Although the back EMF increases gradually with prolonging the electrolysis process, it decreases signifcantly with the addition of SrCO_3. Therefore, it is sure that SrCO_3 is decomposed in the electrolysis.

• 在电解过程中； 反电动势逐渐增加； 但向熔体中加入 SrCO_3后； 反电动势明显降低.