Spontaneous infiltration of alumina by copper-oxygen alloys

Journal Article · Mon Jan 01 00:00:00 EST 1996 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1996.tb07888.x· OSTI ID:203544

Gonzalez, E J; Trumble, K P ^[1]

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1. Purdue Univ., West Lafayette, IN (United States). School of Materials Engineering

Infiltration of alumina powder compacts by molten copper-oxygen alloys under controlled oxygen partial pressures has been studied. Spontaneous infiltration occurred for copper alloys containing more than approximately 5 at.% oxygen. Despite supersaturation of the copper with oxygen, no Cu{sub 2}O or interfacial reaction layers of CuAlO{sub 2} were resolved by TEM, suggesting the critical wettability for infiltration is not determined by interfacial chemical reaction. CuAlO{sub 2} did form, but as discrete inclusions up to 0.5 mm in diameter. Infiltration and microstructure development are discussed in terms of the observed wetting behavior and available data on interfacial oxygen adsorption.

• Sponsoring Organization: USDOE
• OSTI ID: 203544
• Journal Information: Journal of the American Ceramic Society, Vol. 79, Issue 1; Other Information: PBD: Jan 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
FABRICATION
ALUMINIUM OXIDES
COPPER
COPPER OXIDES
IMPREGNATION
LIQUID METALS
WETTABILITY
TRANSMISSION ELECTRON MICROSCOPY
INCLUSIONS
MICROSTRUCTURE
INTERFACES
SURFACE TENSION