| 过硫酸铵氧化-亚铁容量法测定高温合金及钢铁中高铬含量 |
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| 引用本文： | 刘众宣,赵岩松. 过硫酸铵氧化-亚铁容量法测定高温合金及钢铁中高铬含量[J]. 化学分析计量, 2010, 19(4): 44-47 |
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| 作者姓名： | 刘众宣 赵岩松 |
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| 作者单位： | 1. 哈尔滨东安发动机(集团)有限公司,哈尔滨,150066
2. 神华神东电力有限责任公司,榆林,719315 |
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| 摘 要： | 在航空行业标准HB 5220.15-1995的基础上,采用过硫酸铵氧化-亚铁容量法测定高温合金及钢铁中高铬含量的试验方法,通过试验确定了试样量、硫酸和磷酸等试剂用量。该方法对高温合金样品中铬含量测定结果的相对标准偏差不大于0.13%(n=8),回收率为100.04%~100.49%。方法稳定性和重复性好,适用于铬含量为30.00%~50.00%的高温合金及钢铁样品。
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| 关 键 词： | 容量法 高温合金 钢铁 高铬 |
MEASUREMENTOFHIGHCHROMIUMCONTENTINSUPERALLOYANDSTEELSBYAMMONIUM PERSULFATE OXIDATION-AMMONIUM FERROUS SULFATE TITRATION METHOD |
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| Liu Zhongxuan,Zhao Yansong. MEASUREMENTOFHIGHCHROMIUMCONTENTINSUPERALLOYANDSTEELSBYAMMONIUM PERSULFATE OXIDATION-AMMONIUM FERROUS SULFATE TITRATION METHOD[J]. Chemical Analysis And Meterage, 2010, 19(4): 44-47 |
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| Authors: | Liu Zhongxuan Zhao Yansong |
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| Affiliation: | 1. Harbin Dongan Engine(Group) Co. Ltd., Harbin 150066, China;2.Shenhua Shendong Power Company Ltd, Yulin 719315, China) |
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| Abstract: | Based on HB 5220. 15 - 1995, ammonium persulfate oxidation - ammonium ferrous sulfate titration method was used to measure high chromium content in superalloy and steels. Through a lot of tests, the mass of the specimen, sulfuric acid, phosphoric acidand all sorts of reagent were certified. The relative standard deviation was not more than 1.3% （n = 8 ）. The sample recovey was 100.04% - 100.49%. The stability and the repeatability of the method was fine. The method is suitable for detecting chromium in superalloy and steels which chromium content in the range 30.00% to 50.00%. |
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| Keywords: | titration method superalloy steel high chromium |
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