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    • 1. 发明授权
    • High-pressure phase boron nitride base sinter
    • 高压相氮化硼基烧结矿
    • US6008153A
    • 1999-12-28
    • US101742
    • 1998-07-16
    • Satoru KukinoTetsuo NakaiJunichi ShiraishiTomohiro FukayaShinya Uesaka
    • Satoru KukinoTetsuo NakaiJunichi ShiraishiTomohiro FukayaShinya Uesaka
    • C04B35/5831C04B35/5835
    • C04B35/5831
    • A high-pressure phase boron nitride-based high-hardness high-strength sintered body for cutting tools represented by a milling tool and an end mill etc., which is improved in wear resistance and chipping resistance, is obtained. The high-pressure phase boron nitride-based sintered body according to the present invention comprises a plurality of grains (1) of high-pressure phase boron nitride and a binder phase (2, 3), and the content of the aforementioned grains (1) is at least 20.0 volume % and not more than 99.7 volume %. The aforementioned binder phase (2, 3) includes a first binder phase (2) enclosing the aforementioned grains (1) and a second binder phase (3) other than that. The first binder phase (2) consists of the form of at least either a nitride of at least one of Ti, TiAl, Zr and Hf or a solid solution thereof. The aforementioned second binder phase (3) includes a grain growth suppressive binder phase (4) between a plurality of the aforementioned grains (1) enclosed with the aforementioned first binder phase (2).
    • PCT No.PCT / JP97 / 04410 Sec。 371日期:1998年7月16日 102(e)日期1998年7月16日PCT 1997年12月3日PCT PCT。 出版物WO98 / 24736 日期1998年6月11日获得了耐磨性和耐崩裂性提高的用于切削工具的高压相氮化硼系高硬度高强度烧结体。 根据本发明的高压相氮化硼基烧结体包括多个高压相氮化硼颗粒(1)和粘结相(2,3),并且上述颗粒(1)的含量 )为20.0体积%以上且99.7体积%以下。 上述粘合剂相(2,3)包括包围上述颗粒(1)的第一粘结相(2)和除此之外的第二粘结相(3)。 第一粘合剂相(2)由至少一种Ti,TiAl,Zr和Hf的氮化物或其固溶体的形式组成。 上述第二粘结相(3)包括在由上述第一粘结相(2)包围的多个上述颗粒(1)之间的晶粒生长抑制粘合剂相(4)。
    • 2. 发明授权
    • Hard and tough sintered body
    • 坚硬坚韧的烧结体
    • US6001758A
    • 1999-12-14
    • US960773
    • 1997-10-30
    • Tomohiro FukayaTetsuo NakaiJunichi ShiraishiSatoru KukinoShinya Uesaka
    • Tomohiro FukayaTetsuo NakaiJunichi ShiraishiSatoru KukinoShinya Uesaka
    • C04B35/5831C04B35/5835
    • C04B35/5831
    • A sintered body consists of high-pressure phase boron nitride, a residual binder phase and an unavoidable impurity, and contains high-pressure phase boron nitride powder which is previously coated with a binder before sintering. The coating binder consists of an element belonging to the group 4a, 5a or 6a of the periodic table or the like, and has an average thickness of 5 to 300 nm. Binder powder other than the coating binder consists of an element belonging to the group 4a, 5a or 6a of the periodic table or the like, and a contact ratio of high-pressure phase boron nitride particles in surface-to-surface contact with each other is at least 20% and less than 50%. The resulting high-pressure phase boron nitride-based hard and tough sintered body for a cutting tool is improved in wear resistance and chipping resistance.
    • 烧结体由高压相氮化硼,残余粘结相和不可避免的杂质组成,并且包含预先在烧结之前用粘合剂涂覆的高压相氮化硼粉末。 涂层粘合剂由属于周期表等的4a,5a或6a族元素组成,平均厚度为5〜300nm。 涂层粘合剂以外的粘合剂粉末由属于周期表等的4a,5a或6a族的元素组成,高压相氮化硼颗粒在表面与表面之间接触的接触比 至少为20%且小于50%。 所得到的用于切削工具的高压相氮化硼基硬坚韧烧结体的耐磨性和耐崩裂性提高。
    • 4. 发明授权
    • High strength sintered impact having excellent resistance to cratering
    • 高强度烧结冲击具有优异的耐火蚀性
    • US06635593B1
    • 2003-10-21
    • US09913265
    • 2001-08-10
    • Satoru KukinoTomohiro FukayaJunichi ShiraishiTetsuo Nakai
    • Satoru KukinoTomohiro FukayaJunichi ShiraishiTetsuo Nakai
    • C04B355831
    • C04B35/5831Y10T407/27
    • A sintered material containing high-pressure phase-type boron nitride and a binder is provided. The high-pressure phase-type boron nitride is contained in an amount of from 50% to 78% by volume, and the balance is a binder phase. The binder phase comprises at least one selected from the group consisting of nitride, carbide, carbonitride, and boride of Ti, nitride, boride and oxide of Al, carbide and boride of W, nitride, carbide, carbonitride and boride of Co, and carbide and boride of Ni, or a mutual solid solution thereof. The binder phase forms a binder phase which is continuous in a sintered material texture. The weight of metal components Al, W, Co and Ni which are present as compounds in the sintered material is from 3% to 20% based on the sintered material. The sintered material is excellent in crater resistance and capable of realizing a long tool life, even under the condition that the temperature of the cutting edge becomes high and the impact is large, as in high-speed interrupted cutting of hardened steel where the cutting speed V becomes at least 150 m/min.
