Plastic flow of saturated alumina powder compacts: Pair potential and strain rate

被引：20

作者：

Franks, GV ^{[1
]}

Lange, FE ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

AICHE JOURNAL | 1999年 / 45卷 / 08期

关键词：

D O I：

10.1002/aic.690450817

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A study was conducted to describe the effect of the pair potential, as controlled by pH and salt concentration, and strain rate on the plastic flow of the saturated, consolidated alumina bodies. Alpha-alumina powder was prepared as aqueous slurries containing 0.20 volume fraction of solids at pH 4.0. After dispersing the aqueous slurry at pH 4.0, it was then either coagulated with additions of NH4Cl to create a weakly attractive network, or flocculated to create a strongly attractive network by changing the pH to 9. Bodies formulated at pH 9 and pH 6 have flow stresses at low displacement rates that were 6 to 10 times greater than the flow stresses of bodies formulated at pH 4 and pH 5 with added salt.

引用

页码：1830 / 1835

页数：6

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