Variations of color with alloying elements in Pd-free Au–Pt-based high noble dental alloys
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The effects of alloying addition of a small amount of base metals (In, Sn, Fe, Zn) on color variations in Pd-free Au-Pt-based high noble dental alloys were investigated in terms of rectilinear and polar color coordinates. The ternary Au-Pt-X (X = In, Sn, Fe, Zn) and quaternary Au-Pt-In-Y (Y = Sn, Fe, Zn) alloys were prepared from high purity component metals. The amount of alloying base metals, X and Y, were restricted up to 2 at.%. The alloying addition of a small amount of Fe, In, Sn, to a binary Au-10 at.% Pt alloy (referred to as AP10) effectively increased chroma, C*. On the other hand, the addition of Zn to the parent alloy AP10 did not change color coordinates greatly. The increase in chroma in the present Au-Pt-based high noble alloys was attributed to the increase in the slope of spectral reflectance curve at its absorption edge near 515 nm. It was found that the addition of a small amount of Fe to the parent alloy AP10 markedly increased lightness, L*, and the addition of Sn gave a very light tint of red to the parent alloy. Although red-green chromaticity index a* contributed to chroma to some extent, contribution of yellow-blue chromaticity index b* was much greater in determining chroma in this Pd-free Au-Pt-based multi-component alloys. The present results are expected to be valuable in case color is to be taken into account in designing Pd-free Au-Pt-based high noble dental alloys.
Materials Science and Engineering: B, 140(3), pp.147-152; 2007
収録刊行物
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- Materials Science and Engineering: B
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Materials Science and Engineering: B 140 (3), 147-152, 2007-06-15
Elsevier B.V.
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詳細情報 詳細情報について
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- CRID
- 1050005822262834816
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- NII論文ID
- 120006984272
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- NII書誌ID
- AA10720431
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- ISSN
- 09215107
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- HANDLE
- 10069/23664
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- IRDB
- CiNii Articles