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:
Sep. 24, 2013
Filed:
May. 23, 2012
Morimichi Watanabe, Nagoya, JP;
Asumi Jindo, Okazaki, JP;
Yuji Katsuda, Tsushima, JP;
Yosuke Sato, Hashima-County, JP;
Yoshinori Isoda, Nagoya, JP;
Morimichi Watanabe, Nagoya, JP;
Asumi Jindo, Okazaki, JP;
Yuji Katsuda, Tsushima, JP;
Yosuke Sato, Hashima-County, JP;
Yoshinori Isoda, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A ceramic material according to the present invention mainly contains magnesium, aluminum, oxygen, and nitrogen, the ceramic material has the crystal phase of a MgO—AlN solid solution in which aluminum nitride is dissolved in magnesium oxide, the crystal phase serving as a main phase. Preferably, XRD peaks corresponding to the (200) and (220) planes of the MgO—AlN solid solution measured with CuKα radiation appear at 2θ=42.9 to 44.8° and 62.3 to 65.2°, respectively, the XRD peaks being located between peaks of cubic magnesium oxide and peaks of cubic aluminum nitride. More preferably, the XRD peak corresponding to the (111) plane appears at 2θ=36.9 to 39°, the XRD peak being located between a peak of cubic magnesium oxide and a peak of cubic aluminum nitride.