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镍基合金中元素分析方法研究进展邵晓东1,刘养勤1,李瑛2,李发根1(1.陕西省西安市石油天然气集团公司管材研究所2.西安热工研究院有限公司,陕西西安 710032)摘 要:综述了近年来国内外测定镍基合金中化学元素分析方法的研究进展.从原子发射光谱法,原子吸收光谱法,分光光度法,原子荧光光谱法,X-射线荧光光谱法,红外吸收光谱法,质谱法,电分析化学法和化学分析法等9个方面介绍了目前有关镍基合金材料中化学元素分析方法的基本特点和应用实例,比较了各种方法的优缺点和适用范围.提出了镍基合金中化学元素分析方法的发展方向:......
. The chemical composition, microstructure and micro-hardness of the as-deposited GSM were investigated. The results show that the TA2 part of exhibiting near-equiaxed grains was α-laths microstructure.../ TA15; graded structural material; microstructure; chemical composition 1 Introduction Functionally graded materials (FGMs) have been continuously developed since 1984 to exploit novel heat-resistant......
Chemical kinetic studies on interfacial reaction in SCS-6 SiC/Ti matrix composites ZHU Yan(朱 艳)1, 2, 3, YANG Yan-qing(杨延清)2, WANG Yao-yu(王尧宇)3 1. College of Environment and Chemical Engineering...; Abstract: Interfacial reaction and its mechanism of SiC/Ti composite were revealed by chemical kinetic studies......
Preparation and mechanism of calcium phosphate coatings on chemical modified carbon fibers by biomineralization HUANG Su-ping(黄苏萍), ZHOU Ke-chao(周科朝), LI Zhi-you(李志友) State Key Laboratory...; Abstract: In order to prepare HA coatings on the carbon fibers, chemical modification......
elements in bauxite residue, with an order of Ca>Na>Al>Fe>Mg~K. The content of minor metals in bauxite residue is relatively low, such chemical composition different from previously... residue with a strong ability to prevent pH from change. 3.2 Bauxite residue alkalinity and associated chemical properties 3.2.1 Mineral composition The ANC was used to assess the quantity of acid......
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, the temperature of the phosphating electrolyte was kept at 80 ℃. The composition of the bath contains no chromate, it is an environmentally protective chemical conversion bath. After the chemical conversion process, the conversion layers were examined by electrochemical methods. The samples for the anodizing process were cut from a rolled AZ31 magnesium alloy plate, whose chemical composition was the same......
spectroscopy (EDS) and X-ray fluorescence (XRF) were used to identify the changes in the chemical composition of coatings. XRF was also used to measure the thickness of coatings. X-ray diffraction (XRD... of coatings in NaCl solution. X-ray photoelectron spectroscopy (XPS) and XRD were used to determine the chemical composition of the corrosion products formed on the surface of Zn-Ni and Zn-Ni-Mn......
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J. Cent. South Univ. (2018) 25: 1274-1284 DOI: https://doi.org/10.1007/s11771-018-3824-6 Extraction of copper and zinc from naturally contaminated copper mine soils: Chemical fractionation analysis...) and nitrilotriacetic acid (NTA). Six soil samples were characterized for the distribution of four chemical fractions of Cu or Zn (acid-soluble, reducible, oxidizable and residual). For the extraction......