公开(公告)号：US4902651A

公开(公告)日：1990-02-20

申请号：US021227

申请日：1987-03-03

申请人： Toshiaki Wada ,  Mitsuhiko Furukawa ,  Masaharu Shiroyama ,  Mitsuyoshi Nagano ,  Michito Miyahara ,  Takashi Kitahira ,  Shigeki Mohri

发明人： Toshiaki Wada ,  Mitsuhiko Furukawa ,  Masaharu Shiroyama ,  Mitsuyoshi Nagano ,  Michito Miyahara ,  Takashi Kitahira ,  Shigeki Mohri

IPC分类号： C04B35/111 ,  C04B35/56

CPC分类号： C04B35/6455 ,  C04B35/111 ,  C04B35/5611

摘要： A material for thin film magnetic head slider particularly suited for high recording, which is obtained by sintering a mixture consisting essentially of:5 to 45% by weight of titanium carbide component;0.2 to 10% by weight of zirconium oxide;0.05 to 2% by weight of oxide of yttrium;0.2 to 25% by weight of aluminum nitride; and the balance of Al.sub.2 O.sub.3 component substituted with 0.5 to 8% by weight being at least one machinability agent selected from the group consisting of oxides of Mg, Ca, B, Ni and Cr and complex oxides thereof.

摘要翻译： 一种特别适用于高记录的薄膜磁头滑块的材料，其通过烧结基本上由以下组成的混合物获得：混合物：5-45重量％的碳化钛组分; 0.2〜10重量％的氧化锆; 0.05〜2重量％的钇氧化物; 0.2〜25重量％的氮化铝; 以0.5〜8重量％取代的Al 2 O 3成分的余量为选自Mg，Ca，B，Ni，Cr的氧化物及其复合氧化物中的至少1种切削性试剂。

公开(公告)号：US4814915A

公开(公告)日：1989-03-21

申请号：US58529

申请日：1987-05-26

申请人： Toshiaki Wada ,  Mitsuhiko Furukawa ,  Masaharu Shiroyama ,  Michito Miyahara ,  Shigeki Mohri ,  Mitsuyoshi Nagano

发明人： Toshiaki Wada ,  Mitsuhiko Furukawa ,  Masaharu Shiroyama ,  Michito Miyahara ,  Shigeki Mohri ,  Mitsuyoshi Nagano

IPC分类号： C04B35/48 ,  C04B35/488 ,  C04B35/645 ,  G11B5/10 ,  G11B5/105 ,  G11B5/127 ,  G11B5/31 ,  G11B15/64

CPC分类号： G11B5/10 ,  C04B35/4885 ,  C04B35/645 ,  G11B5/3106

摘要： A magnetic head slider and a material for it which comprises a sintered body obtained by sintering a raw material powder composed of 65 to 90% by weight of ZrO.sub.2 component containing therein a stabilizer and the balance of Al.sub.2 O.sub.3 component, 2% by weight or below of which has been substituted with a binder. The stabilizer is Y.sub.2 O.sub.3, MgO or CeO and the binder is Y.sub.2 O.sub.3 or MgO.

摘要翻译： 一种磁头滑块及其材料，其特征在于，包括烧结体，该烧结体通过将含有65〜90重量％的含有稳定剂的ZrO 2成分和余量的Al 2 O 3成分，2重量％以下的原料粉末 其已被粘合剂取代。 稳定剂为Y2O3，MgO或CeO，粘合剂为Y2O3或MgO。

公开(公告)号：US4796127A

公开(公告)日：1989-01-03

申请号：US143245

申请日：1988-01-11

申请人： Toshiaki Wada ,  Mitsuhiko Furukawa ,  Masaharu Shiroyama ,  Michito Miyahara ,  Mitsuyoshi Nagano ,  Shigeki Mohri

发明人： Toshiaki Wada ,  Mitsuhiko Furukawa ,  Masaharu Shiroyama ,  Michito Miyahara ,  Mitsuyoshi Nagano ,  Shigeki Mohri

IPC分类号： G11B5/127 ,  C04B35/10 ,  G11B5/10 ,  G11B5/31 ,  G11B5/60 ,  G11B5/73 ,  G11B5/733 ,  G11B5/82

CPC分类号： G11B5/3106 ,  G11B5/10 ,  G11B5/6005

摘要： A recording head slider comprises a slider body having a fluid bearing surface on a primary surface thereof and at least one transducer on at least one side of the slider body, the slider body being made of a sintered body produced by sintering a base composition consisting essentially of 10-40 percent by volume of silicon carbide and the balance being alumina. The base composition may comprise 0.2-10 percent by weight of sintering aids MgO, Y.sub.2 O.sub.3, ZrO.sub.2, CaO, Er.sub.2 O.sub.3 and Cr.sub.2 O.sub.3. This slider has high precision machinability and compatibility with recording media.

