アクチュエータへの適用を目的とした形状記憶合金の材料改質

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  • Material Modification of Shape Memory Alloy for Actuator Applications

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<p>In the process of downsizing and/or energy saving of actuators and devices, the application of functional materials has attracted attention in addition to the optimizing of design and system. Functional materials are the materials that have some additional responsiveness to electricity, magnetic field, light ,heat, etc. in addition to the function of the structural material. Shape memory materials are the materials that memorize a certain shape and returns to the original shape under certain conditions after deformation. In recent years, new shape memory alloys which have a different properties from the conventional types, such as higher performance, quick response and high durability etc., are developed, and applied research has been actively conducted on shape memory alloys due to their practicality. For improving the characteristics of shape memory alloys and taking advantage of these characteristics, a technique for adding some processing to the materials has been proposed in this paper. Such material modification aims to expand the application area of shape memory alloys and improve the characteristics of the actuator and device using shape memory alloys. The coating technique aiming at biomedical applications using carbon-based thin films, and the powder molding technique by severe plastic deformation aiming at improvement of material strength and magnetic property are reported.</p>

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