    • 提供含有高压相型氮化硼和粘合剂的烧结材料。 高压相型氮化硼的含量为50〜78体积%,余量为粘结相。 粘结相包括选自Ti,氮化物,硼化物和Al的氧化物的氮化物,碳化物,碳氮化物和硼化物中的至少一种,W,氮化物,碳化物,碳氮化物和Co的硼化物的碳化物和硼化物,以及碳化物 和Ni的硼化物或其相互固溶体。 粘结相形成在烧结材料结构中连续的粘结相。 烧结材料中作为化合物存在的金属成分Al,W,Co,Ni的重量相对于烧结体为3〜20%。 该烧结材料即使在切削刃的温度高,冲击大的条件下也能够实现长的刀具寿命,因为在切削速度高的淬火钢的高速切断切削中 V变为至少150m / min。
    • 7. 发明授权
    • Cubic boron nitride sintered body
    • 立方氮化硼烧结体
    • US06316094B1
    • 2001-11-13
    • US09357970
    • 1999-07-21
    • Tomohiro FukayaSatoru KukinoJunichi Shiraishi
    • Tomohiro FukayaSatoru KukinoJunichi Shiraishi
    • B24D300
    • C04B35/5831C22C26/00C22C2026/005Y10T428/25Y10T428/26Y10T428/2991Y10T428/2993
    • A cBN sintered body superior in chipping resistance. The cBN sintered body is a sintered body in which cBN particles are bonded through a bonding phase. The bonding phase has a two-dimensionally continuous structure. The bonding phase comprises at least one kind selected from the group consisting of (a) carbide, nitride, carbonitride, or boride of a 4a-, 5a-, or 6a-group transition metal in the periodic table; (b) nitride, boride, or oxide of Al; (c) at least one kind of carbide, nitride, carbonitride, and boride of Fe, Co, or Ni; and (d) a mutual solid solution of those. The percentage of cBN content is 45 to 70% in volume. The bonding phase has the thickness of which the average value is 1.5 &mgr;m or less and the standard deviation is 0.9 &mgr;m or less with the cBN particles having an average particle size of 2 to 6 &mgr;m inclusive. The bonding phase has the thickness of which the average value is 1.0 &mgr;m or less and the standard deviation is 0.7 &mgr;m or less with the cBN particles having an average particle size of not less than 0.01 &mgr;m and less than 2.0 &mgr;m.
    • 耐破碎性优异的cBN烧结体。 cBN烧结体是通过结合相结合cBN粒子的烧结体。 结合相具有二维连续结构。 键合相包含选自元素周期表中的(a)碳化物,氮化物,碳氮化物或硼化物中的至少一种,其中该元素是4a-,5a-或6a-基过渡金属; (b)Al的氮化物,硼化物或氧化物; (c)Fe,Co或Ni中的至少一种碳化物,氮化物,碳氮化物和硼化物; 和(d)这些的相互坚实的解决方案。 cBN含量的百分比为45〜70%。 结合相的平均值为1.5μm以下,标准偏差为0.9μm以下,cBN粒子的平均粒径为2〜6μm。 结合相的平均值为1.0μm以下,标准偏差为0.7μm以下,cBN粒子的平均粒径为0.01μm以上且小于2.0μm。
    • 8. 发明授权
    • Cutting tool made of A12O3-coated cBN-based sintered material
    • 由A12O3涂层的cBN型烧结材料制成的切削刀具
    • US06337152B1
    • 2002-01-08
    • US09492128
    • 2000-01-27
    • Satoru KukinoJunichi ShiraishiTetsuo Nakai
    • Satoru KukinoJunichi ShiraishiTetsuo Nakai
    • B32B3300
    • C04B41/009C04B41/5031C04B41/52Y10T428/24975Y10T428/265C04B35/5831
    • A cutting tool according to the present invention is coated with one or more Al2O3 layers on at least a part of the surface of a cBN-based sintered material substrate taking part in cutting. The sintered material substrate is made of cBN in an amount of from 20% to 99% by volume and Al2O3 having an average crystalline particle diameter of not more than 1 &mgr;m in an amount of from not less than 1.0% to less than 10% by volume. The Al2O3 layer has a thickness (d) of from 0.5 &mgr;m to 50 &mgr;m. The average crystalline particle diameter (s) of Al2O3 is from 0.01 &mgr;m to 4 &mgr;m if the thickness (d) of the Al2O3 layer is from 0.5 &mgr;m to 25 &mgr;m or from not less than 0.01 &mgr;m to not more than 10 &mgr;m if the thickness (d) of the Al2O3 layer is from more than 25 &mgr;m to 50 &mgr;m.
    • 根据本发明的切削工具在参与切削的cBN型烧结材料基材的至少一部分表面上涂覆有一种或多种Al 2 O 3层。 所述烧结体基板由体积为20〜99体积%的cBN,平均结晶粒径为1μm以下的Al 2 O 3,以不小于1.0%至小于10%的量由 卷。 Al 2 O 3层的厚度(d)为0.5〜50μm。 如果Al 2 O 3层的厚度(d)为0.5μm至25μm,则Al 2 O 3的平均结晶粒径为0.01μm至4μm,或者如果厚度为0.01μm至10μm以下,则Al 2 O 3的平均结晶粒径为0.01μm至4μm Al 2 O 3层的(d)为25μm〜50μm。