Articles
  • Investigation of wear properties of mullite and aluminium titanate added porcelain ceramics

  • T. Boyraza and A. Akkusb,*

  • aCumhuriyet University, Department of Metallurgical and Materials Engineering, Turkey
    bCumhuriyet University, Department of Mechanical Engineering, Sivas, Turkey

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this study, the effects of aluminium titanate and mullite added porcelain ceramic composites produced by the traditional ceramic production process on the wear behaviour of the applied load and time were investigated. Aluminium Titanate (Al2TiO5) and Mullite (3Al2O3.2SiO2) ceramics were synthesized by reaction sintering from Al2O3, SiO2 and TiO2 powders consisting of homogenization by wet ball milling followed by sintering Al2TiO5 (AT) and 3Al2O3.2SiO2 (M) in atmosphere conditions at 1,550 oC for 2 h and 1,400 oC for 2 h, respectively. AT and M in amounts of 0 and 20 wt.% were mixed with Porcelain (P). AT and M reinforced porcelain ceramics were prepared by the powder metallurgy route. After drying, the powders were compressed to preforms of 56 ´ 12 ´ 10 mm by uniaxial pressing at 200 MPa. The green compacts were sintered at 1100-1200 oC for 1-5 h in air. Investigations were carried out, on the effect of addition of Al2TiO5 and 3Al2O3.2SiO2 in terms of physical properties, microstructure, XRD phases, as well as wear and mechanical properties of 3Al2O3.2SiO2 and Al2TiO5-reinforced porcelain ceramic composites. Phase and microstructural characterizations of the sintered materials were carried out by using X-ray diffraction technique (XRD) and scanning electron microscope (SEM). The Micro Vickers hardness testing was performed using the Shimadzu HMV-MIII hardness tester. PLINT brand abrasion tester was used for the abrasion tests of ceramics. As a result, as the load and time increased in all samples, the amount of wear increased. While the wear volume in the P sample under 70 N load for 5 min was 5.15 ´ 10-2 mm3, it reached 33.33 ´ 10-2 mm3 in 20 min under 120 N load. Similarly, these values were measured as 0,66 ´ 10-2 mm3 and 5.48 ´ 10-2 mm3 in the PAT sample, 1.09 ´ 10-2 mm3 and 7.41 ´ 10-2 mm3 in the PM sample and 1.75 ´ 10-2 mm3 and 38.44 ´ 10-2 mm3 in the PMAT sample. M and AT additives improve the wear properties of porcelain, while M and AT both have negative effects on wear


Keywords: Aluminium Titanate, Mullite, Porcelain, characterization, hardness, wear

This Article

  • 2021; 22(2): 226-231

    Published on Apr 30, 2021

  • 10.36410/jcpr.2021.22.2.226
  • Received on Oct 30, 2020
  • Revised on Feb 1, 2022
  • Accepted on Feb 5, 2021

Correspondence to

  • A. Akkus

  • Cumhuriyet University, Department of Mechanical Engineering, Sivas, Turkey
    Tel : +90 530 527 6051

  • E-mail: aakkus@cumhuriyet.edu.tr