Details
| Original language | English |
|---|---|
| Pages (from-to) | 1903-1913 |
| Number of pages | 11 |
| Journal | Materials Science and Technology (United Kingdom) |
| Volume | 39 |
| Issue number | 15 |
| Publication status | Published - 6 Mar 2023 |
Abstract
Compound cast heat sinks have various advantages over conventionally manufactured ones, but oxides present on the metals and formation of a brittle intermetallic layer (IMC) make casting difficult. In the present study, a novel approach was used that employs a silane-doped argon environment to overcome these issues. Oxidation could be fully suppressed and thermal heat conductivities around 67 W/(m·K) were obtained for the compound zone. The microstructural analysis revealed that the thickness of the IMC layer could be kept below the critical value of 3 µm. Yet, the process window was found to be extremely tight. The modelling revealed that the critical time period for formation of the IMC layer is only on the order of a few 10 s.
Keywords
- Compound casting, interface, intermetallics, microstructure, modelling, oxygen-free environment
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Materials Science and Technology (United Kingdom), Vol. 39, No. 15, 06.03.2023, p. 1903-1913.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Increasing thermal conductivity in aluminium-copper compound castings: modelling and experiments
AU - Maier, Hans Jürgen
AU - Gawlytta, Richard
AU - Fromm, Andreas
AU - Klose, Christian
N1 - Funding Information: This study was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project-ID 394563137 – SFB 1368. Support from the team at MAGMA Giessereitechnologie GmbH is also gratefully acknowledged.
PY - 2023/3/6
Y1 - 2023/3/6
N2 - Compound cast heat sinks have various advantages over conventionally manufactured ones, but oxides present on the metals and formation of a brittle intermetallic layer (IMC) make casting difficult. In the present study, a novel approach was used that employs a silane-doped argon environment to overcome these issues. Oxidation could be fully suppressed and thermal heat conductivities around 67 W/(m·K) were obtained for the compound zone. The microstructural analysis revealed that the thickness of the IMC layer could be kept below the critical value of 3 µm. Yet, the process window was found to be extremely tight. The modelling revealed that the critical time period for formation of the IMC layer is only on the order of a few 10 s.
AB - Compound cast heat sinks have various advantages over conventionally manufactured ones, but oxides present on the metals and formation of a brittle intermetallic layer (IMC) make casting difficult. In the present study, a novel approach was used that employs a silane-doped argon environment to overcome these issues. Oxidation could be fully suppressed and thermal heat conductivities around 67 W/(m·K) were obtained for the compound zone. The microstructural analysis revealed that the thickness of the IMC layer could be kept below the critical value of 3 µm. Yet, the process window was found to be extremely tight. The modelling revealed that the critical time period for formation of the IMC layer is only on the order of a few 10 s.
KW - Compound casting
KW - interface
KW - intermetallics
KW - microstructure
KW - modelling
KW - oxygen-free environment
UR - http://www.scopus.com/inward/record.url?scp=85150422039&partnerID=8YFLogxK
U2 - 10.1080/02670836.2023.2184591
DO - 10.1080/02670836.2023.2184591
M3 - Article
AN - SCOPUS:85150422039
VL - 39
SP - 1903
EP - 1913
JO - Materials Science and Technology (United Kingdom)
JF - Materials Science and Technology (United Kingdom)
SN - 0267-0836
IS - 15
ER -