摘要翻译： 记录头滑块包括滑块体，该主体在其主表面上具有流体支承表面，并且在滑块体的至少一侧具有至少一个换能器，滑块体由烧结体制成，所述烧结体基本上由 为10-40体积％的碳化硅，余量为氧化铝。 基础组合物可以包含0.2-10重量％的烧结助剂MgO，Y 2 O 3，ZrO 2，CaO，Er 2 O 3和Cr 2 O 3。 该滑块具有高精度的机械加工性和与记录介质的兼容性。

公开(公告)号：US4430440A

公开(公告)日：1984-02-07

申请号：US383329

申请日：1982-05-28

申请人： Toshiaki Wada ,  Mitsuhiko Furukawa ,  Michito Miyahara ,  Masaharu Shiroyama ,  Kiyohito Misumi ,  Takashi Kitahira

发明人： Toshiaki Wada ,  Mitsuhiko Furukawa ,  Michito Miyahara ,  Masaharu Shiroyama ,  Kiyohito Misumi ,  Takashi Kitahira

IPC分类号： G11B21/21 ,  C04B35/10 ,  C04B35/111 ,  C04B35/46 ,  C04B35/478 ,  G11B5/10 ,  G11B5/127 ,  G11B5/60 ,  C04B35/49 ,  B23B27/14

CPC分类号： C04B35/111 ,  C04B35/478 ,  G11B5/10 ,  G11B5/102 ,  Y10S428/90 ,  Y10T428/1164

摘要： A material for magnetic head sliders comprises a mixed powder consisting of 40 to 80% by weight of Al.sub.2 O.sub.3 and 20 to 60% by weight of TiO.sub.2, and further contains, per 100 parts by weight of the Al.sub.2 O.sub.3 and TiO.sub.2 mixture, 0.5 to 5 parts by weight of at least one of CaO, MgO and Y.sub.2 O.sub.3, and 0.5 to 10 parts by weight of ZrO.sub.2.

摘要翻译： 用于磁头滑块的材料包括由40至80重量％的Al 2 O 3和20至60重量％的TiO 2组成的混合粉末，并且还每100重量份的Al 2 O 3和TiO 2混合物含有0.5至5重量份 的CaO，MgO和Y 2 O 3中的至少一种和0.5〜10重量份的ZrO 2。

公开(公告)号：US4859638A

公开(公告)日：1989-08-22

申请号：US155851

申请日：1988-02-16

申请人： Toshiaki Wada ,  Yoshiaki Katsuyama ,  Mitsuhiko Furukawa ,  Takashi Kitahira ,  Michito Miyahara ,  Kiyohito Misumi ,  Masaharu Shiroyama

发明人： Toshiaki Wada ,  Yoshiaki Katsuyama ,  Mitsuhiko Furukawa ,  Takashi Kitahira ,  Michito Miyahara ,  Kiyohito Misumi ,  Masaharu Shiroyama

IPC分类号： C04B35/565 ,  C04B35/111 ,  C04B35/575 ,  C22C29/02 ,  G11B5/10 ,  G11B5/31 ,  G11B5/60 ,  G11B21/21

CPC分类号： G11B5/10 ,  C04B35/111 ,  C04B35/575 ,  G11B5/3106

摘要： A sintered material for recording/reading (particularly magnetic) head slider is produced by:preparing a powdery mixture which comprises 0.5 to 6.0% by weight of at least one component selected from the component group A consisting of the following elements and compounds thereof, a garnet type compound consisting essentially of erbium oxide and aluminum oxide in amounts of 2 to 12% by weight and 0 (exclusive) to 2 (inclusive) % by weight based on the total composition, respectively, and expressed by the formula Er.sub.3 (Al,Er).sub.2 (AlO.sub.4).sub.3 through (Er,Al).sub.3 Al.sub.2 (AlO.sub.4).sub.3, and the balance being silicon carbide powder:the elements for the component group A being Ti, V, Cr, Mn, Mg, Y, Zr, Nb, Mo, Ba, La, Ce, Gd, Hf, Ta, W, Th, and Cs; andsintering the resultant mass under the application of a high pressure.Further sintering aids of Be, BeO, B and B.sub.4 C may be present. For the garnet type compound, erbium oxide may be used, preferably in combination with alumina.

