惰气熔融-红外吸收法测定钽钨合金中氢  

Determination of hydrogen in tantalum-tungsten alloy by inert gas fusion-infrared absorption method

作　　者：王宽 高东旭[1,2] 王芳 石新层 张哲[1,2] 郑伟 WANG Kuan;GAO Dongxu;WANG Fang;SHI Xinceng;ZHANG Zhe;ZHENG Wei(Xi’an Hantang Analysis&Testing Co.,Ltd.,Xi'an 710201,China;Northwest Institute for Non-ferrous Metal Research,Xi'an 710016,China)

机构地区：[1]西安汉唐分析检测有限公司,陕西西安710201 [2]西北有色金属研究院,陕西西安710016

出　　处：《冶金分析》2022年第4期34-37,共4页Metallurgical Analysis

基　　金：陕西省创新能力支撑计划(2021PT-024)。

摘　　要：通过对助熔剂、称样量、分析功率和积分时间的研究,建立了惰气熔融-红外吸收法测定钽钨合金中氢含量的方法。实验结果表明,称取0.15 g钽钨合金样品,放入镍囊,投入脱气后的石墨套坩埚中,设置分析功率为4 000 W,积分时间为60 s,可实现惰气熔融-红外吸收法对钽钨合金中氢含量的测定。方法检出限为0.000 03%,定量限为0.000 1%。将实验方法应用于钽钨合金样品中氢含量的测定,结果的相对标准偏差(RSD,n=11)为16.5%。按照实验方法对另一钽钨合金样品中氢含量进行测定,并加入适量钛标样GBW(E)020187进行加标回收试验,得加标回收率为94%~101%。A method for the determination of hydrogen content in tantalum-tungsten alloy by inert gas fusion-infrared absorption was established.The flux,sample mass,analytical power and integral time were optimized.The experimental results showed that the content of hydrogen in tantalum-tungsten alloy could be determined by inert gas fusion-infrared absorption method under the following conditions:0.15 g of tantalum-tungsten alloy sample was transferred into nickel capsules,and then put into graphite crucible after degassing;the analytical power was controlled at 4 000 W;the integral time was 60 s.The limit of detection and limit of quantification was 0.000 03% and 0.000 1%,respectively.The proposed method was applied for the determination of hydrogen content in tantalum-tungsten alloy sample,and the relative standard deviation(RSD,n=11) of determination results was 16.5%.The content of hydrogen in another tantalum-tungsten alloy sample was determined according to the experimental method.Proper amount of titanium standard sample(GBW(E)020187) was added for the recovery test.The recoveries were between 94% and 101%.

关 键 词：惰气熔融 钽钨合金 氢 红外吸收法 

分 类 号：O659.2[理学—分析化学] TF125.24[理学—化学]