<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>The zirconia-toughened-alumina (ZTA) composite powder was exposed to a prior ball milling treatment with a small amount of stearic acid (SA) before the traditional blending process. The effect of different amounts of stearic acid on surface properties of the powder, the particle size distribution of the powder, and the rheological properties of the suspension were systematically studied within the design of experiments. Fourier transformation infrared spectroscopy (FTIR) analysis was used to prove the chemical interaction between the stearic acid and the ZTA powder. The effects of SA content on the particle sizes and their distribution were carefully examined. Rheological properties such as viscosity, yield stress, and power law exponent of the suspensions were determined within a temperature range of 140–170 °C. The optimal content of SA to improve the properties of the suspensions was found to be 3 wt.%.</p></abstract>

The zirconia-toughened-alumina (ZTA) composite powder was exposed to a prior ball milling treatment with a small amount of stearic acid (SA) before the traditional blending process. The effect of different amounts of stearic acid on surface properties of the powder, the particle size distribution of the powder, and the rheological properties of the suspension were systematically studied within the design of experiments. Fourier transformation infrared spectroscopy (FTIR) analysis was used to prove the chemical interaction between the stearic acid and the ZTA powder. The effects of SA content on the particle sizes and their distribution were carefully examined. Rheological properties such as viscosity, yield stress, and power law exponent of the suspensions were determined within a temperature range of 140–170 °C. The optimal content of SA to improve the properties of the suspensions was found to be 3 wt.%.

Influence of stearic acid on the structure and rheological behavior of injection-molded ZTA suspensions

Institute of Materials Science and Engineering, Fuzhou University, Fujian, China, 350108

Jirui Ceramics Technology Co. Ltd., Ningbo, Zhejiang, China, 315000

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The zirconia-toughened-alumina (ZTA) composite powder was exposed to a prior ball milling treatment with a small amount of stearic acid (SA) before the...

Influence of stearic acid on the structure and rheological behavior of injection-molded ZTA suspensions

Published Online: Feb 09, 2013

Page range: 36 - 42

DOI: https://doi.org/10.2478/s13536-012-0064-6

Keywords
ZTA suspension, ceramic injection molding, rheological property

© 2013 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Influence of stearic acid on the structure and rheological behavior of injection-molded ZTA suspensions

Published Online: Feb 09, 2013

Page range: 36 - 42

DOI: https://doi.org/10.2478/s13536-012-0064-6

KeywordsZTA suspension, ceramic injection molding, rheological property

© 2013 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
ZTA suspension, ceramic injection molding, rheological property