<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Ag — 8 wt. % ZnO composites were synthesized by ball milling, heat treating and hot pressing of silver and zinc oxide powder mixtures. The crystalline size and microstrain of the milled powders before and after heat treatment were determined by Debye-Scherrer andWilliamson-Hall methods. It was shown that heat treatment resulted in decrease of microstrain and increase in the crystallite size of the milled powders. The effect of uniaxial pressure magnitude and duration of hot pressing at 550 °C on the final density of the powder compacts were investigated. The results showed that both plastic flow and atomic diffusion mechanisms affected densification of the composite powders during the hot pressing process. However, the latter one had more effective role on the density of the hot-pressed samples. The synthesized composites showed homogenous microstructure with relatively high density and hardness.</p></abstract>

Ag — 8 wt. % ZnO composites were synthesized by ball milling, heat treating and hot pressing of silver and zinc oxide powder mixtures. The crystalline size and microstrain of the milled powders before and after heat treatment were determined by Debye-Scherrer andWilliamson-Hall methods. It was shown that heat treatment resulted in decrease of microstrain and increase in the crystallite size of the milled powders. The effect of uniaxial pressure magnitude and duration of hot pressing at 550 °C on the final density of the powder compacts were investigated. The results showed that both plastic flow and atomic diffusion mechanisms affected densification of the composite powders during the hot pressing process. However, the latter one had more effective role on the density of the hot-pressed samples. The synthesized composites showed homogenous microstructure with relatively high density and hardness.

Synthesis of Ag-ZnO composites via ball milling and hot pressing processes

Department of Materials Engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran

Ceramic Department, Materials and Energy Research Center (MERC), Karaj, Iran

Materials Science-Poland

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

{"article-title":"Synthesis of Ag-ZnO composites via ball milling and hot pressing processes"}

Ag — 8 wt. % ZnO composites were synthesized by ball milling, heat treating and hot pressing of silver and zinc oxide powder mixtures. The crystalline size and...

Synthesis of Ag-ZnO composites via ball milling and hot pressing processes

Published Online: Mar 26, 2014

Page range: 121 - 125

DOI: https://doi.org/10.2478/s13536-013-0167-8

Keywords
silver matrix composites, hot pressing, crystallite size, microstrain

© 2014 Wroclaw University of Technology

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

Synthesis of Ag-ZnO composites via ball milling and hot pressing processes

Published Online: Mar 26, 2014

Page range: 121 - 125

DOI: https://doi.org/10.2478/s13536-013-0167-8

Keywordssilver matrix composites, hot pressing, crystallite size, microstrain

© 2014 Wroclaw University of Technology

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

Keywords
silver matrix composites, hot pressing, crystallite size, microstrain