电工用铜中氧含量测定方法的研究
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摘要
在电工用铜的氧含量测定方法中,惰气熔融-红外吸收法是目前普遍采用的测定方法。与传统酸洗法制备的测试样品相比,采用物理法制备的样品,其测定结果的准确性和一致性更好。对于氧含量较低的无氧铜以及高纯铜,测定的不确定度主要来源于标准物质,通过选用低氧含量的标准物质建立校准曲线,可以提高测定的准确性。在测定样品的氧含量前,特别是测定高纯铜样品前,根据所使用的仪器设备确定合适的分析参数,能够降低不确定因素引起的偏差。
Inert gas fusion infrared absorption method is widely used in the determination of oxygen content in copper for electrical purposes. Compared with the traditional picking process,the results of oxygen content of samples that prepared by physical method are accurate and consistent. For oxygen free copper and high pure copper with low oxygen content,the source of uncertainty is mainly derived from standard material. The accuracy of the test can be improved by establishing a calibration curve which is established by using low oxygen standard material. According to the difference of instruments used,appropriate analytical parameters should be determined to reduce the deviations caused by uncertainties,before testing the oxygen content of the sample,especially before the high purity copper sample.
Inert gas fusion infrared absorption method is widely used in the determination of oxygen content in copper for electrical purposes. Compared with the traditional picking process,the results of oxygen content of samples that prepared by physical method are accurate and consistent. For oxygen free copper and high pure copper with low oxygen content,the source of uncertainty is mainly derived from standard material. The accuracy of the test can be improved by establishing a calibration curve which is established by using low oxygen standard material. According to the difference of instruments used,appropriate analytical parameters should be determined to reduce the deviations caused by uncertainties,before testing the oxygen content of the sample,especially before the high purity copper sample.
引文
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[17]钱庆长,史静,王静.高频红外吸收法测定铜中氧的不确定度评定[J].铜业工程,2016(1):96-100.
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[2]周建平,胡毅光,刘卫红,等.浅析氧含量对铜杆电气、机械及加工性能的影响[J].矿冶工程,2010,30(2):99-101.
[3]刘富国,齐增生,冯祥轶.铜杆质量对再拉断线的影响[J].有色金属加工,2010,39(4):10-12.
[4]周建平,胡毅光,刘卫红,等.浅析氧含量对铜杆电气、机械及加工性能的影响[J].矿冶工程,2010,30(2):99-101.
[5] Kato M. The production of ultrahigh-purity copper for advanced application[J]. Journal of the Metals&Materials Society,1995(12):44-46.
[6]禹泽海,孙鹏,汪春平.高纯铜溅射靶材的发展及现状[J].山西冶金,2007(5):16-18.
[7]全国有色金属标准化技术委员会.铜及铜合金化学分析方法第8部分:氧含量的测定:GB/T 5121. 8—2008[S].北京:中国标准出版社,2008.
[8] Ogawara Y,Bruneau A,Kimura T. Determination of ppb-level CO,CO2,CH4,and H2O in high-purity gases using matrix isolation FT-IR with an integrating sphere[J]. Analytical Chemistry,1994,66(23):4354-4358.
[9] Abitan H,Bohr H,Buchhave P. Correction to the Beer-Lambert-Bouguer law for optical absorption[J]. Appl Opt,2008,47(29):5354-5357.
[10]章蓬伟.基于红外吸收原理的甲烷浓度检测的实验研究[D].秦皇岛:燕山大学,2013.
[11]成源棣,王荫淞,钱银娥,等.用质子活化分析法测定铜中微量氧[J].核技术,1978(1):51-55.
[12]王芹,冯景春,冯开.气相色谱法及其应用[J].广东化工,2014,41(12):202.
[13]宋忠训.脉冲色谱法测定无氧铜中微量氧[J].冶金分析,1986(4):58-61.
[14]曹飞飞,周涛,张东翔.惰气熔融-红外吸收法测定高纯铜中痕量氧[J].冶金分析,2015,35(5):32-36.
[15]曹飞飞.高纯铜中痕量元素的分析方法研究[D].北京:北京理工大学,2015.
[16]叶凡,刘跃平,黄晶.两种制样方法对氧含量测试结果的影响[J].电工材料,2006(3):20-22.
[17]钱庆长,史静,王静.高频红外吸收法测定铜中氧的不确定度评定[J].铜业工程,2016(1):96-100.
[18]吴振宁,黄小峰,王学华,等.无氧铜中超低氧的检测:冶金及材料分析测试学术报告会[C]. 2010.
[19] Yoshioka T,Okochi H,Hasegawa R. Determination of ultra low concents of oxygen in high purity iron[J]. Materials Transactions,1993,34(6):504-510.