Lee, Junho Jang, Kyu-bong Lee, Seokhyun Bin Mo, Chan Kim, Hyo-kyu Park, Kyoung Ryeol Kim, Jongsik Bang, Junghwan Jung, In Chul Kim, Jong Cheol Mhin, Sungwook 2024-01-19T09:31:35Z 2024-01-19T09:31:35Z 2023-06-01 2023-06 0272-8842 https://pubs.kist.re.kr/handle/201004/113687 We develop the MgO-ZrO2-TiC (MSZ-TiC) composite for improving the mechanical properties. To increase the mechanical hardness, spark plasma sintering technique was used, enabling rapid heating and subsequent quenching for the stabilization of tetragonal zirconia as well as the formation of the composites. Titanium carbide was applied as reinforcing material to improve the fracture toughness. Also, effect of the sintering temperature on phase evolution of the composite is investigated; with increasing sintering temperature, the monoclinic ZrO2 (m-ZrO2) gradually transforms to tetragonal ZrO2 (t-ZrO2), while maintaining the TiC structure. Combined with material characterization, mechanical properties depending on ZrO2 phase in MSZ-TiC are discussed. As a result, increased hardness (16.3 GPa) and fracture toughness (5.2 MPa m1/2) were observed from optimized MSZ-TiC sintered at 1400 degrees C mainly due to phase transformation of ZrO2. This work can provide an engineering strategy to improve the mechanical properties of ZrO2 based composites, which can be widely applied for industrial application. English Pergamon Press Ltd. Mechanical properties of TiC reinforced MgO-ZrO2 composites via spark plasma sintering Article 10.1016/j.ceramint.2023.02.091 1 Ceramics International, v.49, no.11, pp.17255 - 17260 Ceramics International 49 11 17255 17260 N scie scopus 000987778700001 2-s2.0-85148764207 Materials Science, Ceramics Materials Science Article FRACTURE-TOUGHNESS TETRAGONAL ZRO2 ZIRCONIA MICROSTRUCTURE TRANSFORMATION STABILITY HARDNESS CARBIDE TiC Spark plasma sintering Hardness Fracture toughness