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共沉淀法制备Sm2Fe17合金前驱体的热力学分析
Thermodynamic Analysis on Preparing Precursor of Sm2Fe17 Alloy by Chemical Co-precipitation
【摘要】 对制备钐铁合金前驱体的Sm(Ⅲ)-Fe(Ⅱ)-NH3.H2O-NH4HCO3-H2O体系进行了热力学分析,给出了溶液中Sm(Ⅲ)、Fe(Ⅱ)浓度与pH值的关系,确定了两种金属离子完全共沉淀的最佳pH为7.0。
【Abstract】 Thermodynamic analysis on the system of Sm(Ⅲ)-Fe(Ⅱ)NH3·H2O-NH4HCO3-H2O to prepare Sm-Fe alloy precursor was carried out.The relations between the system pH value and total concentration of Sm(Ⅲ) and Fe(Ⅱ) were determined.Suitable pH value of co-precipitation was 7.0.
【关键词】 Sm2Fe17合金前驱体;
共沉淀;
热力学分析;
【Key words】 Sm2Fe17 alloy precursor; co-precipitation; thermodynamic analysis;
【Key words】 Sm2Fe17 alloy precursor; co-precipitation; thermodynamic analysis;
- 【文献出处】 湿法冶金 ,Hydrometallurgy of China , 编辑部邮箱 ,2007年03期
- 【分类号】TG132.27
- 【被引频次】3
- 【下载频次】105