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前言近几年来,关于稀土镁中间合金化学分析的资料报导较多,我们对其分析方法也曾做过一些试验,由于攀枝花地区钒钛稀土球墨铸铁的日益推广,稀土镁中间合金的应用逐渐增多,为了满足生产上的需要,我们试验了一个系统的快速分析方法。稀土镁中问合金的溶样,一般是采用硝酸加氢氟酸加硫酸在铂皿中溶解,发现有些试样溶解往往不完全,有少量试样不溶,影响结果,当采用过氧化钠于镍坩埚中熔融,也要较长的熔融时间,坩埚浸蚀最重,而且易产生起火,喷溅。
Preface In recent years, many reports on the chemical analysis of rare earth magnesium master alloy, we have done some tests on its analytical methods, due to the increasing promotion of vanadium-titanium rare earth ductile iron in Panzhihua, the application of rare earth magnesium master alloy gradually increased , In order to meet the production needs, we tested a system of rapid analysis. Rare earth magnesium in the alloy dissolution of the sample is generally used nitric acid hydrofluoric acid plus sulfuric acid in the platinum dish dissolved and found that some samples are often incompletely dissolved, a small amount of sample insoluble, affecting the results, when using sodium peroxide in nickel Crucible melting, but also a longer melting time, the crucible erosion of the most heavy, and prone to fire, splashing.