A strategy to obtain a high-density and high-strength zirconia ceramic via ceramic injection molding by the modification of oleic acid
来源期刊：International Journal of Minerals Metallurgy and Materials2017年第6期
论文作者：Jia-xin Wen Tian-bin Zhu Zhi-peng Xie Wen-bin Cao Wei Liu
文章页码：718 - 725
摘 要：Despite its unique high efficiency and good environmental compatibility, the water-soluble binder system still encounters problems achieving a desired sintered part via ceramic injection molding because of the poor compatibility and the powder-binder segregation between ceramic powders and binders. The objective of this study was to obtain a sintered part with excellent properties by introducing a small quantity of oleic acid to the surface of zirconia powders before the mixing process. As opposed to many previous investigations that focused only on the rheological behavior and modification mechanism, the sintering behavior and densification process were systematically investigated in this study. With the modified powders, debound parts with a more homogeneous and smaller pore size distribution were fabricated. Also, a higher density and greater flexural strength were achieved in the sintered parts fabricated using the modified powders.
Jia-xin Wen1，Tian-bin Zhu2，Zhi-peng Xie2，Wen-bin Cao1，Wei Liu3
1. School of Materials Science and Engineering, University of Science and Technology Beijing2. Sate Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University3. School of Electromechanical Engineering, Guangdong University of Technology
摘 要：Despite its unique high efficiency and good environmental compatibility, the water-soluble binder system still encounters problems achieving a desired sintered part via ceramic injection molding because of the poor compatibility and the powder-binder segregation between ceramic powders and binders. The objective of this study was to obtain a sintered part with excellent properties by introducing a small quantity of oleic acid to the surface of zirconia powders before the mixing process. As opposed to many previous investigations that focused only on the rheological behavior and modification mechanism, the sintering behavior and densification process were systematically investigated in this study. With the modified powders, debound parts with a more homogeneous and smaller pore size distribution were fabricated. Also, a higher density and greater flexural strength were achieved in the sintered parts fabricated using the modified powders.
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