Single grains which contained between 2.8 and 1mol%Y2O3 were prepared by using the

skull melting technique, and the direct-current resistivity was determined at 400 to 1000C (table 219).

S.P.S.Badwal, M.V.Swain: Journal of Materials Science Letters, 1985, 4[4], 487-9

Table 218

Ionic Conduction Parameters for ZrO2-10mol%Y2O3

 

Temperature (K)

ln[o (SK/cm)]

E (kJ/mol)

1770-1520

5.21

70

1520-1200

5.49

78

1200-1010

5.88

87

1010-750

6.55

99

< 750

7.07

107

Y: ionic radius = 0.0900, polarizability = 0.0015

Table 219

Ionic Conduction Parameters for ZrO2-Y2O3 Mixtures

 

Y2O3 (mol%)

400C (S/cm)

Temperature (C)

E (eV)

12

2.58 x 10-5

400-500

1.19

12

2.58 x 10-5

850-1000

1.04

6.9

8.47 x 10-5

400-500

0.98

6.9

8.47 x 10-5

850-1000

0.88

2.8

1.05 x 10-4

400-500

0.91

2.8

1.05 x 10-4

850-1000

0.79

Table 220

Ionic Conduction Parameters for ZrO2-10mol%Yb2O3

 

Temperature (K)

ln[o (SK/cm)]

E (kJ/mol)

1770-1500

5.08

67

1500-1210

5.29

72

1210-1010

5.65

81

1010-840

6.29

93

< 840

7.34

110

Yb: ionic radius = 0.0868, polarizability = 0.0014