著者
乾 一代 大西 宏司 河波 利夫
出版者
The Society of Powder Technology, Japan
雑誌
粉体工学会誌 (ISSN:03866157)
巻号頁・発行日
vol.30, no.2, pp.80-87, 1993
被引用文献数
3

The wear characteristics of ZrO<sub>2</sub> balls, which were prepared under several conditions, were investigated.<br>The wear loss of ZrO<sub>2</sub> balls was attributed to the materials of the tank, such as Al<sub>2</sub>O<sub>3</sub>, ZrO<sub>2</sub>, and urethane. The wear loss of ZrO<sub>2</sub> balls using a mill with an Al<sub>2</sub>O<sub>3</sub> lining was larger than that using a mill with ZrO<sub>2</sub> or urethane. This result indicated that the wear particles of the Al<sub>2</sub>O<sub>3</sub> lining worn by ZrO<sub>2</sub> balls attacked the surface of the ZrO<sub>2</sub> balls and promoted the wear of the balls, because Al<sub>2</sub>O<sub>3</sub> particles are harder than ZrO<sub>2</sub> balls.<br>Also, the wear loss of the ZrO<sub>2</sub> balls depended mainly on the grain size, fracture toughness and strength of the balls.<br>The SEM of the worn surface showed some defects and pores, and the wear mode was primarily intergranular.<br>It was supposed that phase transformation also had an influence on the wear of the balls.