEMICONDUCTOR CERAMIC AND POSITIVE TEMPERATURE COEFFICIENT THERMISTOR
    10.
    发明公开
    SEMICONDUCTOR CERAMIC AND POSITIVE TEMPERATURE COEFFICIENT THERMISTOR 有权
    HALBLEITERKERAMIK发烧友麻省理工学院温室温泉

    公开(公告)号:EP2377836A1

    公开(公告)日:2011-10-19

    申请号:EP09831970.0

    申请日:2009-12-11

    IPC分类号: C04B35/46 H01C7/02

    摘要: A semiconductor ceramic of the present invention includes a Ba m TiO 3 -based composition, as a main component, having a perovskite structure represented by general formula A m BO 3 . The molar ratio m between an A site and a B site satisfies 1.001 ≤ m ≤ 1.01. Part of Ba constituting the A site is replaced with Bi, Ca, a rare-earth element, and at least one of Li and Na. The content of the Ca when the total number of moles of the elements constituting the A site is 1 mole is 0.05 to 0.20 (preferably 0.125 to 0.175) on a molar ratio basis. A PTC thermistor includes a component body 1 formed of the semiconductor ceramic. Accordingly, there is provided a lead-free semiconductor ceramic that substantially does not contain lead and that has desired PTC characteristics and high reliability,

    摘要翻译: 本发明的半导体陶瓷包括具有由通式A m BO 3表示的钙钛矿结构作为主要成分的Ba m TiO 3基组合物。 A位点与B点之间的摩尔比m满足1.001‰‰‰1.01。 构成A位点的Ba的一部分被Bi,Ca,稀土元素和Li和Na中的至少一种所取代。 构成A位的元素的总摩尔数为1摩尔时,Ca的含量为摩尔比为0.05〜0.20(优选为0.125〜0.175)。 PTC热敏电阻包括由半导体陶瓷形成的部件主体1。 因此,提供了一种基本上不含铅并且具有期望的PTC特性和高可靠性的无铅半导体陶瓷,