Quantitative XRD studies of ZnAl sub 2 O sub 4 (spinel) synthesized by sol-gel and powder methods

Journal Article · Fri Jul 01 04:00:00 EDT 1988 · Advanced Ceramic Materials; (USA)

DOI:https://doi.org/10.1111/j.1551-2916.1988.tb00249.x· OSTI ID:6112195

Keller, J T; Agrawal, D K; McKinstry, H A ^[1]

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1. Pennsylvania State Univ., University Park (USA)

ZnAl{sub 2}O{sub 4} spinel was prepared by both the sol-gel method and by the solid-state reaction technique. Physical properties of the product obtained by the two methods are compared. Sol-gel-derived ZnAl{sub 2}O{sub 4} showed evidence of crystals at as low as 264{degree}C. Quantitative x-ray diffraction (XRD) methods utilizing the adiabatic principles of XRD analysis of mixtures were used to study the formation of ZnAl{sub 2}O{sub 4} quantitatively. Data obtained in this investigation support the model that the diffusing species in the formation of ZnAl{sub 2}O{sub 4} is a one-way transfer of ZnO to Al{sub 2}O{sub 3} particles as opposed to an interdiffusion of both ZnO and Al{sub 2}O{sub 3}.

• OSTI ID: 6112195
• Journal Information: Advanced Ceramic Materials; (USA), Journal Name: Advanced Ceramic Materials; (USA) Vol. 3:4; ISSN ACEME; ISSN 0883-5551
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MEASURING METHODS
MINERALS
NUMERICAL DATA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SOL-GEL PROCESS
SPINELS
X-RAY DIFFRACTION
ZINC COMPOUNDS
ZINC OXIDES