Alumina-Toughened-Zirconia with Low Wear Rate in Ball-on-Flat Tribological Tests at Temperatures to 500 °C

Materials

Magdalena Ziąbka¹  Zbigniew Pędzich¹  Agnieszka Wojteczko¹  Kamil Wojteczko¹  Grzegorz Wiązania²  Marek Grabowy³  Maciej Łuszcz⁴ 

[1] Department of Ceramics and Refractory Materials, Faculty of Materials Science and Ceramics, AGH—University of Science and Technology, 30 Mickiewicz Av., 30-059 Krakow, Poland;Department of Machine Design and Technology, Faculty of Mechanical Engineering and Robotics, AGH—University of Science and Technology, 30 Mickiewicz Av., 30-059 Krakow, Poland;IEN Institute of Power Engineering, Ceramics Division CEREL, 8 Mory St., 01-330 Warsaw, Poland;Łukasiewicz Research Network—Institute for Sustainable Technologies, 6/10 Pułaski St., 26-600 Radom, Poland;

关键词: alumina toughened zirconia;    tribology;    sliding wear;    ball-on-disc test;   

DOI  :  10.3390/ma14247646

来源: DOAJ

【 摘 要 】

An alumina-toughened zirconia (ATZ) material, fabricated using a procedure consisting of the common sintering of two different zirconia powders, was tested using the ball-on-disc method in a temperature range between room temperature and 500 °C. Corundum balls were used as a counterpart. The ATZ composite behaviour during tests was compared with that of commonly used α-alumina and tetragonal zirconia sintered samples. At temperatures over 350 °C, a drastic decrease in the wear rate of the material was detected. SEM analyses proved that, in such conditions, nearly the whole surface of the sliding material was covered with a layer of deformed submicrometric grains, which limited contact with the part of material that was not deformed. The mentioned layer was relatively strongly connected with the material, increased its resistance, and decreased its coefficient of friction. As a reference, commonly used materials, namely commercial alumina and tetragonal zirconia, were tested. The wear parameters of the composite were significantly better than those registered for the materials prepared of commercial powders.

【 授权许可】

Unknown