Measurement of Modulus in Ceramic Gelcasting Process by Vane Geometry

Abstract

Abstract: A four-blade geometry test fixture was used to capture the evolution moduli of alumina suspensions in gelcasting process in oscillatory measurement. The vane geometry was treated as a couette while
the test material moving with the blade formed cylinder-like shearing surface. The diameter of the cylinder was defined as effective diameter of vane and calibrated by comparing the complex modulus G*
with data from parallel plate in measuring polyacrylamide solution. Test results show that the effective diameter of the shearing cylinder is smaller than the diameter of the blades . This method provides an
convenient way to measure the sol-gel transition in gelcasting process.

Key words: rheometry, gelcasting, vane

CLC Number:

TB301

DONG Man-Jiang,ZHANG Zhao-Quan,LIU Qian,JIANG Dong-Liang. Measurement of Modulus in Ceramic Gelcasting Process by Vane Geometry[J]. Journal of Inorganic Materials.

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Measurement of Modulus in Ceramic Gelcasting Process by Vane Geometry

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