대한치과보철학회지 (The Journal of Korean Academy of Prosthodontics)
- 제22권1호
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- Pages.95-108
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- 1984
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- 0301-2875(pISSN)
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- 2005-3789(eISSN)
치과용(齒科用) 은(銀)-파라디움합금(合金)의 합금원소(合金元素)가 제성질(諸性質)에 미치는 영향(影響)에 관(關)한 연구(硏究)
EFFECTS OF ALLOYING ELEMENTS ON VARIOUS PROPERTIES OF DENTAL SILVER-PALLADIUM ALLOYS
- Kim, Chun-Jin (Department of Prosthodontics, Division of Dentistry, Kyung Hee University) ;
- Park, Nam-Soo (Department of Prosthodontics, Division of Dentistry, Kyung Hee University)
- 발행 : 1984.12.01
초록
Even though the tarnishing and corrosion problems characteristic with dental silver-palladium alloy are not yet fully solved, it is recently widely used because of its low cost. However the effects of major alloying elements on the various properties of this system are not fully understood. The object of this research is to clarify the effects of In and Zn additives on the corrosion and tarnishing resistances and precipitation hardening behavior of this sytem, using electrodynamic polarization, immersion, and Vicker's microhardness test and X-ray diffraction and electron probe micro analysis methods. The obtained results were as follows: I. As indium content is increased, both the corrosion resistance in Cl-solution and microhardness are also increased while the tarnishing resistance is decreased. 2. As Zinc content is increased, the corrosion resistance is decreased, but tarnishing resistance is increased 3. At 70Ag-25Pd-2.5Zn-2.5In composition, the precipitation harding behavior was mot significant. The optimum aging temperature was
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