在电化学脱氧提纯金属钇的过程中,利用熔融的CaCl2使其副产品CaO的活度降低,脱去的氧以CO或CO2气体的形式从石墨阳极放出,只要电解条件合适,可使脱氧极限无限降低,同时金属钙是由CaCl2电解所得,较Ca-CaCl2熔盐脱氧提纯金属钇的方法,它降低了由于金属Ca的不纯而引入的杂质污染.对于形状规则的金属钇脱氧时间为t=(d2/π2D)ln[(4co/πc)sinπx/d].脱氧后的产品有少量的碳污染,但对实验进行一定的改进后,也可得到氧含量和碳含量都低于100μg/g的金属钇.
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