High temperature shape memory alloy actuators

(19)

(11)

EP 2 116 621 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	17.11.2010 Bulletin 2010/46

(43)	Date of publication A2:
	11.11.2009 Bulletin 2009/46

(21)	Application number: 09250494.3

(22)	Date of filing: 24.02.2009

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International Patent Classification (IPC):

C22C 19/00^(2006.01)
C22F 1/10^(2006.01)
C22C 5/04^(2006.01)

C22F 1/00^(2006.01)
F01D 17/14^(2006.01)
C22C 27/02^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA RS

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Priority:

27.02.2008 US 38424

(71)	Applicant: General Electric Company
	Schenectady, NY 12345 (US)

(72)	Inventors:
	Lipkin, Don Mark Niskayuna New York 12309 (US) Jiang, Liang Schenectady New York 12303 (US) Bunker, Ronald Scott Niskayuna New York 12309 (US)

(74)	Representative: Szary, Anne Catherine et al
	GE International Inc. Global Patent Operation - Europe 15 John Adam Street London WC2N 6LU London WC2N 6LU (GB)

(54)	High temperature shape memory alloy actuators

(57) A high temperature component having an actuator body 201 including an actuatable portion comprising a shape memory alloy containing one more of Ni, Al, Nb, Ti and Ta and a platinum-group metal. The shape memory alloy has an altered geometry at a predetermined temperature. The actuator body 201 is also capable of operation in and is resistant to high temperature oxidizing atmospheres. A method for forming an actuator and a method for high temperature control are also disclosed.

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