title: Corrosion and metallurgical study of some porcelain fused to metal alloys.
abstract: In order to evaluate the corrosion behaviour of some dental alloys to be applied as base-metal for PFM, electrochemical technique and metallurgical investigation were used. Potentiodynamic and potentiostatic tests were carried out under deaerated and aerated conditions in 1% NaCl solution. The results have shown that Ni-Cr alloy has a superior corrosion resistance under deaerated conditions, whereas Co-Cr alloy has a stronger tendency to passivation under aerated conditions. Fe-Cr alloy has demonstrated a poor performance. The results were analyzed on compositional and microstructural bases.
authors.affiliation: Corrosion Dept., Central Metallurgical Research and Development Institute, Helwan, Cairo, Egypt.
authors.forename: W A
authors.initials: WA
authors.lastname: Metwally
authors.forename: A N
authors.initials: AN
authors.lastname: Habib
authors.forename: H A
authors.initials: HA
authors.lastname: Katamish
mesh_terms: D002626:Chemistry, Pharmaceutical; D003343:Corrosion; D003722:Dental Alloys / Q000737:chemistry*; D003776:Dental Porcelain / Q000737:chemistry*; D012994:Dental Soldering; D008422:Materials Testing / Q000379:methods; D008855:Microscopy, Electron, Scanning; D011199:Potentiometry; D013499:Surface Properties
chemical_list: D003722:Dental Alloys; D003776:Dental Porcelain