Sökning: id:"swepub:oai:research.chalmers.se:b34625a8-5276-4dd7-a046-5d6ff6c7fc81" >
Influence of Ag add...
Influence of Ag addition on the microstructure and properties of copper-alumina composites prepared by internal oxidation
-
- Zhou, Xiyi, 1991 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Yi, D. Q. (författare)
- Central South University
-
- Nyborg, Lars, 1958 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
visa fler...
-
- Hu, Z. (författare)
- Central South University
-
- Huang, J. (författare)
- Central South University
-
- Cao, Yu, 1969 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
visa färre...
-
(creator_code:org_t)
- Elsevier BV, 2017
- 2017
- Engelska.
-
Ingår i: Journal of Alloys and Compounds. - : Elsevier BV. - 0925-8388. ; 722, s. 962-969
- Relaterad länk:
-
http://dx.doi.org/10...
-
visa fler...
-
https://research.cha...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- In present study, Cu-Al2O3 composites with both higher micro-hardness and electrical conductivity were fabricated by internal-oxidizing Cu-Al and Cu-Al-Ag sheets at 950 degrees C for 2 h. A small amount of Ag was doped as additives with atomic ratio of Ag/Al ranging from 0 to 0.25. Effects of Ag addition on microstructures, electrical conductivity and micro-hardness were investigated. Results show that the morphology and size distribution of Al2O3 in internal-oxidized Cu-Al alloys were highly sensitive to Ag addition. The size of Al2O3 precipitates decreased from similar to 63 nm to similar to 37 nm when increasing Ag content. Moreover, a large number of triangular Al2O3 precipitate with similar size was observed by field emission scanning electron microscope (FESEM) and high-resolution transmission electron microscopy (HRTEM) in Ag-doped Cu-Al2O3 composites. The orientation relationship between triangular Al2O3 and Cu matrix was [112](Cu)//[110](Al2O3), (11 (1) over bar)(Cu)//(002)(Al2O3) and (2 (2) over bar 0)(Cu)//(2 (2) over bar 0)(Al2O3). Increasing the amount of Ag enhances the electrical conductivity and mechanical strength simultaneously. The optimal electrical and mechanical properties which were 85.9% IACS and 162 HV respectively, were obtained when atomic ratio of Ag/Al was similar to 1: 4 in internal-oxidized Cu- Al2O3-Ag alloy.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Electrical conductivity
- Microstructures
- Internal oxidation
- Copper-based composites
- Properties
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas