Ceramic blade attachmentsStudies under way on two concepts for producing a turbine rotor with ceramic blades and superalloy disks are discussed. One concept employs hot-pressed silicon nitride blades and a compliant interlayer at the blade root end fitting whereas the second concept relies on a superplastic plastic forging technique to attach ceramic blades to the metal disk. This latter concept has been hot spin tested at 2250 F and 45,000 RPM for 50 hours in a vacuum spin pit. The fully bladed (30 blades) rotor survived this major test.
Document ID
19790028835
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Calvert, G. S. (Pratt and Whitney Aircraft West Palm Beach, FL, United States)
Carruthers, W. D. (United Technologies Corp. Pratt and Whitney Aircraft Group, West Palm Beach, Fla., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
Mechanical Engineering
Meeting Information
Meeting: Ceramics for high performance applications - II;Fifth Army Materials Technology Conference