粉体および粉末冶金
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
受賞記念講演
酸化物セラミックス中の拡散現象と格子欠陥
羽田 肇坂口 勲大橋 直樹両見 春樹伊東 純一
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ジャーナル オープンアクセス

2006 年 53 巻 1 号 p. 11-20

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抄録
Diffusion phenomena and lattice defects in ceramics are discussed. The properties of ceramics are classified broadly into tow groups, one is that the properties are controlled by crystal structure and composition, called "intrinsic" properties. The other is that properties are affected by lattice defects and/or impurities, called "extrinsic". We commonly used the later properties of functional ceramics such as electorceramics. Electrical conductivities and optical emission properties are typical examples. We characterized impurities and diffusion properties in oxides ceramics, using a secondary ion mass spectroscopy (SIMS). By comparing diffusion coefficients and some properties, we identified the original defects governing the properties. The oxygen diffusion coefficients of thin films were also evaluated, and the concerned defects was shown to be in metastable.
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© 2006 一般社団法人粉体粉末冶金協会

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