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[Physical properties of Au-Pt ceramic alloy after recasting]
Hui Cheng1, Song Yang, Xiurong Li
1Dept. of Prosthodontics, Affiliated Stomatological Hospital, Fujian Medical University, Fuzhou 350002, China.
Objective:
To investigate the influences of recasting on the mechanical properties of Au-Pt ceramic alloy.
Methods:
Au-Pt ceramic alloy samples were prepared and recast for 3 times without adding any new Au-Pt ceramic alloy. The tensile strength, 0.2% yield strength, percentage of elongation, flexural strength, flexural modulus and Vickers hardness of each specimen were measured.
Results:
Being cast for different times, the Au-Pt ceramic alloy showed no significant differences on their tensile strength, 0.2% yield strength, percentage of elongation, flexural strength or Vickers hardness. The flexural modulus of the Au-Pt alloys being cast for 2 or 3 times was significantly higher than that of the alloys being cast for 1 time (P < 0.05). CONCLUSION Au-Pt ceramic alloy can be recast for 3 times at least, without any decrease in the mechanical properties.
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