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Degradation of Carb...
Degradation of Carbon Nanotube Array Thermal Interface Materials through Thermal Aging: Effects of Bonding, Array Height, and Catalyst Oxidation
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- Nylander, Andreas, 1988 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Hansson, Josef, 1991 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Nilsson, Torbjörn, 1962 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ye, L. (författare)
- SHT Smart High-Tech AB
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- Fu, Yifeng, 1984 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Liu, Johan, 1960 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2021-06-23
- 2021
- Engelska.
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Ingår i: ACS Applied Materials & Interfaces. - : American Chemical Society (ACS). - 1944-8252 .- 1944-8244. ; 13:26, s. 30992-31000
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https://research.cha... (primary) (free)
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https://pubs.acs.org...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Carbon nanotube (CNT) array thermal interface materials (TIMs) are promising candidates for high-performance applications in terms of thermal performance. However, in order to be useful in commercial applications, the reliability of the interfaces is an equally important parameter, which so far has not been thoroughly investigated. In this study, the reliability of CNT array TIMs is investigated through accelerated aging. The roles of CNT array height and substrate configuration are studied for their relative impact on thermal resistance degradation. After aging, the CNT catalyst is analyzed using X-ray photoelectron spectroscopy to evaluate chemical changes. The CNT-catalyst bond appears to degrade during aging but not to the extent that the TIM performance is compromised. On the other hand, coefficient of thermal expansion mismatch between surfaces creates strain that needs to be absorbed, which requires CNT arrays with sufficient height. Transfer and bonding of both CNT roots and tips also create more reliable interfaces. Crucially, we find that the CNT array height of most previously reported CNT array TIMs is not enough to prevent significant reliability problems.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Textil-, gummi- och polymermaterial (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Textile, Rubber and Polymeric Materials (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
Nyckelord
- thermal interface materials
- reliability
- thermal cycling
- carbon nanotubes
- XPS
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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