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Electrical conductivity of zirconia stabilized with scandia and yttria

Journal Article · · Journal of the American Ceramic Society; (United States)
; ;  [1];  [2]
  1. Akita Univ., Akita (Japan). Dept. of Materials Engineering and Applied Chemistry
  2. Tosoh Co., Tsukuba (Japan). Tsukuba Research Lab.

Electrical conductivity of zirconia stabilized with scandia and yttria (Sc[sub 2]O[sub 3] + Y[sub 2]O[sub 3] = 8 mol%) has been measured by the complex impedance method in the temperature range 573 to 1,173 K. With increasing Sc[sub 2]O[sub 3] concentration, electrical conductivity increases at temperatures above 640K, but it decreases below this temperature. Electrical conductivity in the electrolytes examined is a result of two processes: an activation energy of 59 to 79 kJ/mol predominant at high temperatures and an activation energy of 109 to 125 kJ/mol predominant at low temperatures.

OSTI ID:
6050179
Journal Information:
Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 76:3; ISSN 0002-7820; ISSN JACTAW
Country of Publication:
United States
Language:
English