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    • 35. 发明授权
    • Alumina base substrate of recording head and process for the production
thereof
    • 记录头的氧化铝基底及其制造方法
    • US4598052A
    • 1986-07-01
    • US728223
    • 1985-04-29
    • Toshiaki WadaMitsuhiko FurukawaMitsuyoshi NaganoMichito MiyaharaShigeki Mori
    • Toshiaki WadaMitsuhiko FurukawaMitsuyoshi NaganoMichito MiyaharaShigeki Mori
    • C04B35/111G11B5/31H01F10/26H01F10/28C04B35/10C04B35/46C04B35/56
    • C04B35/111
    • An alumina base substrate material for recording heads, which comprises a densely sintered body consisting essentially of:per 100 parts by weight of a base component of 30 to 40% by weight of a titanium compound having TiO.sub.2 to (TiC+TiO.sub.2) percentage of 5 to 15% by weight and the balance being Al.sub.2 O.sub.3,components A, B and C, provided that the A to B ratio is within a hatched KLMN area in FIG. 1, in the following given parts by weight, andoxidic impurities in amounts of no higher than 0.2% by weight based on the total composition,said sintered body having an average crystal grain size of no higher than 1.3 microns, a porosity per area of no higher than 0.5%, a bending strength of at least 70 kg/cm.sup.2 and a hardness H.sub.R A of at least 93.0: whereincomponent A is at least one of spinels expressed by RO-Al.sub.2 O.sub.3, where R is at least one of Mg, Mn, Ni and Co, in an amount of 2.0 to 17.5 parts by weight,component B is 0.2 to 2.0 parts by weight of ZrO.sub.2, andComponent C is 0.05 to 2.0 parts by weight of Y.sub.2 O.sub.3.
    • 用于记录头的氧化铝基底材料,其包含致密烧结体,其基本上由以下组成:每100重量份的基础组分为30至40重量%的具有TiO 2至(TiC + TiO 2)百分比为5的钛化合物 至15重量%,余量为Al 2 O 3,成分A,B和C,条件是A比B在图1中的阴影KLMN区域内。 1,以下给出的重量份数和相对于总组成不超过0.2重量%的氧化物杂质,所述烧结体的平均晶粒尺寸不大于1.3微米,每个面积的孔隙率 不大于0.5%,弯曲强度至少为70kg / cm2,硬度HRA为93.0以上:其中组分A为由RO-Al2O3表示的至少一种尖晶石,其中R为Mg,Mn中的至少一种 ,Ni和Co的量为2.0〜17.5重量份,B成分为ZrO 2 0.2〜2.0重量份,C 2为0.05〜2.0重量份。
    • 40. 发明授权
    • Gas sensor
    • 气体传感器
    • US08656756B2
    • 2014-02-25
    • US12253265
    • 2008-10-17
    • Masaki MizutaniShigeki Mori
    • Masaki MizutaniShigeki Mori
    • G01N7/00
    • G01N27/4077
    • A gas sensor including a metal shell; a detection element main body held by the metal shell; a porous protection layer coated on a leading end portion of the detection element main body; and a protector including a side wall surrounding an element protruding portion of the detection element main body protruding from a leading end of the metal shell. The side wall has introduction holes formed therein which allow gas to be introduced. The porous protection layer includes a first portion; and a second portion provided on a base end side with respect to the first portion and having a progressively reduced thickness in a direction toward a leading end of the detection element. The second portion is disposed closer to the base end of the detection element than the introduction holes in the axial direction.
    • 一种包括金属壳的气体传感器; 由所述金属壳保持的检测元件主体; 涂覆在检测元件主体的前端部的多孔保护层; 以及保护器,包括围绕从金属壳的前端突出的检测元件主体的元件突出部分的侧壁。 侧壁上形成有引入气体的引入孔。 多孔保护层包括第一部分; 以及第二部分,其相对于所述第一部分设置在基端侧,并且在朝向所述检测元件的前端的方向上具有逐渐减小的厚度。 第二部分比轴向上的导入孔更靠近检测元件的基端。