Study on microstructure and nanomechanics properties of antibacterial bone china

Fracture appearance, surface and nanomechanics properties of antibacterial ceramics containing 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 increases 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.