title: [Determination of major expansion properties of refractory die material compatible with slip casting core of sintered titanium powder].
abstract: OBJECTIVE
  To determinate major expansion properties of refractory die material.
  
  
  METHODS
  The setting expansion ratio of refractory die material for slip casting core of sintered titanium powder at room temperature was performed, as well as thermal expansion ratio from room temperature to 800 degrees C.
  
  
  RESULTS
  The maximum setting expansion ratio in 2 hours reached 0.3407%; The final setting expansion ratio in 24 hours was 0.3117%; The mean thermal expansion coefficient was mainly in range of 8 x 10(-6)-11 x 10(-6)/degree C; The expansion property seemed very stable after sintering repeatedly and the small shrinkage after sintering could be compensated with the die spacer and setting expansion.
  
  
  CONCLUSIONS
  The expansion properties of the refractory die material that we synthesized can fulfil the application requirements of slip casting core of sintered titanium powder.
authors.affiliation: College of Stomatology, West China University of Medical Sciences.
authors.forename: Y
authors.initials: Y
authors.lastname: Chao
authors.forename: X
authors.initials: X
authors.lastname: Kuang
authors.forename: Y
authors.initials: Y
authors.lastname: Liao
authors.forename: H
authors.initials: H
authors.lastname: Wang
mesh_terms: D003442:Crowns; D008422:Materials Testing; D016876:Metal Ceramic Alloys / Q000737:chemistry*; D011208:Powders; D013696:Temperature; D014025:Titanium
chemical_list: D016876:Metal Ceramic Alloys; D011208:Powders; D014025:Titanium