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| Determination of Cr, Mn and Mo in Alloy Tool Steels by Direct-Read Atomic Emission Spectrometry |
| Received:October 20, 2015 Revised:December 08, 2015 |
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| DOI：doi:10.3969/j.issn.2095-1035.2016.01.013 |
| KeyWord:alloy tool steels; direct reading atomic emission spectrometery; internal standard method; Cr; Mn; Mo |
| Author | Institution |
| LI Ying |
江阴市产品质量监督检验所，江苏 江阴 |
| FENG Xiumei |
江阴市产品质量监督检验所，江苏 江阴 |
| LU Wei |
江阴市产品质量监督检验所，江苏 江阴 |
| CHEN Jun |
江阴市产品质量监督检验所，江苏 江阴 |
| CHEN Lianfang |
江阴市产品质量监督检验所，江苏 江阴 |
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| Abstract: |
| A rapid method for the determination of chromium, manganese and molybdenum in alloy tool steels (Cr12, Cr12MoV) by a direct reading atomic emission spectrometer (model ARL-4460) was established. In order to reduce the effect of the external voltage instability on the stability of absolute strength, the relative strength of chromium, manganese and molybdenum in standard samples was determined using matrix iron as internal standard element. It is well known that different standard samples have different iron content. Therefore in order to reduce the influence of the content change of internal standard element on the correlation coefficient and the standard deviation of the working curve, the relative content was used to correct the working curve., Under the optimum conditions, the relative standard deviations (n=11) of chromium, manganese and molybdenum were 0.68%, 0.79% and 1.7%, respectively. The analytical results obtained by this method were consistent with those obtained by traditional chemical analytical methods. This method can be suit for rapid detection of chrome, manganese and molybdenum in alloy tool steel samples. |
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