title: [Study of the mechanical properties of CP Ti ceramic alloy after recasts].
abstract: OBJECTIVE
  To investigate the influences of repeated casting on the mechanical properties of CP Ti ceramic alloy.
  
  
  METHODS
  CP Ti ceramic alloy samples were prepared and recast 3 times without adding any new CP Ti ceramic alloy. The physical properties of each specimen were measured. SPPPSS13.0 software package was used for statistical analysis.
  
  
  RESULTS
  No significant difference was found on the flexural strength of the CP Ti ceramic alloys that had been cast 2 or 3 times, compared with that of the alloys being cast only 1 time (P>0.05). However, the flexural modulus, tensile strength, 0.2% yield strength and surface microhardness of the CP Ti alloys being cast 2 or 3 times were significantly higher than those of the alloys being cast only 1 time (P<0.05). Elongation of the CP Ti alloys being cast 2 or 3 times was significantly lower than that of the alloys being cast only 1 time (P<0.05).
  
  
  CONCLUSIONS
  Recasting may cause decreases in tensile properties of CP Ti ceramic alloy.
authors: Department of Prosthodontics,Affiliated Stomatology Hospital of Fujian Medical University. Fuzhou 350002,China.E-mail:234777953@qq.com.
authors: Song
authors: S
authors: Yang
authors: Hui
authors: H
authors: Cheng
authors: Xiu-rong
authors: XR
authors: Li
authors: Wei-qing
authors: WQ
authors: Wu
authors: Ming
authors: M
authors: Zheng
authors: Ying-hui
authors: YH
authors: Wang
mesh_terms: D002516:Ceramics; D003722:Dental Alloys; D006244:Hardness; D008422:Materials Testing; D013718:Tensile Strength; D014025:Titanium
chemical_list: D003722:Dental Alloys; D014025:Titanium