Breakthrough Method in Solid Loading of Alumina Slurry

Tsinghua University Press

The semiconductor manufacturing and defense sectors have witnessed a substantial increase in demand for advanced ceramic components with large dimensions and intricate geometries. Among the various stages involved in ceramic fabrication, forming is particularly critical because it directly influences the structural reliability of ceramic components and contributes to reducing production costs. Spontaneous coagulation casting (SCC) is an emerging forming technique. In this method, a copolymer of isobutylene and maleic anhydride (denoted as PIBM; trade name: Isobam) functions simultaneously as a dispersant and a gelling agent, allowing for in situ solidification of ceramic slurries to form green bodies. Based on functional groups and molecular weight, PIBM variants include Isobam 104, Isobam 600AF, and Isobam 04, among others.

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