Al2O3p/Al composites with compatible interface by matrix alloying
Li, DX; Zhou, ZX; Fan, ZY
Corresponding AuthorLi, DX(
AbstractApproach to improve the wettability and adhesion between Al2O3 and Al by matrix alloying was proposed. The alloying element M will have to meet both of the following requirements: (1) It is able to reduce the surface tension of molten aluminium, gamma(M) < gamma(Al);]; (2) The oxide of M has more negative standard free energy than Al2O3, DeltaG(Mx)O(y) < DeltaG(Al2)O(3). This proposal has been proved experimentally. It has been revealed that Mg enhanced wetting dramatically. Bi, Pb, and Li promoted wetting further in addition to Mg, whereas Cu depressed infiltration. It has been found that Mg was segregated to the Al2O3/Al interface in Al2O3/6061Al composite and MgAl2O4 was formed at the interface in some case. However, Bi-and Pb-rich nanometer particles were found between or inside of reinforcement in Al2O3/6262Al composite. The mechanical properties and microstructures of 0.5 mum or 4 mum Al2O3/6061Al and 4 mum Al2O3/6262Al composites were also discussed.
KeywordAl2O3p/Al composites matrix alloying thermodynamics Al2O3/Al interface HREM
Indexed BySCI
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000176623900009
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorLi, DX
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Brunel Univ, Dept Mat Phys & Chem, Uxbridge UB8 3PH, Middx, England
Recommended Citation
GB/T 7714
Li, DX,Zhou, ZX,Fan, ZY. Al2O3p/Al composites with compatible interface by matrix alloying[J]. ACTA METALLURGICA SINICA,2002,38(6):602-608.
APA Li, DX,Zhou, ZX,&Fan, ZY.(2002).Al2O3p/Al composites with compatible interface by matrix alloying.ACTA METALLURGICA SINICA,38(6),602-608.
MLA Li, DX,et al."Al2O3p/Al composites with compatible interface by matrix alloying".ACTA METALLURGICA SINICA 38.6(2002):602-608.
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