Fabrication of a Cu/TiNi Composite with High Air-Tightness and Low Thermal Expansion
JOM, ISSN: 1543-1851, Vol: 72, Issue: 2, Page: 883-888
2020
- 4Citations
- 2Captures
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Article Description
Copper alloys exhibit a positive thermal expansion effect, which is undesirable to materials as in service, while TiNi composite materials exhibit negative thermal expansion. In this study, we fabricated a new high-density Cu/TiNi composite with low thermal expansion through electroless deposition and powder metallurgy. Mixed powders of 15% electroless deposited Cu-TiNi composite powders, and 85% prepared Cu powders were cold extruded, vacuum hot press heat-treated, and hot compressed at 900°C for 2 h. The coefficients of thermal expansion of the Cu/TiNi composite at 100°C, 200°C, and 300°C were 13.99 × 10/K, 17.28 × 10/K, and 17.72 × 10/K, respectively. The fabricated Cu/TiNi composite materials showed good air-tightness and negative thermal expansion, so have bright prospects in lead frames and other electrical and electronic applications.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85076757579&origin=inward; http://dx.doi.org/10.1007/s11837-019-03930-w; http://link.springer.com/10.1007/s11837-019-03930-w; http://link.springer.com/content/pdf/10.1007/s11837-019-03930-w.pdf; http://link.springer.com/article/10.1007/s11837-019-03930-w/fulltext.html; https://dx.doi.org/10.1007/s11837-019-03930-w; https://link.springer.com/article/10.1007/s11837-019-03930-w
Springer Science and Business Media LLC
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