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[A study of the ageing process in dental Ag-Pd-Cu-Au alloys by anisothermal annealing method (author's transl)]. 1979

K Hisatsune, and M Ohta, and M Yamane

The ageing processes in dental Ag-Pd-Cu-Au alloy were investigated by means of electrical resistivity measurements during anisothermal annealing. The main results obtained are as follows; (1) There are two obvious precipitation processes (stage I and stage II) during anisothermal annealing after quenching from above critical temperature. And the apparent difference in stage I attribute to solution treatment temperature. (2) Stage I occured at lower temperature, is one ageing process by the migration and annihilation of quenched-in excess vacancies. Another is stage II at higher temperature by the diffusion of equilibrium vacancies.

UI MeSH Term Description Entries
D010165 Palladium A chemical element having an atomic weight of 106.4, atomic number of 46, and the symbol Pd. It is a white, ductile metal resembling platinum, and following it in abundance and importance of applications. It is used in dentistry in the form of gold, silver, and copper alloys.
D003300 Copper A heavy metal trace element with the atomic symbol Cu, atomic number 29, and atomic weight 63.55. Copper-63,Copper 63
D006047 Gold Alloys Alloys that contain a high percentage of gold. They are used in restorative or prosthetic dentistry. Gold Alloy,Alloy, Gold,Alloys, Gold
D006358 Hot Temperature Presence of warmth or heat or a temperature notably higher than an accustomed norm. Heat,Hot Temperatures,Temperature, Hot,Temperatures, Hot
D012834 Silver An element with the atomic symbol Ag, atomic number 47, and atomic weight 107.87. It is a soft metal that is used medically in surgical instruments, dental prostheses, and alloys. Long-continued use of silver salts can lead to a form of poisoning known as ARGYRIA.
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor

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