Influence of Stearic Acid Concentration on the Processing of ZrO2-Containing Feedstocks Suitable for Micropowder Injection Molding

被引：33
作者：
Hanemann, Thomas [1 ]
Heldele, Richard
Mueller, Tobias
Hausselt, Juergen
机构：
[1] Forschungszentrum Karlsruhe, Inst Mat Res 3, D-76344 Eggenstein Leopoldshafen, Germany
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2011年 / 8卷 / 04期
关键词：
PROCESS CHAIN DEVELOPMENT; FLOW BEHAVIOR; POWDER; METAL; REPLICATION; SURFACTANT; POLYMER; BINDER; PARTS;
D O I：
10.1111/j.1744-7402.2010.02519.x
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influence of stearic acid concentration on the processability of polyethylene/wax-microsized zirconia feedstocks was investigated systematically. Regarding dense and warpage-free ceramic parts, the addition of stearic acid as a dispersant is crucial for feedstock preparation with at least 50 vol% solid loads. A stearic acid concentration of 2.2 mg/m(2) (referring to the fillers specific surface area) yields the best feedstock flow properties and homogeneity. Filling studies showed that feedstocks containing 55 vol% of submicrometer-sized zirconia powder in a polyethylene-wax binder system with 2.2 mg/m(2) stearic acid as a dispersant can be processed by micropowder injection molding.
引用
收藏
页码：865 / 872
页数：8
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