Study on Microstructure and Nanomechanics Properties of Antibacterial Bone China
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第3期
论文作者：ZHOU Hongxiu Zhang Taihua Li Hongqi Zhang Jin Zhang Zhenyu Wang Lijuan
Key words：AFM; nanoindenter; characterization; nanomechanics; antibacterial ceramic; rare earths;
Abstract: Fracture appearance, surface and nanomechanics properties of antibacterial ceramics contairing rare earth phosphate composite antibacterial materials were characterized and measured by SEM, AFM and Nanoindenter, respectively. Results show that grain of fracture surface of antibacterial ceramics grows uniform refinement topography of bubble break-up appears at the surface, which is flat and has liquid character, by adding the phosphate composite containing rare earth, nevertheless needle-like crystal and granular outgrowth form at fracture surface and surface of common ceramics, respectively. Young's modulus of antibacterial ceramic film is 74. 397 GPa and hardness is 8. 134 GPa, which increses by 4.4% and 1.6% comparing with common ceramics, respectively. Loading curves of two kind of ceramics have obvious nonlinear character under 700 nm and linear character between 700 ～ 1000 nm, and unloading curve have obvious linear character.
ZHOU Hongxiu1，Zhang Taihua2，Li Hongqi3，Zhang Jin4，Zhang Zhenyu3，Wang Lijuan4
(1.State Key Lab of Engine Combustion,Tianjin University, Tianjin 300072, China;
2.Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China;
3.Department of Mechanics, Tianjin University, Tianjin 300072, China;
4.School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China)
Abstract:Fracture appearance, surface and nanomechanics properties of antibacterial ceramics contairing rare earth phosphate composite antibacterial materials were characterized and measured by SEM, AFM and Nanoindenter, respectively. Results show that grain of fracture surface of antibacterial ceramics grows uniform refinement topography of bubble break-up appears at the surface, which is flat and has liquid character, by adding the phosphate composite containing rare earth, nevertheless needle-like crystal and granular outgrowth form at fracture surface and surface of common ceramics, respectively. Young''s modulus of antibacterial ceramic film is 74. 397 GPa and hardness is 8. 134 GPa, which increses by 4.4% and 1.6% comparing with common ceramics, respectively. Loading curves of two kind of ceramics have obvious nonlinear character under 700 nm and linear character between 700 ～ 1000 nm, and unloading curve have obvious linear character.
Key words:AFM; nanoindenter; characterization; nanomechanics; antibacterial ceramic; rare earths;
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