Activity of zinc in the liquid Bi-In-Sn-Zn alloys determined by knudsen method
The Knudsen effusion method was used for measurements of mass loss rate of liquid Bi-In-Sn-Zn alloys, in the temperature range from 572 to 768 K. The studies were carried out for the alloys with the ratio of Bi:In:Sn equal 2:6:2, 2:2:6 and 8:1:1. The obtained results were used for the calculation of...
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Veröffentlicht in: | Archives of metallurgy and materials 2012-10, Vol.57 (3), p.837-843 |
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Sprache: | eng |
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Zusammenfassung: | The Knudsen effusion method was used for measurements of mass loss rate of liquid Bi-In-Sn-Zn alloys, in the temperature range from 572 to 768 K. The studies were carried out for the alloys with the ratio of Bi:In:Sn equal 2:6:2, 2:2:6 and 8:1:1. The obtained results were used for the calculation of zinc vapour pressure over liquid Bi-In-Sn-Zn alloys and next the activity of zinc in the Bi-In-Sn-Zn liquid phase. It was found that for the investigated alloys the activity of zinc shows the considerable positive deviation from the Raoult’s law.
Stosujac efuzyjna metode Knudsena pomierzono szybkosc ubytku masy cynku z ciekłych stopów Bi-In-Sn-Zn, w zakresie temperatur od 572 do 768 K. Badania zostały przeprowadzone dla stopów o stosunku zawartosci molowych Bi:In:Sn równym 2:6:2, 2:2:6 oraz 8:1:1. Wyniki badan zostały wykorzystane do obliczenia równowagowej preznosci par cynku nad ciekłymi stopami Bi-In-Sn-Zn, a nastepnie aktywnosci cynku. Stwierdzono, ze dla zbadanych stopów aktywnosc cynku wykazuje znaczne dodatnie odstepstwa od prawa Raulta. |
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ISSN: | 1733-3490 2300-1909 |
DOI: | 10.2478/v10172-012-0092-6 |