Acta Metall Sin  1987, Vol. 23 Issue (1): 132-137    DOI:

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CHEMICAL DIFFUSION IN CALCIA-STABILIZED ZIRCONIA CERAMIC

DOU Shixue (Northeast University of Technology.Shenyang);MASSON;C.R. (Atlantic Research Laboratory;NRC of Canada;Halifax.NS);PACEY;P.D. (Dalhousie University.Halifax.NS Canada)

DOU Shixue (Northeast University of Technology.Shenyang);MASSON;C.R. (Atlantic Research Laboratory;NRC of Canada;Halifax.NS);PACEY;P.D. (Dalhousie University.Halifax.NS Canada). CHEMICAL DIFFUSION IN CALCIA-STABILIZED ZIRCONIA CERAMIC. Acta Metall Sin, 1987, 23(1): 132-137.

Abstract References Related Articles Recommended Metrics Download:  PDF(515KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Chemical diffusion of oxygen in calcia-stabilized zirconia(CSZ)with impu- rifles of Al_2O_3,SiO_2,MgO,Fe_2O_3 and TiO_2 was studied by the non-steady state permeation and the desorption techniques at 960—1450℃.The concentration of excess oxygen in CSZ was found to be proportional to the content of iron oxide within experimental error.The chemical diffusion coefficient was found to be inversely proportional to the relative deviation from stoichiometry,and to incr- ease with increasing Po_2.The results were consistent with a trapping mechanism in which the holes are divided into free and trapped ones.Diffusion coefficient is reduced by the trapping factor.The time constant of equilibration processes with a surrounding atmosphere is increased as the concentration of the trapping centers is increased.The CDZ electrolyte free of Fe_2O_3 gives fast response in EMF. Received:  18 January 1987      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1987/V23/I1/132 1 Smith A W,Meszaros F,Amata C D.J Am Ceram Soc,1966;49:240 2 Hartung R,Moebius H H.Z Phys Chem,1970;243:133 3 Palguev S F,Gilderman V K,Neujmin A D.J Electrochem Soc,1975;122:745 4 Heyne L,Beckmans N M.Proc Br Ceram Soc,1971;19:229 5 Kitazawa K,Coble R L.J Am Ceram Soc,1974;57:360 Barrer R M.Diffusion in and Through Solids,New York:Cambridge Univ.Press,1951 7 Masson C R,Whiteway S G,Collings C A.J Am Ceram Soc 1963;42:745 8 Alcock C B,Chan J C.Can Metall Q,1972;11:559 9 Morin F.Can Metall Q,1975;14:97 10 Wagner C.Z Phys Chem,1933;B21:25 11 Heyne L.In:Geller G.ed.Solid Electrolytes,Berlin:S pringer-Verlay,1977;169-221Q No related articles found! No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed