Ni-Ti semi-finished products and related methods
AssigneeSAES Smart Materials, Inc.
InventorsFrancis E. Sczerzenie, Graeme William Paul
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Abstract
Semi-finished products for the production of devices containing thermoelastic materials with improved reliability and reproducibility are described. The semi-finished products are based on an alloy of Ni—Ti plus elements X and/or Y. The nickel amount is comprised between 40 and 52 atom %, X is comprised between 0.1 and 1 atom %, Y is comprised between 1 and 10 atom % and the balance is titanium. The one or more additional elements X are chosen from Al, Ta, Hf, Si, Ca, Ce, La, Re, Nb, V, W, Y, Zr, Mo, and B. The one or more additional elements Y are chosen from Al, Ag, Au, Co, Cr, Fe, Mn, Mo, Nb, Pd, Pt, Ta and W.
Claims17
A semi-finished product comprising:
- a nickel-titanium alloy and an amount Y of one or more additional elements, wherein:
- nickel amount is comprised between 40 and 52 atom %, the amount Y is comprised between 1 and 10 atom %, the balance being titanium;
- the one or more additional elements are selected from Al, Co, Cr, Mn, Mo, Nb, Ag, Au, Fe, Pd, Pt, Ta, and W;
- and
- the amount Y and the one or more additional elements are selected to result in variation of the amount Y over different points of the semi-finished product being less than 20%.
Dependencies are inferred from the claim text.