The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 2010
Filed:
Sep. 25, 2007
Yuji Akimoto, Fukuoka, JP;
Kazuro Nagashima, Fukuoka, JP;
Tetsuya Kimura, Fukuoka, JP;
Yasuhiro Kamahori, Fukuoka, JP;
Yuji Akimoto, Fukuoka, JP;
Kazuro Nagashima, Fukuoka, JP;
Tetsuya Kimura, Fukuoka, JP;
Yasuhiro Kamahori, Fukuoka, JP;
Shoei Chemical Inc., Tokyo, JP;
Abstract
A nickel-rhenium alloy powder comprising nickel as a main component, 0.1 to 10% by weight of rhenium, and having an average particle size of 0.05 to 1.0 μm is provided. The nickel-rhenium alloy powder has a surface oxide film containing a nickel oxide and a rhenium oxide, and the amount of oxygen in the surface oxide film is 0.1 to 3.0% by weight relative to the total weight of the powder. The nickel-rhenium alloy powder is suitable, in particular, for forming internal electrode layers of a multilayer ceramic electronic component. The obtained powder is homogeneously mixed and dispersed in an organic vehicle, together with other additives as needed, to prepare a conductor paste. The surface oxide film allows bringing the sintering shrinkage behavior of electrode layers and ceramic layers closer to each other when the nickel-rhenium alloy powder is used, in particular, for forming internal electrodes of a multilayer ceramic electronic component. Moreover, there occurs no electrode spheroidizing caused by oversintering. and thus thinner, dense internal electrodes having excellent continuity can be formed.