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YS/T 574.8-2009: Methods for chemical analysis of zirconium powder for electro-vacuum uses. Determination of hydrogen content-inert gas impulse fusion heat conductivity method
Status: Valid YS/T 574.8: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 574.8-2009 | English | 149 |
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Methods for chemical analysis of zirconium powder for electro-vacuum uses. Determination of hydrogen content-inert gas impulse fusion heat conductivity method
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YS/T 574.8-2009
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| YS/T 574.8-2006 | English | 199 |
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Chemical analysis of zirconium powder for electro-vacuum uses The combustion-gravimetric method for the determination of hydrogen content
| Obsolete |
YS/T 574.8-2006
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PDF similar to YS/T 574.8-2009
Basic data | Standard ID | YS/T 574.8-2009 (YS/T574.8-2009) | | Description (Translated English) | Methods for chemical analysis of zirconium powder for electro-vacuum uses. Determination of hydrogen content-inert gas impulse fusion heat conductivity method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H71 | | Classification of International Standard | 77.120 | | Word Count Estimation | 5,519 | | Date of Issue | 2009-12-04 | | Date of Implementation | 2010-06-01 | | Older Standard (superseded by this standard) | YS/T 574.8-2006 | | Regulation (derived from) | MIIT [2009] No. 66 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the power vacuum with zirconium powder Method for determination of hydrogen content. This standard applies to electric vacuum zirconium powder with hydrogen content. Measuring range (mass fraction): 0. 005% ~ 3. 00%. | YS/T 574.8-2009: Methods for chemical analysis of zirconium powder for electro-vacuum uses. Determination of hydrogen content-inert gas impulse fusion heat conductivity method
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Methods for chemical analysis of zirconium powder for electro-vacuum uses.Determination of hydrogen content-inert gas impulse fusion heat conductivity method
ICS 77.120
H71
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 574.8-2006
Electric vacuum Chemical analysis of zirconium powder
Determination of the amount of hydrogen an inert atmosphere heating thermal conductivity method
Posted 2009-12-04
2010-06-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 574 "Methods for chemical analysis of zirconium powder for electro - vacuum" is divided into eight sections.
--- Determination of the total amount of zirconium and zirconium active YS/T 574.1 electric vacuum zirconium powder - Gravimetric method;
--- YS/T 574.2 electric vacuum Chemical analysis of zirconium powder sulfosalicylic acid spectrophotometric determination of iron content;
--- Determination of silicon content YS/T 574.3 electric vacuum chemical analysis of zirconium powder Molybdenum blue spectrophotometric method;
--- YS/T 574.4 electric vacuum zirconium powder chemical analysis of molybdenum blue spectrophotometric determination of phosphorus content;
Emission spectrometry measurement of calcium, magnesium content --- YS/T 574.5 electric vacuum zirconium powder chemical analysis by inductively coupled plasma;
--- YS/T 574.6 electric vacuum zirconium powder chemical analysis of Chromium Azure S spectrophotometric determination of aluminum content;
--- YS/T 574.7 electric vacuum Chemical analysis of zirconium powder with methylene blue spectrophotometric determination of sulfur content;
Determination of the amount of hydrogen heating thermal conductivity method --- YS/T 574.8 electric vacuum Chemical analysis of zirconium powder with an inert atmosphere.
This section YS/T 574 Part 8.
The partial replacement of YS/T 574.8-2006 "power vacuum combustion gravimetric method determined by chemical analysis of zirconium powder for hydrogen content" (formerly
GB/T 3256.8-1983).
This portion of YS/T 574.8-2006 compared to the main changes are as follows.
--- Changed the measurement method;
--- Measured by the scope of the expansion of 0.005% to 2.00% to 0.005% and 3.00%;
--- Complements the precision and quality assurance and control provisions.
The non-ferrous metal part by the National Standardization Technical Committee and centralized.
This in part by Western Metal Materials Co., Ltd., China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting.
This section participated by CITIC Jinzhou Ferroalloy Co., Ltd., Northwest Nonferrous Metal Research Institute, Northwest Rare Metal Material Research Institute
Drafted.
The main drafters of this section. red Yang Jun, Zhai through Germany, Dan Chen, Cai Weidong, Anbao Lan, Zhang Junfeng, Wang Juxiang, Liu Jianbin.
This part of the standard replaces the previous editions are.
--- YS/T 574.8-2006.
Electric vacuum Chemical analysis of zirconium powder
Determination of the amount of hydrogen an inert atmosphere heating thermal conductivity method
1 Scope
This section provides electrical measuring method vacuum zirconium powder hydrogen content.
This section applies to the determination of zirconium powder for electro - vacuum hydrogen content measurement range (mass fraction). 0.005% to 3.00%.
2 principle of the method
After the sample was heated, in a sample of the hydrogen is released, use of a carrier gas of hydrogen released from the load detection system, the heat due to different gases
Different conductivity, thermal conductivity based on the output electrical signal of the amount of change the system to calculate the hydrogen content in the sample.
3 Materials
3.1 Argon. purity not lower than 99.99%.
3.2 high-purity nickel foil. thickness of 0.1mm ± 0.02mm, each piece of foil weight of about 0.6g.
3.3 tin particles.
3.4 graphite crucible. high-purity graphite crucible.
3.5 Standard substance. should choose the appropriate reference materials, reference materials and analysis principles of chemical composition similar to the sample.
4 Instrument
Pulse heating - thermal conductivity tester. Instrument sensitivity is not less than 0.01μg/g.
Step 5 Analysis
5.1 Warm up
To fully preheated before instrumental analysis, so that the indicators of the instrument reaches the set value.
5.2 Instrument Leak
The use of the instrument or other auxiliary equipment leak detection program to determine the instrument without leakage phenomenon.
5.3 Instrument Calibration
Calibration standard substance (3.5), make the analysis value within the allowable fluctuation range of the standard values.
5.4 blank analysis
Blank value of the instrument should be stable and blank value is not too high and not more than 1μg/g.
5.5 Sample Analysis
5.5.1 Table 1 were weighed according to the weight of the hydrogen content.
Table 1
Hydrogen content /% ~ 0.005 0.100 > 0.100 0.50 > 0.05 1.00 > 1.00 ~ 3.00
Sample weight/g 0.20 ~ 0.10 0.10 ~ 0.05 0.05 ~ 0.03 0.03 ~ 0.01
5.5.2 Determination
Select the optimal assay conditions, will be referred to a good sample (5.5.1), nickel foil (3.2) good package, along with tin particles (3.3) together into the injector
In, automatically by the instrument shows the measurement results.
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