摘要翻译： 用于记录/读取（特别是磁性）磁头滑块的烧结材料通过以下方法制备：制备粉末混合物，其包含0.5至6.0重量％的至少一种选自由以下元素组成的组分A和其化合物的组分， 基于总组合物，基本上由2〜12重量％的氧化铒和氧化铝组成的石榴石型化合物分别为0（排除）〜2（含）％，并由式Er 3（Al， Er）2（AlO4）3〜（Er，Al）3Al2（AlO4）3，余量为碳化硅粉末：组分A的元素为Ti，V，Cr，Mn，Mg，Y，Zr，Nb ，Mo，Ba，La，Ce，Gd，Hf，Ta，W，Th和Cs; 并在高压下进行烧结。 可能存在Be，BeO，B和B4C的其他烧结助剂。 对于石榴石型化合物，可以使用铒氧化物，优选与氧化铝组合。

公开(公告)号：US4582812A

公开(公告)日：1986-04-15

申请号：US639216

申请日：1984-08-09

申请人： Mitsuhiko Furukawa ,  Michito Miyahara ,  Takashi Kitahira ,  Kiyohito Misumi ,  Masaharu Shiroyama ,  Toshiaki Wada

发明人： Mitsuhiko Furukawa ,  Michito Miyahara ,  Takashi Kitahira ,  Kiyohito Misumi ,  Masaharu Shiroyama ,  Toshiaki Wada

IPC分类号： C04B35/111 ,  G11B5/10 ,  G11B5/255 ,  G11B5/31 ,  C04B35/56 ,  C04B35/10 ,  G11B5/187

CPC分类号： C04B35/111 ,  G11B5/10 ,  G11B5/255 ,  G11B5/3106

摘要： Aluminum oxide substrate material for magnetic heads having improved toughness consisting essentially of: (1) 100 parts by weight, consisting of aluminum oxide and 30 to 50 parts by weight of (TiC+TiO.sub.2), and that provided TiO.sub.2 /(TiC+TiO.sub.2).times.100=5 to 15, (2) 0.5 to 5 parts by weight of addition of free cutting comprising at least one from the group of MgO, NiO, Cr.sub.2 O.sub.3 and ZrO.sub.2, and (3) 0.05 to 2 parts by weight of Y.sub.2 O.sub.3.The method of hot-forming aluminum oxide substrate material for magnetic head having improved sinterability consisting of (a) preparing a green compact by molding a raw material mixture which contains: (1) 100 parts by weight, consisting of aluminum oxide and 30 to 50 percent by weight of (TiC+TiO.sub.2), and that provided TiO.sub.2 /(TiC+TiO.sub.2).times.100=5 to 15, (2) 0.5 to 5 parts by weight of machinability agents comprising at least one from the group of MgO, NiO, Cr.sub.2 O.sub.3 and ZrO.sub.2, and (3) 0.05 to 2 parts by weight of Y.sub.2 O.sub.3 (b) optionally presintering said green compacts; and effecting sintering.

摘要翻译： 具有改进的韧性的用于磁头的氧化铝基材材料基本上由以下组成：（1）100重量份，由氧化铝和30至50重量份的（TiC + TiO 2）组成，并且提供TiO 2 /（TiC + TiO 2） x100 = 5〜15，（2）0.5〜5重量份的包含MgO，NiO，Cr 2 O 3和ZrO 2中的至少一种的自由切割，和（3）0.05〜2重量份的Y 2 O 3。 一种热成型氧化铝基材的方法，其具有改善的烧结性，其包括（a）通过模制原料混合物制备生坯，所述原料混合物包含：（1）100重量份，由氧化铝和30至50 （TiC + TiO 2）重量百分比，TiO 2 /（TiC + TiO 2）x 100 = 5〜15，（2）0.5〜5重量份的可加工性试剂，其包含MgO，NiO， Cr2O3和ZrO2，以及（3）0.05-2重量份的Y2O3（b）任选地预烧结所述生坯; 并进行烧结。

公开(公告)号：US5302560A

公开(公告)日：1994-04-12

申请号：US817976

申请日：1992-01-08

申请人： Toshiaki Wada ,  Yoshiaki Katsuyama ,  Mitsuhiko Furukawa ,  Takashi Kitahira ,  Michito Miyahara ,  Kiyohito Misumi ,  Masaharu Shiroyama

