铝合金化学成分标准物质的研制
赵辉,黄辉,李本涛,赵华,李颖,巩琛
中国兵器工业集团第五三研究所
Preparation of certified reference materials of aluminum alloy chemical composition
赵辉,黄辉,李本涛,赵华,李颖,巩琛
(CNGC Institute 53, Jinan 250031, China)
摘要:介绍铝合金化学成分标准物质的研制过程。采用中频感应电炉熔炼法制备了铝合金化学成分标准物质 候选物,并对标准物质候选物的均匀性和稳定性进行了考察。选择 6 家具有资质的实验室对研制的标准物质中各 化学成分进行协作定值,并对各元素定值的不确定度进行评定。结果表明,在 95% 的置信区间内标准物质均匀性良 好,经过 13 个月稳定性考察试验,标准物质稳定性良好。Si,Fe,Cu,Mn,Mg,Ti,Cd,V,Zr,B,Sn,Zn 的定值结果 分 别 为 0.013 8%,0.012 5%,2.868%,0.185%,0.014 0%,0.082 8%,0.041 7%,0.032 9%,0.031 4%,0.003 8%,0.003 4%, 0.025 6%,定值结果的相对扩展不确定度为 1.4%~9.0%(k=2)。研制的标准物质达到相关技术要求,可用于该类铝合 金材料的质量控制。
Abstract:The preparation of certified reference materials of aluminum alloy chemical composition was introuduced. The intermediate frequency induction furnace smelting method
was used to prepare the certified reference material candidate for aluminum alloy chemical composition, and the uniformity test and stability test were analyzed. The values of
reference materials were determined by six qualified laboratories, and the uncertainty of determination results was evaluated. The results showed that the uniformity was good
at the confidence level of 95% and the stability was good in 13 months of long term stability test. The values of Si, Fe, Cu, Mn, Mg, Ti, Cd, V, Zr, B, Sn, Zn in reference
materials were 0.0138%, 0.0125%, 2.868%, 0.185%, 0.0140%, 0.0828%, 0.0417%, 0.0329%, 0.0314%, 0.0038%, 0.0034%,0.0256%, respectively, and the expanded uncertainty was
1.4%-9.0%(k=2). The certified reference materials can meet the requirements of the relevant technology and can be used for the quality control of aluminum alloy materials.
关键词:铝合金;化学成分;标准物质
Keywords:aluminum alloy; chemical composition; certified reference material
本文引用格式:
赵辉,黄辉,李本涛,等.铝合金化学成分标准物质的研制[J].化学分析计量,2016,25(4):8-10.
ZHAO H,HUANG H,LI B T,et al.Preparation of certified reference materials of aluminum alloy chemical composition[J]. Chemical analysis and meterage,2016,25(4):8-10.
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