Microstructures of 3 mol% yttria-stabilized zirconia (3YSZ) with different content of TiN were investigated in this study by XRD, SEM, and TEM. The specimens were hot-pressing sintered at 1450 degrees C for 2.5 h under 50 MPa in vacuum, and then further characterized on microstructure change and phase distribution. The TiN added to 3YSZ can suppress tetragonal (t) to monoclinic (m)-3YSZ phase transformations, reduce 3YSZ grain size, and improve its mechanical properties. The ceramic was formed of homogeneously dispersed 3YSZ and TiN grains with average size of 0.7 and 1 mu m, respectively. The coexistence of t- and m-phases was observed in one grain, and the nucleation of m-phase with acicular twin occurred preferentially at grain boundaries of t- phase. The TEM analysis was focused on the 3YSZ-30 wt% TiN specimens in order to identify the relationships between t- and m-structures, and twin structures of m-phase. Two crystallographic relations of t- to m-transformation are (100)(m)//(110)(t), [010](m)//[001](t) in type I, and (100)(m)//(110)(t), [001](m)//[001](t) in the type II. The acicular (100)(m) and lathlike (110)(m) twins in m-phase were also observed.
机构:
Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R ChinaShanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
Wang, Xin-Gang
Liu, Ji-Xuan
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Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R ChinaShanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
Liu, Ji-Xuan
Kan, Yan-Mei
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Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R ChinaShanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
Kan, Yan-Mei
Zhang, Guo-Jun
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Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R ChinaShanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
机构:
School of Electromechanical Engineering, Guangdong University of Technology, GuangzhouSchool of Electromechanical Engineering, Guangdong University of Technology, Guangzhou
Wei W.
Yu J.
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School of Electromechanical Engineering, Guangdong University of Technology, GuangzhouSchool of Electromechanical Engineering, Guangdong University of Technology, Guangzhou
Yu J.
Liu W.
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School of Electromechanical Engineering, Guangdong University of Technology, GuangzhouSchool of Electromechanical Engineering, Guangdong University of Technology, Guangzhou
Liu W.
Guo W.
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School of Electromechanical Engineering, Guangdong University of Technology, GuangzhouSchool of Electromechanical Engineering, Guangdong University of Technology, Guangzhou
Guo W.
Lin H.
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School of Electromechanical Engineering, Guangdong University of Technology, GuangzhouSchool of Electromechanical Engineering, Guangdong University of Technology, Guangzhou
Lin H.
Guo, Weiming (zhanghaijun@wust.edu.cn),
1600,
Chinese Ceramic Society
(48):
: 375
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380
机构:
Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R ChinaKatholieke Univ Leuven, Dept Met & Mat Engn, B-3000 Louvain, Belgium
Guo, Wei-Ming
Vleugels, Jef
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Katholieke Univ Leuven, Dept Met & Mat Engn, B-3000 Louvain, BelgiumKatholieke Univ Leuven, Dept Met & Mat Engn, B-3000 Louvain, Belgium
Vleugels, Jef
Zhang, Guo-Jun
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Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R ChinaKatholieke Univ Leuven, Dept Met & Mat Engn, B-3000 Louvain, Belgium
Zhang, Guo-Jun
Wang, Pei-Ling
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Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R ChinaKatholieke Univ Leuven, Dept Met & Mat Engn, B-3000 Louvain, Belgium
Wang, Pei-Ling
Van der Biest, Omer
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Katholieke Univ Leuven, Dept Met & Mat Engn, B-3000 Louvain, BelgiumKatholieke Univ Leuven, Dept Met & Mat Engn, B-3000 Louvain, Belgium