GB/T 5121.29-2015 English PDF

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GB/T 5121.29-2015: Methods for chemical analysis of copper and copper alloys -- Part 29: Determination of aluminium oxide content
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GB/T 5121.29-2015	239	Add to Cart	3 days	Methods for chemical analysis of copper and copper alloys -- Part 29: Determination of aluminium oxide content	Valid

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Basic data

Standard ID: GB/T 5121.29-2015 (GB/T5121.29-2015)
Description (Translated English): Methods for chemical analysis of copper and copper alloys -- Part 29: Determination of aluminium oxide content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.30
Word Count Estimation: 11,136
Date of Issue: 2015-09-11
Date of Implementation: 2016-04-01
Regulation (derived from): National Standard Announcement 2015 No.25
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the copper and copper alloy in the dispersion-enhanced copper in the determination of aluminum oxide content method. This standard applies to copper and copper alloy dispersion-enhanced copper in the determination of aluminum oxide. The measurement range of method 1 is 0.030% ~ 1.10%, and that of method 2 is 0.030% ~ 1.10%. Method 1 is the arbitration method.

GB/T 5121.29-2015: Methods for chemical analysis of copper and copper alloys -- Part 29: Determination of aluminium oxide content

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for chemical analysis of copper and copper alloys. Part 29. Determination of aluminium oxide content ICS 77.120.30 H13 National Standards of People's Republic of China Methods for chemical analysis of copper and copper alloys Part 29. determination of aluminum oxide content Part 29. Determination ofaluminiumoxidecontent 2015-09-11 release 2016-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released

Foreword

GB/T 5121 "Copper and copper alloy chemical analysis method" a total of 29 parts. Part 1 Determination of copper content; - Determination of phosphorus content in Part 2; - Determination of lead content in Part 3; - Part 4 Determination of carbon and sulfur content; - Part 5 Determination of nickel content; Part 6 Determination of bismuth content; - Part 7 Determination of arsenic content; - Determination of oxygen content in Part 8; - Determination of iron content in Part 9; - Part 10 Determination of tin content; - Determination of zinc content in Section 11; - Determination of antimony content in Section 12; - Part 13 Determination of aluminum content; - Part 14 Determination of manganese content; - Determination of cobalt content in Part 15; - Determination of chromium content in Section 16; - Part 17 Determination of beryllium content; - Part 18 Determination of magnesium content; - Part 19 Determination of silver content; Part 20 Determination of Zirconium Content; - Part 21 Determination of titanium content; - Part 22 Determination of cadmium content; - Part 23. Determination of silicon content; - Part 24. Determination of selenium and tellurium content; - Part 25 Determination of boron content; - Part 26 Determination of mercury content; Part 27. Inductively Coupled Plasma Atomic Emission Spectrometry; Part 28 Inductively Coupled Plasma Atomic Emission Mass Spectrometry; Determination of aluminum oxide content in Part 29.. This part is part 29 of GB/T 5121. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part is made by China Nonferrous Metals Industry Association. This part is the national nonferrous Metals Standardization Technical Committee (SAC/TC243). This part is responsible for the drafting of the unit. Aluminum Luoyang Copper Co., Ltd., Nonferrous Metals Technology and Economic Research Institute. This part participates in the drafting unit. Central South University, China Shipbuilding Industry Corporation, the 725th Research Institute, Beijing Nonferrous Metals Research Institute, Suzhou Nonferrous Metals Research Institute Co., Ltd., Guangzhou Nonferrous Metals Research Institute, National Copper and Aluminum Smelting and Processing Product Quality Supervision and Inspection Center, Zhejiang Jiangxi Province Metallurgical Products Quality Inspection Station Co., Ltd., Shaoxing City Quality and Technical Supervision and Inspection Institute. The main drafters of this part. Wang Qingyan, Qin Shuping, Deng Feiyue, Wang Shidong, Yue Weifeng, former Huai Bao, Nie Fuqiang, Jia Zhijun, Zhang Diankai, Zhang Huilin, Zhang Yongjin, Yu Genghua, Du Meifang, Chen Jidong, Li Yuehong, Tong Ling, Han Yi, Qian Xiaodong, Li Ti, Li Jingbin, Wang Li, Yao Qiaoping, Li Wei, Meng Shixian, Wang Jin, Zhang Yan. Methods for chemical analysis of copper and copper alloys Part 29. determination of aluminum oxide content

1 Scope

This part of GB/T 5121 specifies the determination of aluminum oxide content in dispersion-strengthened copper of copper and copper alloys. This part applies to copper and copper alloy dispersion of copper in the determination of the content of aluminum oxide. The measurement range of Method 1 is 0.030% ~ 1.10%; Method 2 has a measurement range of 0.030% to 1.10%. Method 1 is the arbitration method. 2 method 1 ethylenediamine tetraacetic acid disodium complex - zinc acetate titration method 2.1 Method Summary The base copper and other metals in the sample were selectively dissolved in a water bath of less than 25 ° C with dilute nitric acid and filtered. Quantitative separation of trioxidation Aluminum is melted and leached with potassium pyrosulfate. Determination of aluminum oxide content by disodium EDTA - zinc acetate titration with ethylenediamine tetraacetic acid. 2.2 Reagents and Materials Unless otherwise stated, only the reagents identified as analytical reagents and distilled or deionized water or comparable purity were used in the analysis. 2.2.1 potassium pyrophosphate. 2.2.2 glacial acetic acid (ρ1.05g/mL). 2.2.3 ammonia (ρ0.90g/mL). 2.2.4 hydrochloric acid (1 1). 2.2.5 nitric acid (1 1). 2.2.6 nitric acid (1 10). 2.2.7 nitric acid (1 49). 2.2.8 Sodium hydroxide solution (300 g/L). 2.2.9 Potassium fluoride solution (150 g/L). 2.2.10 copper solution (1.0g/L). Weigh 0.100g pure copper (aluminum mass fraction < 0.0005%), add 5mL nitric acid (2.2.5) heating Dissolve it, boil to remove nitrogen oxides, and cool it. Into the 100mL volumetric flask, diluted with water to the mark, mix. 2.2.11 ethylenediamine tetraacetic acid disodium (C10H14N2O8Na2 · 2H2O) solution (0.1mol/L). Weigh 37.2g disodium ethylenediaminetetraacetate (C10H14N2O8Na2.2H2O) was dissolved in about 400 mL of hot water, cooled, transferred into a 1000 mL volumetric flask, diluted to a scale with water, Mix well. 2.2.12 hexamethylenetetramine solution (300 g/L). 2.2.13 1- (2-Pyridylazo) -2-naphthol (PAN) ethanol solution (2 g/L). 2.2.14 aluminum standard solution. Weigh 1.0000g pure aluminum (aluminum mass fraction ≥ 99.95%) placed in 150mL polytetrafluoroethylene beaker, add Into 20mL sodium hydroxide solution (2.2.8), slow heating dissolved completely, cooling. With hydrochloric acid (2.2.4) transferred to the precipitation disappeared, the solution clear, this When the solution is acidic, cooling, into the 1000mL volumetric flask, diluted with water to the mark, mix. 1 mL of this solution contains 1 mg of aluminum. 2.2.15 zinc acetate standard titration solution c [Zn (CH3COO) 2 · 2H2O] ≈ 0.0093mol/L. 2.2.15.1 Preparation. Weigh 2.050 g of zinc acetate [Zn (CH3COO) 2 · 2H2O] in a 250 mL beaker, add 1.0 mL of ice Acid (2.2.2), 100 mL of water, and stirred to dissolve it. Into the 1000mL volumetric flask, diluted with water to the mark, mix. ......

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