English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The wet grinding of α-alumina powder with water is known to cause formation of aluminum tri-hydroxide on the particle surface of the powder by mechanochemical effects. The present authors have found that wet submicron-grinding of α-alumina powder using polyacrylic ammonium (PAN) as a dispersant can be performed without generation of hydroxide on the particle surface. In this study, the relationship between the amount of PAN and the formation of aluminum tri-hydroxide in wet rotation ball milling of α-alumina powder using water as a solvent was investigated. Without addition of PAN, hydroxide generated on the particle surface of α-alumina powder after 24-h grinding. On the other hand with the addition of 1.7mass% PAN, hydroxide did not generate after 168-h grinding. PAN was considered to be absorbed onto the AlOH2+ sites of the particle surface of α-alumina powder and, thus, to disturb the generation of hydroxide. Grinding efficiency was not improved by addition of PAN during submicron grinding.

Influence of Polyacrylic Ammonium Addition on Submicron Grinding of α-Alumina Powder Using Wet Rotation Ball Milling