Microstructural Characterization of Zirconia and Titanium System Prepared by Powder Sintering

• Main Authors: Wei-Chen Wang, 王偉宸
• Other Authors: Chien-Cheng Lin
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/17363456843161914776

碩士 === 國立交通大學 === 材料科學與工程系所 === 93 === Abstract Sintering 3 mol. % Y2O3-ZrO2 was reacted with titanium at temperatures ranging from 1300°C to 1500°C for 1 hour in argon atmosphere. The Microstructure of the reaction was characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). With different atomic percent of titanium and zirconia in samples, it was expressed as AT / BZ (A mean the atomic percent of titanium; B mean the atomic percent of zirconia). TEM analysis confirmed the α-Ti and c-ZrO2 in sample 90T/10Z at 1500°C; c-ZrO2 and β�S-Ti (orthorhombic) were present in sample 70T/30Z at 1400°C. Ti2ZrO (orthorhombic) was precipitated from α-Ti in samples 90T/10Z, 70T/30Z and 50T/50Z at 1400°C and 1300°C, 1500°C and 1400°C, and 1400°C, respectively. TEM analysis show that cubic TiO particle was located between α-Ti and t-ZrO2-x grains in sample 30T/70Z; cubic TiO and t-ZrO2-x were also present in sample 10T/90Z. For sample 10T/90Z in 1500°C, cubic ZrO was identified by XRD and the lattice parameter of cubic ZrO was 4.602 Å, space was Fm m.