Cu–Al–Mn形状記憶合金を用いた機械式ヒートスイッチの開発
書誌事項
- タイトル別名
-
- Development of a Mechanical Heat Switch Utilizing Cu–Al–Mn Shape Memory Alloys
抄録
<p>Lunar and deep–space exploration and astronomical observation missions equipped with cooling systems for high–sensitivity observations require thermal switches (also called heat switches) that can adjust the heat flow to control the temperature inside spacecraft appropriately. In this study, we proposed a mechanical heat switch utilizing a single–crystal Cu–Al–Mn shape memory alloy for its drive unit. The effect of aging treatment on the martensitic transformation temperature (heat switch drive temperature) of a Cu–17Al–11.6Mn (at.％) alloy was investigated, and it was found that the transformation temperature could be adjusted in the range of −80 to −50°C by varying the duration from 15 min to 2 h at an aging temperature of 150°C. A prototype heat switch was fabricated using a single crystal with an orientation exhibiting a large transformation strain. Cooling–heating tests for the drive unit demonstrated thermal drive with a large displacement of approximately 0.8 mm and a small temperature hysteresis, indicating that the single–crystal Cu–Al–Mn shape memory alloy is highly applicable to heat switches.</p>
収録刊行物
-
- 銅と銅合金
-
銅と銅合金 61 (1), 334-338, 2022
日本銅学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390857368729003008
-
- ISSN
- 2435872X
- 13477234
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
-
- 抄録ライセンスフラグ
- 使用可