PMID: 8600006May 1, 1995Paper

X-ray diffraction studies of as-cast high-palladium alloys

Dental Materials : Official Publication of the Academy of Dental Materials
W A BrantleyA B Carr

Abstract

The purpose of this study was to use x-ray diffraction (XRD) to investigate four representative high-palladium alloys in the as-cast condition and obtain new information about the metallurgical phases. Two Pd-Cu-Ga alloys and two Pd-Ga alloys were cast into plate-shaped specimens (20 mm x 1.5 mm) which were bench-cooled. Polished and etched specimens were analyzed using two different x-ray diffractometers and CuKa radiation. All four alloys exhibited strong XRD peaks for the face-centered cubic (fcc) palladium solid solution matrix, and variations in the lattice parameter were consistent with alloy compositions. Comparison of the relative peak intensities for the alloys and the pure palladium powder standard indicated that the as-cast microstructures had preferred crystallographic orientation. Because the two Pd-Cu-Ga alloys contained appreciable amounts of near-surface lamellar interdendritic or eutectic constituents, it was possible to determine previously unreported XRD peaks for the Pd2Ga phase in these alloys. Low-intensity peaks in the Pd-Ga alloys were attributed to small amounts of secondary phases observed in the microstructures. Knowledge of the metallurgical structures of these high-palladium alloys can be important ...Continue Reading

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Jan 1, 1990·Biomaterials·J A HautaniemiA U Yli-Urpo
Oct 1, 1988·Journal of Dental Research·P R MezgerE H Greener
Jan 1, 1986·Journal of Dental Research·A Odén, H Herø
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Citations

Jun 1, 2000·Dental Materials : Official Publication of the Academy of Dental Materials·D W BerzinsN K Sarkar
Aug 1, 2000·Dental Materials : Official Publication of the Academy of Dental Materials·N K SarkarA Prasad
Apr 11, 2003·Dental Materials : Official Publication of the Academy of Dental Materials·W H GuoE Papazoglou
Nov 1, 1996·Dental Materials : Official Publication of the Academy of Dental Materials·W A BrantleyT L Barr
Nov 7, 1999·Dental Materials : Official Publication of the Academy of Dental Materials·Z CaiW A Brantley
Mar 7, 2008·Journal of Oral Rehabilitation·S K Al-SalehiC McLeod
Mar 2, 2006·International Endodontic Journal·I IslamA U J Yap
Jun 26, 2007·Dental Clinics of North America·Daniel A Givan

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