High-temperature behavior of a Pd-Ag alloy for porcelain.
The mechanism of formation of nodular material on the surface of a Pd-Ag-based alloy for porcelain during pre-porcelainization heat treatment was investigated using scanning electron microscopy, x-ray diffraction, quantitative metallography, and Auger electron spectroscopy. The nodules were found to form by a Nabarro-Herring creep mechanism driven by the internal oxidation of tin and indium. Implications of this process with regard to porcelain bonding and discoloration are discussed.
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003460:Crystallization; D003776:Dental Porcelain; D006047:Gold Alloys; D006358:Hot Temperature; D008855:Microscopy, Electron, Scanning; D010084:Oxidation-Reduction; D010087:Oxides; D010165:Palladium; D013499:Surface Properties
D006047:Gold Alloys; D010087:Oxides; D003776:Dental Porcelain; D010165:Palladium