The Effect of Perlite Addition on Erosive Wear Behavior of Alumina Ceramics

S. Tasa, E. Ercenkb and S. Yilmazb aIstanbul Technical University (ITU), Department of Mechanical Engineering, Gumussuyu, Istanbul 34437, Turkey bSakarya University, Engineering Faculty, Department of Metallurgical and Materials Engineering, Esentepe Campus, 54187 Sakarya, Turkey

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In this study, the effects of perlite addition on mechanical properties and wear resistance of alumina ceramics were investigated. Alumina powders including perlite 5%, 10%, 15%, 20% and perlite free were prepared. These powders were shaped as rectangular by using uniaxial pressing system under the load of 100 MPa. The samples were sintered at 1400°C-1550°C for 2 h and were subjected to some mechanical tests such as hardness and fracture toughness. X-ray diffraction analysis was employed to determine the crystalline phases. Bulk densities of the samples were measured. In addition, erosive wear test was performed to investigate the erosive wear resistance of the samples. The wear test results were presented depending on different sliding speed and sintering temperature. These results showed that perlite addition has a positive effect on erosive wear resistance of the alumina ceramics, generally.

DOI: 10.12693/APhysPolA.125.632 PACS numbers: 81.05.Je, 81.05.Mh, 46.55.+d, 62.20.F-, 81.20.Ev