Investigation of preparation and properties of Ti3SiC2/Al2O3 multilayered composites. Issue 2 (16th November 2022)

• Record Type: Journal Article
• Authors: Chen, Yingying; Ma, Deli; Li, Qinggang; Ji, Jun; Zhang, Zhenyu; Du, Yuhang; Chen, Sique; Yang, Hailing; Wei, Yulin; Shi, Guopu; Pan, Baocai; Wu, Junyan; Wang, Zhi
• Other Names: Fukushima Manabu guestEditor.; Wang Jingyang guestEditor.; Balaya Palani guestEditor.; Kim Young‐Wook guestEditor.; Singh Mrityunjay guestEditor.
• Is Part Of: International journal of applied ceramic technology. Volume 20:Issue 2(2023)
• Page Start: 1248
• Page End: 1259
• Publication Date: 2022-11-16
• Subjects: hot pressing sintering -- tape casting -- Ti3SiC2/Al2O3 multilayered composites; Ceramics -- Periodicals; Ceramics -- Technological innovations -- Periodicals; 620.1405
• DOI: 10.1111/ijac.14268
• Languages: English
• ISSNs: 1546-542X

Abstract

Abstract: Ti3 SiC2 /Al2 O3 multilayered composites were prepared by the combination of tape casting and hot pressing sintering. The slurry was produced by adjusting the amounts of each organic material, including triethyl phosphate (TEP) as a dispersion, polyvinyl butyrate (PVB) as a binder, dioctyl phthalate (DOP) as a plasticizer, and anhydrous ethanol as an organic solvent. When TEP content was 3 wt.%, PVB content was 4.5 wt.%, R ‐value (DOP/PVB) was 1.4, and solid content was 38 wt.%; the cast film with a smooth surface, good flexibility, and uniform thickness was obtained after defoaming, tape casting, and drying. Three samples were prepared, namely, S1–S3. The S1 was monolithic Ti3 SiC2 /Al2 O3 (mass ratio is 1:1) composites. S2 and S3 were Ti3 SiC2 /Al2 O3 multilayered composites, which matrix layers were Ti3 SiC2 /Al2 O3 composites (mass ratio is 1:1) and Al2 O3, respectively, and their interface layer was Ti3 SiC2 . S1–S3 were also sintered at 1550°C. The bending strength of multilayered materials were lower than that of monolithic material, but the fracture toughness of multilayered materials significantly increased. Due to the introduction of Ti3 SiC2 interface layer, the friction coefficient and wear rate of Ti3 SiC2 /Al2 O3 multilayered composites were reduced by 30.7% and 33.8%, respectively, compared with monolithic material.