Löslichkeit und Löslichkeitsbeeinflussung in AgCl-Kristallen als Lösungsmittel bei Bildung heterotyper Mischphasen

Wagner, Carl; Zimens, Karl-Erik; Sillén, Lars Gunnar; Linnasalmi, Annikki; Laukkanen, Pentti

doi:10.3891/acta.chem.scand.01-0539

Cited by 18 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, if impurity or alloying element concentration changes during the reaction, and if vacancies of nickel ions in oxide are sensitive to the particular impurity, the parabolic rate law constant will change during the experiment. Wagner and Zimens (6) found in a study of nickel at 1000~ that the parabolic rate law constant decreased as the oxidation progressed.…”

Section: Introductionmentioning

confidence: 96%

“…A number of studies have been made on oxidation of nickel of widely varying purity at temperatures above 600~ (6)(7)(8). These results were summarized in a paper by Kubasehewsky and Goldbeck (9) and correlated with their own measurements.…”

Section: Introductionmentioning

confidence: 99%

“…Evidence exists to show that certain alloying elements affect the rate of oxidation of nickel. Wagner and Zimens (6) have shown that the parabolic rate law" constant of nickel is increased by addition of chromium and manganese. According to Horn (13), the oxidation rate constant for a 6 % chromium-nickel alloy is increased by a factor of 16.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Kinetics of Oxidation of High Purity Nickel

Gulbransen

Andrew

1954

J. Electrochem. Soc.

100

View full text Add to dashboard Cite

The effect of time, temperature, and surface pretreatment on rate of oxidation of high purity nickel is studied for the temperature range of 400~176 using a vacuum microbalance technique. The data are compared to previous studies in the literature and with other metals. Oxidation data are interpreted in terms of the parabolic rate law and classical theory of diffusion.Large deviations from the parabolic rate law are found to occur during the initial stages of reaction and smaller deviations over long periods of time, especially at low temperatures. However, reasonable values of heat and entropy of activation for the over-all reaction can be calculated; these are 41,200 cal/mole and -6.0 entropy units (eu), respectively. Parabolic rate law constants over the temperature range of 550 ~ 700~ are given by A = 3.8 X l~4e-41'~~The negative value for entropy of activation for the over-all reaction when corrected for entropy of formation of the vacancies leads to a value of 1.5 for entropy of activation for diffusion. Theoretical considerations suggest that the latter term should have a value of 1.7-3.3 eu. The good agreement between theoretical and experimental entropies of activation suggests that diffusion is occurring largely through the lattice of nickel oxide and not at grain boundaries, at least for the temperature and time region over which analyses were made.A comparison of present data with older studies in the literature shows a large variation in parabolic rate law constants. These variations are interpreted in terms of impurities increasing the concentration of nickel ion vacancies, KINETICS OF OXIDATION OF NICKEL 131

show abstract

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Kinetics of Oxidation of High Purity Nickel

Gulbransen

Andrew

1954

J. Electrochem. Soc.

100

View full text Add to dashboard Cite

show abstract

“…According to Wagner and Zimens, [10] for metals forming oxide layers consisting of p-type semiconductor, the oxidation rates could be increased by the addition of higher-valency metals than that of the base metal, while it could be decreased by the addition of lower-valency metals. According to Wagner and Zimens, [10] for metals forming oxide layers consisting of p-type semiconductor, the oxidation rates could be increased by the addition of higher-valency metals than that of the base metal, while it could be decreased by the addition of lower-valency metals.…”

mentioning

confidence: 99%

Effect of iron purity on oxidation kinetics at 600 °C to 900 °C

Zhu

Mimura

Chujo

et al. 2006

Metall Mater Trans A

View full text Add to dashboard Cite

“…It must be emphasized that the introduction of the ideal law of mass action does not yield results which are quantitatively correct, for large deviations from the relations for ideal solutions occur, as shown recently by Wagner and Zimens (2). Consequently, it is not possible to draw quantitative conclusions from the concentration corresponding to the maximum of the liquidus curve.…”

Section: Discussionmentioning

confidence: 92%