Tanaka Kikinzoku Kogyo K.k.

Nihon Dempa Kogyo Co., Ltd.

Tokyo Braze Co., Ltd.

Takashi Terui

Masahiro Takahashi

Tetsuya Kato

Toshinori Ogashiwa

Takeyuki Sagae

Takaomi Kishimoto

Katsunori Akane

Masaaki Kurita

Kenzo Okamoto

Shohei Takeda

Kotaro Matsu

Kenichi Ueki

A gold sputtering target has a gold purity of 99.999% or more. In such a gold sputtering target, an average value of Vickers hardness is 20 or more and less than 40, an average crystal grain size is 15 &#x3bc;m or more and 200 &#x3bc;m or less, and a {110} plane of gold is preferentially oriented to a surface to be sputtered of the gold sputtering target.

Gold sputtering target and method for producing the same

A silver brazing material containing silver, copper, zinc, manganese, nickel, and tin as indispensable constituent elements. The silver brazing material includes 35 mass % or more and 45 mass % or less silver, 18 mass % or more and 28 mass % or less zinc, 2 mass % or more and 6 mass % or less manganese, 1.5 mass % or more and 6 mass % or less nickel, and 0.5 mass % or more and 5 mass % or less tin, with the balance being copper impurities. Within these compositional ranges, a predetermined relation is set between the manganese content and the nickel content, whereby the silver brazing material can be provided with excellent characteristics also in terms of processability or wettability. In the silver brazing material of the present invention, the silver content is reduced, and also melting point reduction and the narrowing of the temperature difference between solidus temperature and liquidus temperature are attempted.

Silver brazing material and joining method using the silver brazing material

An electrode material capable of making more satisfactory the dispersion at the time of production and the aging property of a resonator than Au and capable of reducing the price as compared to Au. An resonator electrode material including a ternary alloy composed of Au and two metals Mand M, and being used as an excitation electrode to excite oscillation in a piezoelectric element, wherein the two metals Mand Mare, respectively, (a) metal M: a metal exhibiting a tendency to decrease the temporal frequency property (&#x394;f/f) from the reference value f, and (b) metal M: a metal exhibiting a tendency to increase the temporal frequency property (&#x394;f/f) from the reference value f. The metal Mis preferably at least any one of Ag, Al and Ni, and the metal Mis preferably at least any one of Pd, Ru, Pt, Ir, Rh and Cu.

Resonator electrode material excellent in aging property, piezoelectric resonator using the same material, and sputtering target made of the same material

Growing community of inventors

Tomioka, Japan

Takashi Terui