Experimental Determination fo Ga Activity in Liquid Ga-Sb-Tl Alloys by EMF Method

Article Preview

Abstract:

EMF of galvanic cell with zirconia –based solid electrolytes was measured to determine the activity of Ga in liquid Ga-Sb-Tl alloys between 946 and 1233 K along the tree pseudobinary lines of Ga-(Sb/Tl), (xSb/xTl = 1/3, 1/1 and 3/1) The cell used was: Ga,Ga2O3|(ZrO2)0.92(Y2O3) 0.08|Ga-Sb-Tl, Ga2O3. The activity of Ga (aGa ) was derived by :-3EF = RT ln aGa , where E is cell potential, F is Faraday’s constant, R is gas constant and T is cell temperature. The activity of Ga shows slight negative deviations from ideality in the section with positive deviation from ideality in the whole composition range. The activity of gallium shows slight negative deviations from Raoult’s law in the section with xSb/xTl = 3/1, moderately positive deviations in xSb/xTl =1/1 section and large positive deviations in xSb/xTl =1/3 section.

You might also be interested in these eBooks

Info:

Periodical:

Solid State Phenomena (Volume 127)

Pages:

71-76

Citation:

Online since:

September 2007

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Iwao Katayama, Jun-ichiro Nakayama, Tetsuya Nakai, Zensaku Kozuka: Trans. JIM, 28(1987), 129-134.

Google Scholar

[2] Iwao Katayama, Keiko Shimazawa, Dragana Zivkovic, Dragan Manasijevic, Zivan Zivkovic, Takamichi Iida: Z. Metallkd., 94(2003), 1296-1299.

Google Scholar

[3] Iwao Katayama, Keiko Shimazawa, Dragana Zivkovic, Dragan Manasijevic, Zivan Zivkovic, Hiromi Yamashita: Thermochim. Acta 431(2005), 138-143.

DOI: 10.1016/j.tca.2005.01.061

Google Scholar

[4] Dragan Manasijevic, Dragana Zivkovic, Iwao Katayama, Zivan Zivkovic: J. Serb. Chem. Soc., 70(1) (2005), 9-20.

DOI: 10.2298/jsc0501009m

Google Scholar

[5] M. Hillert: Calphad 4(1980), 1; F. Kohler: Monatsh. Chem., 91(1960), 738; Y.M. Muggianu et al:J. Chim. Physiq. 72(1975), 83; G.W. Toop: Trans. Met. Soc. AIME 233(1965), 850;K.C. Chou et al: Calphad 20(1996), 395.

Google Scholar

[6] K. Kameda: J. Jpn. Inst. Met., 1(1989), 81.

Google Scholar