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Title:
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The influence of powder characteristics on the properties of aluminaceramics shaped by injection moulding from water based suspensions
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Author(s):
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Published by:
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Publication date:
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ECN
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1996
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ECN report number:
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Document type:
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ECN-RX--96-016
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Other
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Number of pages:
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Full text:
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18
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Download PDF
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Abstract:
The relationship between alumina powder characteristics and therheological properties of water based suspensions and their influence on the
degree of densification and mechanical properties of complex shaped alumina
ceramics has been studied. A series of alumina powders were used to test the
influence of mono- and bimodal powders on the relative viscosity of water
based suspensions using agarose as a binder and glycerol as a lubricant. The
highest solids loading, up to 54 vol.%, was obtained for the suspension based
on the bimodal A15 SG alumina powder. The alumina ceramics shaped by low
pressure injection moulding from the suspension with 50 vol.% of A15 SG
powder were characterized by good mechanical strength in the green dry phase,
low drying and firing shrinkage, high degree of densification and bending
strength of approximately 250 MPa. 5 figs., 4 tabs., 22 refs.
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