熱処理に伴う高純度アルミニウム中鉛の表面偏析
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The surface segregation of lead in the high-purity aluminum foils containing a small amount of lead annealed at various conditions was studied by Rutherford back scattering spectroscopy (RBS) and transmission electron microscopy (TEM). The foils containing 0.13 and 13 at-ppm Pb were annealed for 1.8~72 ks at 473~923 K. The annealing at higher temperature and for longer time enhanced segregation of the lead at foil surface region, but TEM-EDS revealed that most of the lead segregated not to the aluminum surface but to the oxide film formed by heat treatment. The oxide film was amorphous phase in all the heat-treated foils. The oxide compositions ranged from 20 to 50 at% Pb, from 10 to 50 at% O and remained Al depending on the position. The surface segregation process was discussed.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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