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《化学分析计量》 2021年第06期
DOI:10.3969/j.issn.1008-6145.2021.06.009
高频燃烧-红外吸收法测定高纯净度GH4169高温合金中碳
汪磊,韦建环,蒙益林,高帅,李燕昌,颜京
中国航发北京航空材料研究院,航空材料检测与评价北京市重点实验室,中国航空发动机集团材料检测与评价重点实验室,材料检测与评价航空科技重点实验室,北京 100095 
Determination of carbon in high purity GH4169 superalloy by high frequency combustion infrared absorption method
Wang Lei, Wei Jianhuan, Meng Yilin, Gao Shuai, Li Yanchang, Yan Jing
AECC Beijing Institute of Aeronautical Materials; Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation; Key Laboratory of Science and Technology on Aeronautical Materials Testing and Evaluation, Aeroengine corporation of China; Aviation Key Laboratory of Science and Technology on Materials Testing and Evaluation, Beijing 100095, China 
摘要:建立高频燃烧-红外吸收法测定高纯净度GH4169高温合金中碳元素的分析方法。对称样质量、设备功率、助溶剂配比、空白等方面进行了讨论,确定了最佳分析条件:称取样品质量为0.5 g;设备功率为2.0 kW;加入1.5 g新型复合助溶剂;采用碳钢38号标准物质单点校正碳工作曲线。用该方法测定高纯净度GH4169高温合金中的碳,测定结果的相对标准偏差为2.04%~2.30% (n=8)。用该方法测定IARM 56G标准物质,测定值与标准值一致。方法检出限为0.0003%,定量限为0.0010%。该方法快速、简便,准确度高,稳定性好,可用于高纯净度GH4169高温合金中碳元素含量的测定。  
Abstract:A high frequency combustion infrared absorption method was established for the determination of carbon elements in high-purity GH4169 superalloy. Sample weight, equipment power, co-solvent ratio, blank, the optimal analysis conditions were discussed and determined as followed: the sample weight was 0.5 g; equipment power was 2.0 kW; 1.5 g of new composite cosolvent was added; carbon steel No. 38 reference material was used for single point calibration of carbon working curve. By using this method to determine the high purity GH4169 superalloy, the relative standard deviation of the measurement results was 2.04%-2.30%(n=8). The carbon in IARM 56G reference substance was determined by this method, the determined value of carbon was consistent with the standard value. The detection limit was 0.0003% and the quantification limit was 0.0010%. The method is fast, simple, accurate, and stable, and it can be used for the determination of carbon element content in high-purity GH4169 superalloy. 
关键词:碳;高纯净度GH4169高温合金;高频燃烧-红外吸收法 
Keywords:carbon; high purity GH4169; high frequency combustion infrared absorption method 
本文引用格式:
汪磊,韦建环,蒙益林,等.高频燃烧-红外吸收法测定高纯净度GH4169高温合金中碳[J].化学分析计量,2021,30(6):39.
Wang Lei,Wei Jianhuan,Meng Yilin,et al. Determination of carbon content in high purity GH4169 superalloy by high frequency combustion infrared absorption method[J]. Chemical Analysis and Meterage,2021,30(6):39. 

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