抄録
The self diffusion coefficients of sodium in sodium germanate melts with two different compositions were measured in the temperature range from 1 000°C to 1200°C by the instantaneous plane source method. Radio active 24No was used as the tracer.
The results are as follows:
for 30mol% Na20-70mol% Ge O2:
D=2.1×10-3exp (-14200±5000/RT)
for 40mol% Na20-60mol% Ge O2:
D=102×10-3exp (-10500±3000)
