Diffusion of Cadmium into Single Crystals of Copper

Hirone, Tokutarô; Kunitomi, Nobuhiko; Sakamoto, Mitsuru; Yamaki, Hideo

doi:10.1143/jpsj.13.838

Cited by 24 publications

(2 citation statements)

References 11 publications

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“…25 In addition, the diffusion coefficient of Cd in copper, D Cd , measured in the same paper at 800°C 25 is about 10 times smaller than the value measured more recently. 26 Assuming a similar deviation with respect to the old value of D Al yields a modified value of D Al , D Al …”

Section: Oxidation Of Binary Cu-al Alloysmentioning

confidence: 99%

High-Temperature Scaling of Cu–Al and Cu–Cr–Al Alloys: An Example of a Non-Classical Third-Element Effect

2006

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The oxidation of three Cu-xCr-2Al and three Cu-xCr-4Al alloys (x @ 0,4,8 at.%) has been investigated at 800°C in 1 atm O 2 . Oxidation of a binary Cu-Al alloy containing 2.2 at.% Al produced external scales composed mainly of copper oxides with small amounts of Al-rich oxide in the inner region, while the internal oxidation of Al was almost absent. The addition of 3.9 at.% Cr to this alloy was able to decrease the oxidation rate but was insufficient to prevent the oxidation of copper. Conversely, addition of 8.1 at.% Cr to the same binary alloy promoted the rather fast formation of a protective Al 2 O 3 layer in contact with the metal substrate, with a simultaneous large decrease in the oxidation rate, producing a form of third-element effect. On the contrary, all the Cu-xCr-4Al alloys formed an internal Al 2 O 3 layer after an initial stage during which all the alloy components were oxidized, so that the only effect of the presence of chromium was to decrease the duration of the fast initial stage. The third-element effect due to chromium additions to Cu-2Al is related to a transition from the formation of external scales composed of mixtures of Cu and Al oxides to the external growth of Al 2 O 3 -rich scales as a consequence of a thermodynamic destabilization of copper oxides associated with the formation of solid solutions between Al 2 O 3 and Cr 2 O 3 .

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Section: Oxidation Of Binary Cu-al Alloysmentioning

confidence: 99%

High-Temperature Scaling of Cu–Al and Cu–Cr–Al Alloys: An Example of a Non-Classical Third-Element Effect

2006

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“…A satisfactory explanation of this must deal with the electronic structure of the alloy around H in steel (ID, 7D. 15D) Cd in Cu (16) Deuterium in steel UD) D (Fe) in dil. Fe alloys (27) H in Ag and steel…”

Section: Off Diagonal Termsmentioning

confidence: 99%