title: Microporosity in casting alloys.
abstract: Three series of tensile test pieces were produced using a nickel base partial denture casting alloy. For the first series induction heating was employed, for the second a resistance crucible, and for the third an oxy-acetylene torch. Samples from each series were sectioned longitudinally, mounted, polished and examined microscopically for evidence of microporosity.
mesh_terms: D002248:Carbon Monoxide; D003722:Dental Alloys; D003735:Dental Casting Technique; D003832:Denture, Partial, Removable; D005740:Gases; D006859:Hydrogen; D009532:Nickel; D009584:Nitrogen; D010100:Oxygen; D012995:Solubility; D013461:Sulfur Oxides
chemical_list: D003722:Dental Alloys; D005740:Gases; D013461:Sulfur Oxides; D009532:Nickel; D002248:Carbon Monoxide; D006859:Hydrogen; D009584:Nitrogen; D010100:Oxygen