Shape memory alloy comprising Ti, Ni and Si
View Patent ↗Disclosed is a shape memory alloy. The shape memory alloy is composed of Ti, Ni and Si, wherein Si is contained in an amount of 0.1 to 0.3 at. %.
1. A shape memory alloy composed of Ti, Ni, and Si, wherein Si is contained in an amount of 0.1 to 0.3 at. %.
2. The shape memory alloy according to claim 1 , wherein the shape memory alloy is composed of 50Ti-(50−x)Ni-xSi (at. %) (0.1≤x≤0.3).
3. The shape memory alloy according to claim 1 , wherein the shape memory alloy is composed of 50.2Ti-(49.8−x)Ni-xSi (at. %) (0.1≤x≤0.3).
4. The shape memory alloy according to claim 1 , wherein the shape memory alloy has a martensitic transformation start temperature M s in a range of 70° C. to 90° C.
5. The shape memory alloy according to claim 1 , wherein phase transformation to an R (rhombohedral) phase from a B (cubic) phase in the shape memory alloy occurs in a specific temperature range.
6. The shape memory alloy according to claim 5 , wherein the phase transformation occurs in a temperature range of between 60° C. to 75° C.
7. An actuator which operates according to temperature change, the actuator being composed of the shape memory alloy according to claim 1 .