Ellen Y. Sun - South Windsor CT, US Gary D. Linsey - Glastonbury CT, US John E. Holowczak - South Windsor CT, US Neil R. Baldwin - Lake Forest CA, US Harry E. Eaton - Woodstock CT, US
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
B32B 9/04 F03B 3/12
US Classification:
428446, 428448, 428697, 428698, 428699, 428701, 428702, 416241 B
Abstract:
An article comprises a silicon based substrate, a bond layer and a protective top layer. The top layer is selected from the group consisting of rare earth disilicates, yttrium disilicates, rare earth monosilicates, yttrium monosilicates, silica and mixtures thereof. The protective layer described above is used in combination with a bond layer provided between the protective layer and the silicon based substrate which functions as oxygen getter and includes an oxygen gettering agent. By oxygen gettering agent is meant a refractory metal oxide former which forms an oxide at operational condition of (high temperature and aqueous environment) having a melting point of greater than 1500 C. wherein the negative free energy of formation of the refractory metal oxide from the refractory metal is more than 100 Kcal/mole. Suitable oxygen gettering agents include silicon and other refractory metals. An oxygen gettering agent may also be added to the protective layer.
Gary D. Linsey - Glastonbury CT Otis X. Chen - Singapore, SG Martin J. Blackburn - Kensington CT
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
B22F 704
US Classification:
428549
Abstract:
A titanium alloy matrix fiber reinforced composite made from titanium alloy sheet processed to have ductility up to about 35%. Of particular usefulness is the composite having a Ti. sub. 3 Al titanium aluminide having this level of ductility. The composites have good resistance to thermal cyclic fatigue.
Raytheon Technologies Research Center Apr 2020 - Jul 2020
Director, Business Development
United Technologies Research Center Apr 2020 - Jul 2020
Director, Business Development
United Technologies Research Center Jun 2005 - May 2017
Manager, Business Development Team
United Technologies Research Center Jun 2000 - Jun 2005
Project Leader
Pratt & Whitney Jun 1996 - Jun 2000
Program Manager
Education:
Rensselaer Polytechnic Institute at Hartford 1987 - 1989
Masters, Metallurgical Engineering
Alfred University 1982 - 1986
Bachelors, Bachelor of Arts, Mathematics, Engineering
The University of Sheffield 1985 - 1985
Bachelors, Engineering
University of Virginia Darden School of Business