摘要:
This invention provides a piezoelectric ceramic composition having large field-induced strain under high compressive stress, small temperature dependence of strain, and high energy conversion efficiency even at high temperatures. The composition is represented by; (Pb.sub.1-(3X/2)-(U/2) La.sub.X)((Zr.sub.Y Ti.sub.1-Y).sub.1-Z-U (Mg.sub.1/3 Nb.sub.2/3).sub.Z Nb.sub.U)O.sub.3 where 0
摘要:
A piezoelectric material includes a PZT ceramic, and a noble metal component. The noble metal component is added to the PZT ceramic in an amount of 0.35 parts by volume or more with respect to 100 parts by volume of the PZT ceramic, and is at least one element selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt and Au, or is an alloy of silver (Ag) and the noble metal element. A piezoelectric element includes a pair of external electrodes, at least a pair of piezoelectric layers, and a conductive layer. The piezoelectric layers are formed of the PZT ceramic, and are disposed between the external electrodes. The conductive layer is formed of the noble metal component, and is insulated from the external electrodes. The piezoelectric layers and the conductive layer are formed lamellarly, and are laminated alternately in a direction connecting the external electrodes.
摘要:
A joined assembly of a ceramic member and a metallic member having a hollow cylindrical portion which is open at one end thereof, and closed at the other end, or bottom thereof. The ceramic member has a portion fitted in the cylindrical portion in such a way that any stress acting axially upon the surface of the ceramic member may be reduced at least in the vicinity of the open end of the cylindrical portion. The two members are joined together by shrinkage fitting with at least one brazing material filling the clearance between the two members, or by chemical bonding.
摘要:
A sensor material for measuring physical parameters capable of configuring a sensor capable of directly measuring a high value of physical parameters such as high stress or high pressure without employing a pressure resistance container. The sensor material for measuring static and dynamic physical parameters includes a matrix made of an electrically insulating ceramic material, and piezoresistance materials which are dispersed in the matrix so as to be electrically continuous to each other.
摘要:
A dynamic quantity sensor device capable of measuring a dynamic quantity at a high precision and securing insulation of a pressure sensing body easily. This dynamic quantity sensor includes a pressure sensing body composed of composite ceramics in which a material having a pressure resistance effect is dispersed on a matrix made of an electrical insulation ceramic material and a pressure receiving body having an electrical insulation characteristic and disposed on a pressure receiving surface of the pressure receiving body, wherein the pressure sensing body and the pressure receiving body are integrated with each other.
摘要:
A piezoelectric ceramic composition, having a tetragonal perovskite structure and represented by a general formula PbaSrb(ZrcTidSbeMnf)O3 wherein Pb and Sr are assumed to occupy A site, Zr, Ti, Sb and Mn are assumed to occupy B site, and a molar ratio of A site/B site atoms of (a+b)/(c+d+e+f) is more than 1.00 to 1.03, preferably 0.01 to 0.03.
摘要翻译:假设具有四方钙钛矿结构并由通式PbaSrb(ZrcTidSbeMnf)O3表示)的压电陶瓷组合物,其中假定Pb和Sr占据A位,Zr,Ti,Sb和Mn占B位,摩尔比 (a + b)/(c + d + e + f)的A位点/ B位原子大于1.00〜1.03,优选为0.01〜0.03。
摘要:
A harness protecting structure is provided for a vehicular horn for a vehicle, in which the vehicle has a grille defining an air intake opening in a front part of the vehicle, a radiator located posterior to the grille, and the horn being disposed in front of the radiator and facing the opening of the grille. The grille is provided with a peripheral wall, the peripheral wall extending posterior to the lower and side edge of the grill, and a part of the peripheral wall extending across and anterior to a peripheral region of the horn so as to form a protective surface. The harness of the horn is laid from the outside of the region of the horn behind the protective surface.
摘要:
A harness protecting structure is provided for a vehicular horn for a vehicle, in which the vehicle has a grille defining an air intake opening in a front part of the vehicle, a radiator located posterior to the grille, and the horn being disposed in front of the radiator and facing the opening of the grille. The grille is provided with a peripheral wall, the peripheral wall extending posterior to the lower and side edge of the grill, and a part of the peripheral wall extending across and anterior to a peripheral region of the horn so as to form a protective surface. The harness of the horn is laid from the outside of the region of the horn behind the protective surface.
摘要:
A pyrazolo[1,5-a]pyridine derivative represented by formula (I) and salt thereof exhibit excellent MAPKAP-K2 inhibitory activity. Accordingly, medicines comprising this compound as an active ingredient are expected to be valuable for treating or preventing diseases mediated by MAPKAP-K2 such as inflammatory injury, autoimmune diseases, asteropathia destruens, cancer and/or growth of tumor.
摘要:
A noble metallic firing tip includes a protruding portion which is formed partly on its outer circumferential surface so as to protrude in the direction substantially normal to the axis of a center electrode. The protruding portion is disposed in confronting relationship via a discharge gap with a distal end of an opposed portion of a ground electrode far from its leg portion.