Title インジウムを添加した Ag-Au-Cu-Pd 系合金の物性 Author(s) 時崎, 照彦 ; 服部, 雅之 ; 小田, 豊 Journal 歯科材料器械, 26(5-6): URL Right Post

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Title インジウムを添加した Ag-Au-Cu-Pd 系合金の物性 Author(s) 時崎, 照彦 ; 服部, 雅之 ; 小田, 豊 Journal 歯科材料器械, 26(5-6): 367-374 URL

1 Title インジウムを添加した Ag-Au-Cu-Pd 系合金の物性 Author(s) 時崎, 照彦 ; 服部, 雅之 ; 小田, 豊 Journal 歯科材料器械, 26(5-6): URL Right Posted at the Institutional Resources for Unique Colle Available from

2 Properties of Ag-Au-Cu-Pd system alloys contained with indium 1

3 In this study, Ag-Au-Cu-Pd system alloys consisted of 5 or 10 mass% indium were experimentally developed. The mechanical properties in term of tensile strength, yield strength, elongation and Vickers hardness were evaluated. The corrosion resistance was evaluated with the amount of released element and the potentiodynamic polarization profiles. Tarnish tests in 0.1 mol/l sodium sulfide were also carried out. Results were compared with commercial silver-palladium-gold alloy and examined comparatively. The extent of mechanical properties of these alloys were as follows; yield strength: MPa, tensile strength: MPa, elongation: , Vickers hardness The transpassive potentials of these experimental alloys were mv and the amounts of released element were µg/cm 2 7 days. The addition of indium in Ag-Au-Cu-10mass%Pd system alloys is effective to improve the tensile strength and tarnish resistance. The findings imply that the 25Au-37.5Ag-15Cu-10Pd-2Zn-10In-0.5Ir alloy is applicable in dental practice mass % 2

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10 Ag-Au-Cu-Pd 40 mass mass

11 2Berzinz DB, Kawashima I, Graves R, Sarkar NK. Electrochemical characteristics of high-pd alloys in relation to Pd-allergy. Dent Mater 2000 ; 16: Wataha JC, Hanks CT. Biological effects of palladium and risk of using palladium in dental casting alloys. J Oral Rehabil 1993;23: ISO 22674: DentistryMetallic 13 materials for fixed and removable 1961(2)817 restorations and appliancesthe International Organization for 14 Standardization. ( 1953; 53: (26) Johnson G.H, Bales DJ, Powell LV. 6JIS T Effect of admixed indium on the clinical success of amalgam restorationsoper 7 Dent ISO 10271: 2001,Dental metallic materials-corrosion test methods. The International Organization for Standardization p ) JIS T mass% Pd JIS T ) : - 20Uligh HH, Revie RW : : 10

12 . 1995; 23:

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14 2 µ Ag Cu Pd Zn In S

15 3 (MPa) a A b,c B b,c C B A b a C B c b S12 N=6.

16 4 (%) S12.

17 a b b c b a d S12.

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20 8 (mv vs SCE) a a a b b c a S12

21 9 L* a a a A A A a a a b S12 B B A A

22 10 *ab c c a a a,b b b S12

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Helicobacter pylori H. pylori H. pylori Helicobacter pylori TitleHelicobacter pylori 感染症 Author(s) 森下, 鉄夫 Journal 歯科学報, 105(1): 22-31 URL http://hdl.handle.net/10130/186 Right Posted at the Institutional Resources for Unique Colle Available from http://ir.tdc.ac.jp/

Title インジウムを添加した Ag-Au-Cu-Pd 系合金の物性 Author(s) 時崎, 照彦 ; 服部, 雅之 ; 小田, 豊 Journal 歯科材料 器械, 26(5-6): URL Right Post

Title インジウムを添加した Ag-Au-Cu-Pd 系合金の物性 Author(s) 時崎, 照彦 ; 服部, 雅之 ; 小田, 豊 Journal 歯科材料器械, 26(5-6): URL Right Post