Investigation of reinforcement of porous alumina by nickel aluminate spinel for its use as ceramic membrane
| Autor: | Huanting Wang, Yi-Lan Elaine Fung |
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| Rok vydání: | 2013 |
| Předmět: |
Nial
Materials science Aluminate Spinel Filtration and Separation Porosimetry engineering.material Biochemistry chemistry.chemical_compound Ceramic membrane Flexural strength chemistry visual_art visual_art.visual_art_medium engineering General Materials Science Ceramic Physical and Theoretical Chemistry Composite material Porosity computer computer.programming_language |
| Zdroj: | Journal of Membrane Science. 444:252-258 |
| ISSN: | 0376-7388 |
| Popis: | This paper reports the reinforcement of porous alumina ceramics by forming nickel aluminate spinel phase in an alumina matrix via the reaction between nickel (II) oxide and alumina. X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, three-point bending test and mercury porosimetry were used to characterise the porous ceramic samples. The highest bending strength of 146 MPa was achieved in the porous alumina with 14.7 wt% NiAl 2 O 4 and a porosity of 30.5%. A decrease in bending strength and increase in porosity was observed in porous alumina with over 14.7 wt% NiAl 2 O 4 . The appreciable bending strength and porosity made NiAl 2 O 4 reinforcement a promising method for fabricating ceramic membranes with improved toughness in different geometries including hollow fibre membranes. |
| Databáze: | OpenAIRE |
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