摘要
本文通过电化学和物理检测方法,研究了从氯化物溶液中提炼镍时,铁、钴、铅等杂质对镍电积过程的影响。通过测试不同杂质,不同浓度和不同温度下的极化曲线,求出氯化镍溶液中不同条件下允许的杂质含量。对电积镍的 X 射线衍射分析及扫描电镜下的形貌观察发现,从氯化物溶液中电积镍时,少量铁、钴的存在对电流效率和能耗影响不大。但溶液申铅超过一定量时,不但增加电积镍的能耗,还影响电镍质量。这些杂质对镍沉积物的形貌和结晶取向均有影响。
Studies have been made on the effect of Fe、Co、Pb in all chloride ele- ctrolytes on nickel electrodeposits by using electrochemical measurements and physical examination.Allowable content of Fe、Co、Pb in nickcl chloride electrotyte under diffrent conditions has been acquired from cathodic pola- rization curves of Fe、Co、Pb at different concentrations and different temperatures. The results of X-ray diffraction analysis and the observation of scanning electron microscope have shown that a small amount of Fe、Co in electrolyte do not affect the current efficiency and electric energy consumption when nickel is electrodeposited from all chloride electrolytes.The Pb concentra- tion larger than a definite amount in electrolyte will not only increase elec- tric energy consumption but also affect the quality of cathodic nickel.The morphology and prefered orientation of cathodic nickel are also affected by these impurities in electrolyte.
出处
《化工冶金》
CSCD
北大核心
1990年第1期40-46,共7页
关键词
氯化物
铁
钴
铅
电化学
镍
Iron
Cobalt
Lead
Nickel
Electrodeposition
