Ikemi
Satoshi Ikemi, Tochigi JP
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20150275343 | IRON-BASE SINTERED ALLOY MATERIAL FOR VALVE SEAT INSERT AND METHOD FOR MANUFACTURING THE SAME - An iron-base sintered alloy material includes a matrix phase, Co base inter-metallic compound particles having hardness of 600 to 1200 HV, carbide-type particles having hardness of 400 to 700 HV, and optionally solid-lubricant particles, the particles being dispersed in the matrix phase. A matrix part including the matrix phase and the two kinds of hard-particles contains 0.3 to 1.5% by mass of C, and 10 to 50% by mass of one or more kinds selected from Si, Mo, Cr, Ni, Co, Mn, S, N, V, Ca, F, Mg, and O, the balance being Fe and unavoidable impurities. By dispersing, in the matrix phase, the Co base inter-metallic compound particles having high hardness, and the carbide-type particles having low hardness and low aggressiveness to mated material and increasing mechanical strength, wear-resistance can be improved with low aggressiveness to mated material and high radial crushing strength (350 MPa or more). | 10-01-2015 |
Shinichiro Ikemi, Gunma JP
Patent application number | Description | Published |
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20080226927 | DIELECTRIC CERAMICS AND MULTILAYER CERAMIC CAPACITOR - Dielectric ceramics and a multi-layer ceramic capacitor with internal Ni electrodes having a more improved property showing the reliability such as high accelerated life time than usual, a temperature characteristic of the permittivity satisfying the X6S property, and having a permittivity of from 800 to 1800, wherein the dielectric ceramics comprise a main ingredient within a range: | 09-18-2008 |
20080305944 | DIELECTRIC CERAMICS AND MANUFACTURING METHOD THEREOF, AS WELL AS MULTILAYER CERAMIC CAPACITOR - Dielectric ceramics capable of decreasing the displacement causing ringing and a multi-layer ceramic capacitor capable of decreasing occurrence of ringing in which the dielectric ceramics comprise a solid solution represented by: | 12-11-2008 |
Shinichiro Ikemi, Takasaki-Shi JP
Patent application number | Description | Published |
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20140368090 | PIEZOELECTRIC DEVICE AND PIEZOELECTRIC CERAMIC COMPOSITION - A piezoelectric device is provided with: a piezoelectric ceramic layer that is obtained by firing a piezoelectric ceramic composition which contains a perovskite composition and an Ag component; and a conductor layer that sandwiches the piezoelectric ceramic layer, wherein Ag is segregated in voids in a sintered body of the perovskite composition in the piezoelectric ceramic layer. The piezoelectric ceramic composition preferably contains a perovskite composition which is represented by (Pba.Rex){Zr | 12-18-2014 |