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RISS 인기검색어
- 검색키워드
- 저자 : T. Boyraz (검색결과 1 건)
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Investigation of wear properties of mullite and aluminium titanate added porcelain ceramics
T. Boyraz,A. Akkus 한양대학교 세라믹연구소 2021 Journal of Ceramic Processing Research Vol.22 No.2
In this study, the effects of aluminium titanate and mullite added porcelain ceramic composites produced by the traditionalceramic 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 powdersconsisting of homogenization by wet ball milling followed by sintering Al2TiO5 (AT) and 3Al2O3.2SiO2 (M) in atmosphereconditions 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 withPorcelain (P). AT and M reinforced porcelain ceramics were prepared by the powder metallurgy route. After drying, thepowders were compressed to preforms of 56 × 12 × 10 mm by uniaxial pressing at 200 MPa. The green compacts were sinteredat 1100-1200 oC for 1-5 h in air. Investigations were carried out, on the effect of addition of Al2TiO5 and 3Al2O3.2SiO2 in termsof 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 carriedout by using X-ray diffraction technique (XRD) and scanning electron microscope (SEM). The Micro Vickers hardness testingwas performed using the Shimadzu HMV-MIII hardness tester. PLINT brand abrasion tester was used for the abrasion testsof ceramics. As a result, as the load and time increased in all samples, the amount of wear increased. While the wear volumein 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 and7.41 × 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 additivesimprove the wear properties of porcelain, while M and AT both have negative effects on wear.
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