4 results match your criteria: "The Nippon Dental University 1-8 Hamaura-cho[Affiliation]"
Effects of heat treatments and Sn, Ga and In additives on mechanical properties of 35Ag-30Pd-20Au-15Cu alloy.
Dent Mater J
December 2004
Department of Dental Materials Science, School of Dentistry at Niigata, The Nippon Dental University 1-8 Hamaura cho, Niigata city, Niigata 951-8580, Japan.
The mechanical properties of six 35Ag-30Pd-20Au-15Cu alloys containing different contents (2% and 4%) of Sn, Ga, or In and a 35Ag-30Pd-20Au-15Cu alloy without additives were evaluated. These alloys were subjected to four different heat treatments before a mechanical test. The distribution of the elements and their contents were analyzed.
View Article and Find Full Text PDFStudy of resin-bonded calcia investment. Part 3: Hardness of titanium castings.
Dent Mater J
March 2004
Department of Dental Materials Science, School of Dentistry at Niigata, The Nippon Dental University 1-8 Hamaura-cho, Niigata City, Niigata 951-8580, Japan.
The Vickers hardness of the cross-sectioned area of titanium castings made from an experimental resin-bonded calcia investment and three commercial investments was evaluated. The microstructure and element distribution of the surface zone were analyzed using an EPMA. The results showed that the high hardness of the casting surface could be decreased using the experimental investment.
View Article and Find Full Text PDFDevelopment of casting investment preventing blackening of noble metal alloys Part 2. Application of developed investment for type 4 gold alloy.
Dent Mater J
September 2003
Department of Dental Materials Science, School of Dentistry at Niigata, The Nippon Dental University 1-8 Hamaura-cho, Niigata City, Niigata, 951-8580, Japan.
The objective of this study was to evaluate the efficacy of the developed investment for the prevention of blackening of a cast Type 4 gold and to analyze the oxides on its surface in relation to the blackening of the alloy. The experimental investments were prepared using a gypsum-bonded investment in which boron (B) or aluminum (Al) was added as a reducing agent. A Type 4 gold alloy was cast into the mold made of the prepared investment.
View Article and Find Full Text PDFDevelopment of casting investment preventing blackening of noble metal alloys part 1. Application of developed investment for Ag-Pd-Cu-Au alloy.
Dent Mater J
March 2003
Department of Dental Materials Science, School of Dentistry at Niigata, The Nippon Dental University 1-8 Hamaura-cho, Niigata City, Niigata, 951-8580, Japan.
The objective of this study is to develop a casting investment that prevents the blackening of the cast surface of noble metal alloys. The experimental investments were prepared using a gypsum-bonded investment in which the metallic powders such as boron (B), silicon (Si), aluminum (Al) and titanium (Ti) were added as oxidizing agents. An Ag-Pd-Cu-Au alloy was cast into the mold made of the prepared investment.
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