GB/T 29916-2013 English PDF

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GB/T 29916-2013: Chemical analysis methods for lanthanum magnesium alloy
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 29916-2013	629	Add to Cart	5 days	Chemical analysis methods for lanthanum magnesium alloy	Valid

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Basic data

Standard ID: GB/T 29916-2013 (GB/T29916-2013)
Description (Translated English): Chemical analysis methods for lanthanum magnesium alloy
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H14
Classification of International Standard: 77.120.99
Word Count Estimation: 27,287
Regulation (derived from): National Standards Bulletin 2013 No. 23
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 method for the determination of 23 lanthanum magnesium alloy component content. This standard applies to the total rare earth lanthanum magnesium alloys, magnesium, carbon, yttrium, cerium, praseodymium, neodymium, samarium, eu

GB/T 29916-2013: Chemical analysis methods for lanthanum magnesium alloy

---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.
Chemical analysis methods for lanthanum magnesium alloy ICS 77.120.99 H14 National Standards of People's Republic of China La magnesium alloys - Issued on. 2013-11-27 2014-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 1 2 General Determination of the total weight of the RE Act 3 1 4 Determination of magnesium content - EDTA volumetric method 4 5 carbon content was measured high frequency - infrared absorption method 6 6 rare earth impurities by inductively coupled plasma atomic emission spectrometry (method 1) and inductively coupled plasma mass spectrometry (square Method 2) 8 7 non-rare earth impurities by inductively coupled plasma atomic emission spectrometry 17

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard by the National Standardization Technical Committee of rare earth (SAC/TC229) centralized. This standard is drafted by. Baotou Rare Earth Research Institute, the National Quality Supervision and Inspection Center of rare earth products. Participated in the drafting of this standard. Beijing Nonferrous Metal Research Institute, Ganzhou Nonferrous Metallurgy Research Institute, Hunan Institute of rare earth materials, Baotou CIQ. The main drafters of this standard. Zhou Kai Red Dragon Xudong, Qian Hao, high Lizhen, gold Siqin at Ya-Hui, Cui love end, Liu Rongli, Cui Yixin, Jiang Tianyi, Zhao Changyu, Yuanli Bing, Liu Hong, Li Ying, Zhongdao Guo, Zhang Lifeng, Zhang Xiuyan, Zhang Yiming, Liu Pengyu, Shao Rongzhen, Bing. La magnesium alloys - Warning --- personnel should use this standard regular laboratory work experience. This standard does not point out all possible security asked question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This standard specifies the method for determination of lanthanum magnesium alloy component content of 23. This standard applies to the total amount of rare earth lanthanum magnesium alloys, magnesium, carbon, yttrium, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, aluminum, Calcium, copper, iron, nickel, silicon contents.

2 General

2.1 When a determination of two or more ingredients, the part of the two methods to analyze the range of 2 to overlap arbitration analysis. 2.2 Unless otherwise stated, the use of recognized analytical reagent only in the analysis; the water is distilled or deionized water or equivalent purity. 2.3 instruments shall be within the test period, its performance should meet the technical requirements of the test parameters indicators; common laboratory instruments, including titration Tubes, single marking flask, single marking pipette.

3 Determination of total rare earth gravimetric method

3.1 Determination of Range Determination of total rare earth range 15.00% 30.00%. 3.2 Principle of the method The sample is dissolved in hydrochloric acid, ammonia precipitation of rare earth separating calcium and magnesium. After the precipitate was dissolved smoke desilication, with oxalic acid precipitation separation of rare earth iron will Precipitation at 950 ℃ burning into oxides, constant weight, weighing determination of rare earth after cooling. 3.3 Reagents and materials 3.3.1 ammonium chloride. 3.3.2 hydrochloric acid (ρ = 1.19g/mL). 3.3.3 hydrochloric acid (11). 3.3.4 Hydrogen peroxide (30%). 3.3.5 Ammonia (11). 3.3.6 ammonium chloride solution. 2g ammonium chloride (3.3.1) dissolved in 100mL of water, ammonia (3.3.5) is adjusted to pH value of 9 to 10. 3.3.7 nitric acid (ρ = 1.42g/mL). 3.3.8 perchloric acid (ρ = 1.67g/mL). 3.3.9 hydrochloric acid (298). 3.3.10 oxalic acid solution (100g/L). 3.3.11 oxalic acid solution (20g/L). ......

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