Abstract: A process includes solution heat treating a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate to dissolve the gamma prime precipitate in the nickel based superalloy; cooling the nickel based superalloy to about 85% of a solution temperature measured on an absolute scale to coarsen the gamma prime precipitate such that a precipitate structure is greater than about 0.7 micron size; and wrought processing the nickel based superalloy at a temperature below a recrystallization temperature of the nickel based superalloy. A material includes a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate in which the precipitate structure is greater than about 0.7 micron size.
Type:
Grant
Filed:
December 10, 2018
Date of Patent:
October 6, 2020
Assignee:
United Technologies Coporation
Inventors:
Dilip M. Shah, Alan D. Cetel, Venkatarama K. Seetharaman
Abstract: A method for reducing thermal conductivity in thermal barrier coatings broadly includes the steps of depositing a mixture containing a ceramic matrix and a metallic dispersant capable of forming a metal oxide upon a substrate to form one or more layers; and heating the layers at a temperature and for a time sufficient to oxidize the metallic dispersant and form one or more layers of a thermal barrier coating.
Abstract: Trivalent chromium conversion coatings are provided on a metal substrate wherein the trivalent chromium conversion coating has a halogen content of 1 atom % maximum.
Type:
Grant
Filed:
December 28, 2006
Date of Patent:
August 2, 2011
Assignee:
United Technologies Coporation
Inventors:
Mark R. Jaworowski, Sarah Arsenault, James T. Beals