West China Journal of Stomatology

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Study of the mechanical properties of Co-Cr ceramic alloy after recasts

YANG Song1, CHENG Hui1, LI Xiurong2, WU Wei-qing3   

  1. 1. Dept. of Prosthodontics, School & Hospital of Stomatology, Fujian Medical University, Fuzhou 350002, China; 2. Dental Tech Center, School & Hospital of Stomatology, Fujian Medical University, Fuzhou 350002, China; 3. Test Center, Fuzhou University, Fuzhou 350002, China
  • Received:2011-06-25 Revised:2011-06-25 Online:2011-06-20 Published:2011-06-20
  • Contact: CHENG Hui,Tel:0591-83736420

Abstract:

Objective To study the mechanical properties of Co-Cr ceramic alloy after recasts. Methods Co-Cr ceramic alloy cast samples were prepared and recast for 3 times without adding any new Co-Cr 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 Co-Cr ceramic alloy showed no significant differences on their tensile strength, 0.2% yield strength, percentage of elongation, flexural strength, flexural modulus and Vickers hardness. Conclusion Co-Cr ceramic alloy can be recast for 3 times at least, without decrease of the mechanical properties.

Key words: Co-Cr ceramic alloy, recast, mechanical properties