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:
Nov. 26, 1996
Filed:
May. 19, 1995
Masayuki Itoh, Kanagawa-ken, JP;
Kazuhiro Yasuda, Kanagawa-ken, JP;
Kunihiko Wada, Kanagawa-ken, JP;
Seiichi Suenaga, Kanagawa-ken, JP;
Shinji Arai, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Abstract
A heat-resistant member is constructed by having a ceramic coating layer deposited on the surface of a metallic substrate through the medium of a metallic bonding layer. The metallic bonding layer is composed of at least two layers, i.e. a layer of an aggregate of minute particles disposed on the metallic substrate side and a layer of an aggregate of coarse particles disposed on the ceramic coating layer side. Otherwise, the metallic bonding layer is composed of at least three layers, i.e. two layers of an aggregate of coarse particles disposed one each on the metallic substrate side and the ceramic coating layer side and one layer of an aggregate of minute particles interposed between these two layers of an aggregate of coarse particles. These layers are obtained by the low pressure ambient plasma thermal spraying using a fine powder or a coarse powder of an alloy resistant to corrosion and oxidation. The metallic bonding layer constructed as described above is excellent in the ability to resist high temperature oxidation and high temperature corrosion and stable to tolerate thermal fatigue and thermal impacts. Thus, it is capable of preventing the thermal barrier coating layer from sustaining cracks or inducing film separation.