title: [Effect of heat treatment on the structure of a Cu-Zn-Al-Ni system dental alloy].
abstract: This article characterizes the structural phases present in the copper-based metallic alloy system "Cu-Zn-Al-Ni" developed for dental use, and relates those phases to other properties. The characterization was obtained after casting (using the lost wax process), and after heat treatment. In order to obtain better corrosion resistance by changing the microstructure, the castings were submitted to 30, 45 and 60 minutes of heat treatment at the following temperatures: 750 degrees C, 800 degrees C, and 850 degrees C. The various phases were analyzed using X-ray diffraction and scanning electron microscopy (SEM). The results after heat treatment showed a phase (probably Cu3Al), that could be responsible for the improvement in the alloy's resistance to corrosion as compared to the as-cast structure.
authors: Faculdade de Odontología de Bauru Universidade de São Paulo.
authors: A C
authors: AC
authors: Guastaldi
authors: A T
authors: AT
authors: Adorno
authors: C R
authors: CR
authors: Beatrice
authors: J
authors: J
authors: Mondelli
authors: A
authors: A
authors: Ishikiriama
authors: W
authors: W
authors: Lacefield
mesh_terms: D000535:Aluminum; D003300:Copper / Q000737:chemistry*; D003343:Corrosion; D003722:Dental Alloys / Q000737:chemistry*; D003735:Dental Casting Technique; D006358:Hot Temperature; D008855:Microscopy, Electron, Scanning; D009532:Nickel; D014885:Waxes; D014961:X-Ray Diffraction; D015032:Zinc
chemical_list: D003722:Dental Alloys; D014885:Waxes; D003300:Copper; D009532:Nickel; D000535:Aluminum; D015032:Zinc
vernacular_title: Efeito do tratamento térmico na estrutura da liga odontológica do sistema Cu-Zn-Al-Ni.