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:
Apr. 01, 2014
Filed:
Feb. 13, 2012
David B. Allen, Oviedo, FL (US);
Anand A. Kulkarni, Oviedo, FL (US);
David B. Allen, Oviedo, FL (US);
Anand A. Kulkarni, Oviedo, FL (US);
Siemens Aktiengesellschaft, München, DE;
Abstract
A system of layers in a protective coating () for a substrate (), including at least an outer thermal barrier layer () and a tungsten bronze structure ceramic underlayer () that reduces spalling of the outer layer. The range of materials for the underlayer includes ceramics of the form BaReTiO, where 0<m<1.5, and Re is any rare earth element or mixture thereof. These underlayer materials reduce spalling of the thermal barrier layer, and thus extend the life of the coating system. In some embodiments, materials for the outer thermal barrier layer may include Yttria-stabilized Zirconia (YSZ) or ceramics with lower thermal conductivity than YSZ. A segmented YSZ layer () is provided in some embodiments for additional thermal expansion compliance.