pp. 2867-2875
S&M2307 Research Paper of Special Issue https://doi.org/10.18494/SAM.2020.2938 Published: August 31, 2020 Metamagnetic Shape Memory Alloy Thin Plates Consolidated by Compression Shearing Method at Room Temperature for Thermal Energy Harvesting Device [PDF] Hiroyuki Miki, Eijiro Abe, Sho Takeda, Makoto Ohtsuka, and Manfred Kohl (Received May 7, 2020; Accepted July 22, 2020) Keywords: metamagnetic material, shape memory alloy, severe plastic deformation, energy harvesting
As a powder metallurgy technique, the compression shearing method at room temperature (COSME-RT) is used for making metamagnetic shape memory alloy (MSMA) thin plates. COSME-RT is a method for consolidating a thin plate from powder raw material by a certain dynamic process that simultaneously applies a compression stress and a shearing strain to a powder material at room temperature and in ambient atmosphere. A plate of 50 μm thickness fabricated by COSME-RT using Ni-Co-Mn-In powder from ground sputtered film is cut into 2 × 2 × 0.05 mm3 and then applied to a thermal energy harvesting device. This device generates an average power density of 68 μW∙cm−3 and a peak power of 0.95 mW∙cm−3, which makes it possible to supply a small amount of electric power to a certain type of sensor or small sensor device.
Corresponding author: Hiroyuki MikiThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Hiroyuki Miki, Eijiro Abe, Sho Takeda, Makoto Ohtsuka, and Manfred Kohl, Metamagnetic Shape Memory Alloy Thin Plates Consolidated by Compression Shearing Method at Room Temperature for Thermal Energy Harvesting Device, Sens. Mater., Vol. 32, No. 8, 2020, p. 2867-2875. |