The diffusivities of O in liquid Sn at temperatures of between 800 and 900C were measured by using a modified coulometric titration method and a galvanic cell of the form:

O in liquid sample || yttria-stabilized zirconia || air, Pt

It was found that the diffusion coefficient of O in liquid Sn was independent of the O concentration (table 227), and could be described by:

D (cm2/s) = 0.003421 exp[-33.954(kJ/g-atom)/RT]

H.Chou, T.C.Chow, S.F.Tsay, H.S.Chen: Journal of the Electrochemical Society, 1995, 142[6], 1814-9

 

Table 227

Diffusivity of O in Liquid Sn

 

Temperature (C)

O (at%)

D (cm2/s)

800

0.011568

7.47 x 10-5

800

0.006073

7.37 x 10-5

800

0.002074

7.59 x 10-5

800

0.000709

7.58 x 10-5

800

0.000242

7.42 x 10-5

850

0.012049

8.76 x 10-5

850

0.006471

9.56 x 10-5

850

0.002296

9.22 x 10-5

850

0.000815

9.41 x 10-5

900

0.012688

1.04 x 10-4

900

0.007118

1.03 x 10-4

900

0.002717

1.03 x 10-4

900

0.001036

1.07 x 10-4

900

0.000395

1.05 x 10-4