Abstract: A method for mounting a chip component includes the steps of: flattening a solder deposit adhering onto a land terminal of a circuit board; forming grooves on the solder deposit simultaneously with or after flattening the solder deposit; coating the solder deposit with a flux; and placing a chip component on the solder deposit with the flux interposed therebetween.

Abstract: A method for manufacturing spherical ceramic powder is provided. The method includes essentially a spray drying step and a sintering step. In the spray drying step, a spray nozzle is used to spray slurry containing powdered raw material consisting essentially of ceramic ingredients to form liquid droplets, and liquid contents in the liquid droplets are heated and removed to obtain ceramic granular powder. In the sintering step, the ceramic granular powder is sintered to form spherical ceramic powder. The method provides ceramic powder having a mean particle size of about 1-50 ?m and a sphericity of about 0.8 or higher, which is suited for mixing with resin material to form a compound. The ceramic powder has high dispersant and filling properties against the resin material.

Abstract: The present invention provides a production method of spherical oxide powder which includes a feeding step in which a granular powder composed of an oxide composition is fed into a combustion flame together with a carrier gas; a melting step in which said fed granular powder is melted in said combustion flame to obtain a melt; and a solidifying step in which said melt is solidified by being moved and placed outside said combustion flame.

Abstract: A method for mounting a chip component includes the steps of: flattening a solder deposit adhering onto a land terminal of a circuit board; forming grooves on the solder deposit simultaneously with or after flattening the solder deposit; coating the solder deposit with a flux; and placing a chip component on the solder deposit with the flux interposed therebetween.

Abstract: For the purpose of preventing the degradation of the piezoelectric strain properties when Cu is used for internal electrodes, there is provided a piezoelectric ceramic composition including: a composite oxide, as a main constituent thereof, represented by (Pba-bMeb) [(Zn1/3Nb2/3)xTiyZrz]O3 with the proviso that 0.96?a?1.03, 0?b?0.1, 0.05?x?0.15, 0.25?y?0.5, 0.35?z?0.6, and x+y+z=1, and Me represents at least one selected from Sr, Ca and Ba; and at least one selected from Co, Mg, Ni, Cr and Ga as a first additive to the main constituent in a content of 0.5% by mass or less (not inclusive of 0) in terms of oxide, wherein an electrode made of Cu is to be disposed on the piezoelectric ceramic composition.

Abstract: The present invention provides a production method of spherical oxide powder which includes a feeding step in which a granular powder composed of an oxide composition is fed into a combustion flame together with a carrier gas; a melting step in which said fed granular powder is melted in said combustion flame to obtain a melt; and a solidifying step in which said melt is solidified by being moved and placed outside said combustion flame.

Abstract: The disclosed invention relates to Bi2O3—ZnO—Ta2O5 dielectric compounds and compositions, and to their manufacture. The compounds of the invention have outstanding K, Q, TCF, and TCC. Examples of these properties include a K of between 58 and 80, a low dielectric loss (tan &dgr;<0.003), and a TCC<30 ppm/° C. Ceramic compositions produced include those represented by Bi2(ZnTa2)xO6x+3 where 0.57≦x≦1.0, Bi2(ZnTay)2/3O((5y+11)/3) where 1.0≦y≦3.0, as well as by Bi2(ZnTay)2/3O((5y+11)/3) where 1.0≦y≦3.0 with the proviso that y is not=2.0. Solid solutions of compounds defined by the formula r(Bi2(Zn1/3Ta2/3)2O7)-(1−r)(Bi3/2Zn2/3)(Zn1/2Ta3/2)O7)) where 0<r<1 also are produced.

Abstract: A method for manufacturing spherical ceramic powder is provided. The method includes essentially a spray drying step and a sintering step. In the spray drying step, a spray nozzle is used to spray slurry containing powdered raw material consisting essentially of ceramic ingredients to form liquid droplets, and liquid contents in the liquid droplets are heated and removed to obtain ceramic granular powder. In the sintering step, the ceramic granular powder is sintered to form spherical ceramic powder. The method provides ceramic powder having a mean particle size of about 1-50 &mgr;m and a sphericity of about 0.8 or higher, which is suited for mixing with resin material to form a compound. The ceramic powder has high dispersant and filling properties against the resin material.

Abstract: The disclosed invention relates to Bi2O3—ZnO—Ta2O5 dielectric compounds and compositions, and to their manufacture. The compounds of the invention have outstanding K, Q, TCF, and TCC. Examples of these properties include a K of between 58 and 80, a low dielectric loss (tan &dgr;<0.003), and a TCC<30 ppm/° C. Ceramic compositions produced include those represented by Bi2(ZnTa2)xO6x+3 where 0.57≦x≦1.0, Bi2(ZnTay)⅔O((5y+11)/3) where 1.0≦y≦3.0, as well as by Bi2(ZnTay)⅔O((5y+11)/3) where 1.0≦y≦3.0 with the proviso that y is not=2.0. Solid solutions of compounds defined by the formula r(Bi2(Zn⅓Ta⅔)2O7)-(1−r)(Bi{fraction (3/2)}Zn⅔)(Zn½Ta{fraction (3/2)})O7))where 0<r<1 also are produced.

Abstract: In a multi-functional multilayer device including a body (10) having a varistor section (2) and a capacitor section (3) stacked and integrated therewith, the adhesion between a varistor layer and a dielectric layer is improved when the varistor layer (22) contains zinc oxide as a main component and at least one lanthanide oxide as an auxiliary component, and the dielectric layer (32) contains titanium oxide or lanthanum/titanium oxide as a main component. The device experiences little warpage upon firing when glass is added to the dielectric layer. A high resistivity intermediate layer (5) disposed between the varistor and capacitor sections (2 and 3) prevents the deterioration or loss of varistor and capacitor properties by interdiffusion of elements between the varistor and capacitor sections.

Abstract: A semiconductive ceramic composition capable of permitting its resistance-temperature characteristics and resistance to be controlled as desired and a firing temperature of the composition to be lowered to a degree sufficient to facilitate the mass-production at a low cost. The composition contains a main component consisting of SrO, PbO and TiO.sub.2 and is subjected to firing in an oxidizing atmosphere. The composition may contain at least one of SiO.sub.2 and M as a minor component. A variation in amount of the main and minor components permits characteristics and properties of the composition to be varied as desired.