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Microstructure and Segregation Behavior of Palladium in Silver-Copper-Palladium Alloys

Department of Materials Science and Engineering, National Cheng-Kung University, Tainan, Taiwan, ROC

J.H. Chern Lin

Department of Materials Science and Engineering, National Cheng-Kung University, Tainan, Taiwan, ROC

C.P. Ju

Department of Materials Science and Engineering, National Cheng-Kung University, Tainan, Taiwan, ROC

It has been reported that the addition of palladium can modify the microstructure and improve the properties of Ag-Cu eutectic alloy as well as admixed Cu-rich amalgam. The purpose of this work was to study the microstructure and segregation behavior of palladium in a series of Ag-Cu-Pd alloys. All microstructural and microchemical results consistently indicated a strong tendency for palladium to form the ordered Cu3Pd superlattice in the copper-rich phase of the present ternary alloys. Transmission electron microscopic examination indicated that, in addition to the large Cu-rich particles, numerous small (typically tens of nanometers) Cu-rich particles were distributed in the Ag-rich phase. In the alloys containing 10 and 15 wt% Pd, the Cu3Pd superlattice had an L1 ₂-type crystal structure. In the alloy containing 20 wt% Pd, the Cu ₃Pd had a periodic (regular) APB structure. The solubility of palladium in the Cu-rich phase was always much larger than that in the Ag-rich phase. The ratio of the palladium concentration in the copper-rich phase to that in the silver-rich phase decreased with the overall palladium content.

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Journal of Dental Research, Vol. 75, No. 7, 1497-1502 (1996)
DOI: 10.1177/00220345960750071001


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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Chen, K.I. Articles by Ju, C.P. Search for Related Content PubMed PubMed Citation Articles by Chen, K.I. Articles by Ju, C.P. Pubmed/NCBI databases Compound via MeSH Substance via MeSH Hazardous Substances DB COPPER, ELEMENTAL PALLADIUM SILVER COMPOUNDS SILVER, ELEMENTAL Social Bookmarking                         What's this?