Results 261 to 270 of about 87,628 (306)
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Hardening of Gold-Based Alloys
Journal of Dental Research, 1977The relationships between composition, heat treatment, hardness and microstructure have been investigated for a number of commercial dental casting alloys and for several series of experimental gold-silver-copper compositions. The results indicate that at least two distinct hardening mechanisms must occur in these alloys.
K F, Leinfelder, D F, Taylor
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Journal of Dental Research, 1972
A neodymium glass laser was used to produce weld joints between test pieces of four different casting gold alloys. The mechanical properties of the welds were determined and their microstructures were evaluated. The results of this study indicate that laser welding of dental casting gold alloys is metallurgically feasible.
D L, Smith, A P, Burnett, T E, Gordon
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A neodymium glass laser was used to produce weld joints between test pieces of four different casting gold alloys. The mechanical properties of the welds were determined and their microstructures were evaluated. The results of this study indicate that laser welding of dental casting gold alloys is metallurgically feasible.
D L, Smith, A P, Burnett, T E, Gordon
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Low-gold fixed prosthodontic alloys
The Journal of Prosthetic Dentistry, 1982Abstract Properties, heat treatment characteristics, composition, and microstructure of three low-gold dental casting alloys were studied. The materials exhibited vast compositional differences but strikingly similar structural features. Laboratory evaluation of the properties of these test materials suggest their potential use in fixed ...
E F, Huget, S G, Vermilyea, J M, Vilca
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Chemical Composition of Dental Gold Casting Alloy and Dental Wrought Gold Alloys
Journal of Dental Research, 1969The chemical composition of dental casting gold alloys and dental wrought gold wire alloys was determined by use of a modification of a previously described X-ray emission method. Since 1928 and 1932 there has been little change in either type of alloy; there has been a decrease in platinum content in both, and 1 % nickel is now found in wire alloys.
J D, Eick +3 more
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Plasmonic biocompatible silver–gold alloyed nanoparticles
Chem. Commun., 2014Nanoalloying Ag with Au minimizes nanoparticle surface oxidation and subsequent toxic Ag+ ion release rendering such nanoparticles safer for theranostic applications.
Sotiriou G.A. +5 more
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Samarium-gold and dysprosium-gold alloy systems
Journal of the Less Common Metals, 1973Abstract Phase diagrams of the samarium-gold and dysprosium-gold alloy systems based on microscopic, differential thermal and X-ray diffraction analyses are proposed. Six intermetallic compounds, Dy 2 Au, DyAu, DyAu 2 , DyAu 3 , DyAu 3.6 and DyAu 6 , form in the Dy-Au system.
O.D. McMasters, K.A. Gschneidner
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Observations on gold-palladium-silver and gold-palladium alloys
The Journal of Prosthetic Dentistry, 1980Properties, heat treatment response, structure, and composition of three high-fusing crown and fixed partial denture alloys were studied. Except for elongation, the properties of two gold-palladium-silver based materials were compared to those of a gold-palladium alloy.
S G, Vermilyea, E F, Huget, J M, Vilca
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Dimensional accuracy of small gold alloy castings. Part 2. Gold alloy shrinkage
Australian Dental Journal, 1991AbstractThe extensive literature about the casting shrinkage of gold alloys is reviewed.
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1991
The bulk diffusion of gold into rhodium in thin films has been studied by [13]. Do was found to be 4.2 x 10−11 cm2/s and Q=0.93±0.28 eV. The bulk diffusion coefficients are plotted against reciprocal temperature in Fig. 173. The authors point out that these values of Q and Do are lower than would be expected for lattice diffusion in face-centred cubic ...
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The bulk diffusion of gold into rhodium in thin films has been studied by [13]. Do was found to be 4.2 x 10−11 cm2/s and Q=0.93±0.28 eV. The bulk diffusion coefficients are plotted against reciprocal temperature in Fig. 173. The authors point out that these values of Q and Do are lower than would be expected for lattice diffusion in face-centred cubic ...
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Electropolishing of gold and gold-rich alloys
Micron (1969), 1977Abstract The use of a mixture of sulphuric and hydrochloric acid is proposed for electropolishing gold and gold-rich alloys for study by electron microscopy. The results obtained using the proposed electrolyte are illustrated using an ordered Au4Zn specimen in which different phases of Au3Zn(H) and Au3+Zn can be recognized.
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