发明人： Toshiaki Wada ,  Yoshiaki Katsuyama ,  Mitsuhiko Furukawa ,  Takashi Kitahira ,  Michito Miyahara ,  Kiyohito Misumi ,  Masaharu Shiroyama

IPC分类号： C04B35/565 ,  C04B35/111 ,  C04B35/575 ,  C22C29/02 ,  G11B5/10 ,  G11B5/31 ,  G11B5/60 ,  G11B21/21 ,  C04B35/56

CPC分类号： G11B5/10 ,  C04B35/111 ,  C04B35/575 ,  G11B5/3106

摘要： A sintered material for recording/reading (particularly magnetic) head slider is produced by:preparing a powdery mixture which comprises 0.5 to 6.0% by weight of at least one component selected from the component group A consisting of the following elements and compounds thereof, a garnet type compound consisting essentially of erbium oxide and aluminum oxide in amounts of 2 to 12% by weight and 0 (exclusive) to 2 (inclusive) % by weight based on the total composition, respectively, and expressed by the formula Er.sub.3 (Al,Er).sub.2 (AlO.sub.4).sub.3 through (Er, Al).sub.3 Al.sub.2 (AlO.sub.4).sub.3, and the balance being silicon carbide powder:the elements for the component group A being Ti, V, Cr, Mn, Mg, Y, Zr, Nb, Mo, Ba, La, Ce, Gd, Hf, Ta, W, Th, and Cs; andsintering the resultant mass under the application of a high pressure.Further sintering aids of Be, BeO, B and B.sub.4 C may be present. For the garnet type compound, erbium oxide may be used, preferably in combination with alumina.

摘要翻译： 用于记录/读取（特别是磁性）磁头滑块的烧结材料通过以下方法制备：制备粉末混合物，其包含0.5至6.0重量％的至少一种选自由以下元素组成的组分A和其化合物的组分， 基于总组合物，基本上由2〜12重量％的氧化铒和氧化铝组成的石榴石型化合物分别为0（排除）〜2（含）％，并由式Er 3（Al， Er）2（AlO4）3〜（Er，Al）3Al2（AlO4）3，余量为碳化硅粉末：组分A的元素为Ti，V，Cr，Mn，Mg，Y，Zr，Nb ，Mo，Ba，La，Ce，Gd，Hf，Ta，W，Th和Cs; 并在高压下进行烧结。 可能存在Be，BeO，B和B4C的其他烧结助剂。 对于石榴石型化合物，可以使用铒氧化物，优选与氧化铝组合。

公开(公告)号：US4438213A

公开(公告)日：1984-03-20

申请号：US413311

申请日：1982-08-31

申请人： Mitsuhiki Furukawa ,  Michito Miyahara ,  Takashi Kitahira ,  Kiyohito Misumi ,  Masaharu Shiroyama ,  Toshiaki Wada

发明人： Mitsuhiki Furukawa ,  Michito Miyahara ,  Takashi Kitahira ,  Kiyohito Misumi ,  Masaharu Shiroyama ,  Toshiaki Wada

IPC分类号： G11B5/60 ,  C04B35/565 ,  C04B35/573 ,  G11B5/10 ,  G11B5/31 ,  G11B17/32 ,  G11B21/21 ,  C04B35/56 ,  C04B35/58

CPC分类号： G11B5/10 ,  C04B35/573 ,  G11B5/3106

摘要： Magnetic head slider material consisting of 5.about.10 percent by weight of silicon, 1.3.about.7.8 percent by weight of tungsten silicide and essentially balanced silicon carbide. And it is method for producing said magnetic head slider material that at the time of which the mixed powder consisting of silicon carbide, carbon and tungsten is sintered, cellulose is also mixed with said mixed powder and sintered together at the same time. And then fibrous micropores are caused to the sintered body by the above-described sintering, after that molten metallic silicon infiltrated into fibrous micropores.

