高镍合金中镍含量方法研发  

Research and Development of Nickel Content Methods in High Nickel Alloys

作　　者：赖雪芳 Lai Xuefang(Guangdong High end Stainless Steel Research Institute Co.,Ltd.,Yangjiang 529500;Guangdong Guangqing Metal Technology Co.,Ltd.,Yangjiang 529500;Key Laboratory of High Quality Stainless Steel Technology R&D Enterprises in Guangdong Province,Yangjiang 529500;New R&D Institutions in Guangdong Province,Yangjiang 529500,China)

机构地区：[1]广东省高端不锈钢研究院有限公司,广东阳江529500 [2]广东广青金属科技有限公司,广东阳江529500 [3]广东省高品质不锈钢技术研发企业重点实验室,广东阳江529500 [4]广东省新型研发机构,广东阳江529500

出　　处：《广东化工》2023年第20期15-18,共4页Guangdong Chemical Industry

基　　金：阳江市“揭榜挂帅”项目(SDZX2022001);阳江市合金材料与五金刀剪重点产业人才振兴计划项目(RCZX2023011);省科技专项资金核心技术攻关项目(SDZX2023003)。

摘　　要：本文主要通过对国标GB/T 223.23-200丁二酮肟分光光度法[1-2]的改进,使其能够测量镍含量较高的样品(2.00%~100.00%),并与丁二酮肟重量法[3-4]和EDTA滴定法[5-7]进行比较,新方法针对不锈钢、镍铁等不同镍含量,全都使用新研发的丁二酮肟分光光度检测方法,检测时长约3小时。该方法的测定时间短,便捷,测量结果准确可靠,满足企业内部日常分析要求。This article mainly improves the dimethylglyoxime spectrophotometric method to measure samples with high nickel content(2.00%~100.00%),and compares it with the dimethylglyoxime gravimetric method and EDTA titration method.The new method targets different nickel contents such as stainless steel and nickel iron,and all use the newly developed dimethylglyoxime spectrophotometric detection method.The detection time of this method is about 2.5 hours.The relative standard deviation of the measurement results of this method is less than 0.45%,and the measurement results are accurate and reliable,meeting the daily analysis requirements of the enterprise.

关 键 词：镍 丁二酮肟分光光光度法 EDTA容量法 丁二酮肟重量法 重复性 

分 类 号：TQ138.1[化学工程—无机化工]