Akademik Veri Yönetim Sistemi
JOURNAL OF CERAMIC PROCESSING RESEARCH, cilt.22, sa.2, ss.226-231, 2021 (SCI-Expanded)
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 (3Al(2)O(3)center dot 2SiO(2)) ceramics were synthesized by reaction sintering from Al2O3, SiO2 and TiO2 powders consisting of homogenization by wet ball miffing followed by sintering Al2TiO5 (AT) and 3Al(2)O(3)center dot 2SiO(2) (M) in atmosphere conditions at 1,550 degrees C for 2 h and 1,400 degrees C 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 x 12 x 10 mm by uniaxial pressing at 200 MPa. The green compacts were sintered at 1100-1200 degrees C for 1-5 h in air. Investigations were carried out, on the effect of addition of Al2TiO5 and 3Al(2)O(3)center dot 2SiO(2) in terms of physical properties, microstructure, XRD phases, as well as wear and mechanical properties of 3Al(2)O(3)center dot 2SiO(2) 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 x 10(-2) mm(3), it reached 33.33 x 10(-2) mm(3) in 20 min under 120 N load. Similarly, these values were measured as 0,66 x 10(-2) mm(3) and 5.48 x 10(-2) mm(3) in the PAT sample, 1.09 x 10(-2) mm(3) and 7.41 x 10(-2) mm(3) in the PM sample and 1.75 x 10(-2) mm(3) and 38.44 x 10(-2) mm(3) in the PMAT sample. M and AT additives improve the wear properties of porcelain, while M and AT both have negative effects on wear.