摘要翻译： 磁头滑块材料由5％10％（重量）硅组成，1.3％（重量比）为硅化钨7.8％重量和基本平衡的碳化硅。 而且，制造所述磁头滑块材料的方法是将由碳化硅，碳和钨组成的混合粉末烧结，纤维素也与所述混合粉末混合并同时烧结在一起。 然后通过上述烧结对烧结体产生纤维状微孔，之后熔融的金属硅渗透入纤维微孔中。

公开(公告)号：US5093290A

公开(公告)日：1992-03-03

申请号：US465198

申请日：1990-03-02

申请人： Mitsuhiko Furukawa ,  Masaharu Shiroyama ,  Mitsuyoshi Nagano ,  Yasumi Takano

发明人： Mitsuhiko Furukawa ,  Masaharu Shiroyama ,  Mitsuyoshi Nagano ,  Yasumi Takano

IPC分类号： C04B35/584 ,  C04B35/593 ,  C04B35/599

CPC分类号： C04B35/593

摘要： The deterioration of strength at high temperature of Si.sub.3 N.sub.4 --Y.sub.2 O.sub.3 --AlN series silicon nitride-type sintered bodies is reduced by employing Y.sub.2 O.sub.3 --MgO--AlN series as a sintering aid wherein the stoichiometrical ratio of Y, Mg and Al in the sintered body is controlled to a specific range, thereby decreasing the glass phase to decrease deterioration of strength at high temperatures. Assuming Y as A.sub.1 mol, Mg as B.sub.1 mol and A.sub.1 as C.sub.1 mol based on one mol of Si.sub.3 N.sub.4 in the sintered body, the specific range, wherein each of A.sub.1, B.sub.1 and C.sub.1 is not less than 0, satisifies the conditions: ##EQU1## and the crystal phase of Si.sub.3 N.sub.4 consisting of an .alpha.-Si.sub.3 N.sub.4 phase in which a part of Si.sub.3 N.sub.4 is replaced by Y, Mg, O and Al, and a .beta.-Si.sub.3 N.sub.4 phase in which a part of Si.sub.3 N.sub.4 is replaced by Al and O, and a balance of a binding glass phase comprising Si, Al, O, N, Y and MG, wherein the ratio between the .alpha.-Si.sub.3 N.sub.4 phase and .beta.-Si.sub.3 N.sub.4 phase is defined as: ##EQU2##

摘要翻译： PCT No.PCT / JP89 / 00687。 371日期1990年3月2日 102（e）1990年3月2日PCT PCT 1989年7月7日PCT公布。 公开号WO90 / 00531 1990年1月25日，Si3N4-Y2O3-AlN系氮化硅型烧结体的高温强度降低，采用Y2O3-MgO-AlN系作为烧结助剂，其中Y，Mg， 将烧结体中的Al控制在特定范围，从而降低玻璃相以降低高温下的强度劣化。 假定Y为A1摩尔，Mg为B1摩尔，A1为1摩尔，相对于烧结体中的1摩尔Si 3 N 4，其特征在于，A1，B1，C1分别为0以上，满足条件：-0.03

公开(公告)号：US5432016A

公开(公告)日：1995-07-11

申请号：US713368

申请日：1994-06-11

申请人： Toshiaki Wada ,  Seiichi Hirao ,  Toyoshige Sasaki ,  Masaharu Shiroyama ,  Mitsuhiko Furukawa

发明人： Toshiaki Wada ,  Seiichi Hirao ,  Toyoshige Sasaki ,  Masaharu Shiroyama ,  Mitsuhiko Furukawa

IPC分类号： C04B35/48 ,  G11B5/10 ,  G11B5/127 ,  G11B5/31 ,  G11B5/60 ,  G11B15/60 ,  B32B19/00

CPC分类号： G11B5/3106 ,  G11B15/60 ,  G11B5/10 ,  Y10S428/90 ,  Y10T428/1164

摘要： A material for a magnetic head slider consists essentially of 0.1 to 20.0 vol % of at least one of oxides the group Va elements of the International Periodic Table (Ta, Nb, V) and 80.0 to 99.9 vol % of stabilized cubic ZrO.sub.2 containing a stabilizer (Y.sub.2 O.sub.3, MgO, CeO.sub.2). It has improved precision machinability, machining efficiency, high strength, densified structure, affinity with the recording medium or lubricity, besides wear resistance. It may be machined precisely into a thin film magnetic head slider with a reduced amount of chipping.

摘要翻译： 用于磁头滑动器的材料基本上由0.1至20.0体积％的国际周期表（Ta，Nb，V）的Va族元素和80.0至99.9vol％的稳定的立方ZrO 2的氧化物中的至少一种含有稳定剂 （Y 2 O 3，MgO，CeO 2）。 具有提高的精密加工性，机加工效率，高强度，致密结构，与记录介质的亲和性或润滑性，还具有耐磨性。 它可以精确地加工成具有减少的切屑量的薄膜磁头滑块。