GB/T 4324.27-2012Methods for chemical analysis of tungsten - Part 27:: Determination of carbon content - High frequency combustion-infrared absorption method (English PDF)
钨化学分析方法 第27部分：碳量的测定 高频燃烧红外吸收法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 31, 2012
Implementation date
October 1, 2013
Scope
GB/T 4324.27-2012 is the English-translated version of 钨化学分析方法 第27部分：碳量的测定 高频燃烧红外吸收法.
GB/T 4324.27-2012 is the Chinese standard "Methods for chemical analysis of tungsten - Part 27:: Determination of carbon content - High frequency combustion-infrared absorption method".
Its scope clause reads: GB/T 4324 This section provides for the determination of tungsten powder, tungsten, tungsten oxide carbon content by infrared absorption method.
This Part applies to tungsten powder, tungsten, determination of carbon content of the tungsten oxide. Determination range of 0.0005% to 0.50%. Its clauses include method summary; reagents and materials; instruments and equipment; sample.
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Document preview — GB/T 4324.27-2012
National Standard of the People's Republic of China
- ICS
- 77.120.99
- Classification
- H 63
- Replacing
- GB/T 4324.27-1984
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Method summary
- 3 Reagents and materials
- 4 instruments and equipment
- 5 Sample
1 Scope
GB/T 4324 This section provides for the determination of tungsten powder, tungsten, tungsten oxide carbon content by infrared absorption method.
This Part applies to tungsten powder, tungsten, determination of carbon content of the tungsten oxide. Determination range of 0.0005% to 0.50%.
2 Method summary
Sample high frequency induction furnace in an oxygen stream of heated combustion, carbon dioxide generated by the oxygen contained in the infrared analyzer to the measuring chamber,
Carbon dioxide absorbing specific wavelengths of infrared energy, which is proportional to the absorbed energy and the carbon concentration, the detector according to the measured receiving energy change
Carbon content.
3 Reagents and materials
3.1 iron flux
wFe>=99.8%, wC<=0.0005%, particle size <=1.25mm.
3.2 tungsten tin flux
wC<=0.0010%, granularity <=1.4mm.
3.3 Standard substance (or standard sample)
substance similar to the amount of carbon material to be tested.
3.4 Oxygen
purity of more than 99.95%.
3.5 magnesium perchlorate
dry, granular or flaky.
3.6 caustic soda asbestos
granular.
3.7
quartz wool.
3.8
sulfur trioxide absorber.
3.9 platinized silica gel
a granular form.
3.10 ceramic crucible
constant high temperature burning to a blank value, after cooling stored in a desiccator.
4 instruments and equipment
High frequency induction - infrared absorption analyzer Dingtan. includes a high frequency induction furnace, the intake pipe purifying reagent to detect gas heater catalyst, sulfur trioxide absorption
Close control, infrared detectors, computers and software control systems.
5 Sample
Tungsten remove the skin after pulverized by standard 0.125mm sieve.
Step 6 Analysis
6.1 Warm up
Sufficient warm-up before the instrumental analysis, instrument by instrument manual debugging check the instrument in the normal steady state.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 47350-2026Classification and assessment of electrical contact materials
- GB/T 8320-2025Copper-tungsten and silver-tungsten electrical contacts
- YS/T 1025-2015High-purity tungsten and tungsten alloy sputtering target used in electronic film
- JB/T 5336-2008Tungsten powder for copper-tungsten contact materials - Technical requirements
Similar standards
Editions of GB/T 4324.27
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4324.27-2012 | Methods for chemical analysis of tungsten - Part 27:: Determination of carbon content - High frequency combustion-infrared absorption method | current edition | Current |
| GB/T 4324.27-1984 | Methods for chemical analysis of tungsten - Part 27:: Determination of carbon content - High frequency combustion-infrared absorption method | previous edition | Superseded |
This page sells the current edition, GB/T 4324.27-2012. Earlier editions are listed for reference only.
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Related Standards
GB/T 4324.1-2012 — Methods for chemical analysis of tungsten - Part 1: Determination of lead content - Flame atomic absorption spectrometry
GB/T 4324.10-2012 — Methods for chemical analysis of tungsten - Part 10: Determination of copper content - Flame atomic absorption spectrometry
GB/T 4324.11-2012 — Methods for chemical analysis of tungsten - Part 11: Determination of aluminum content - Inductively coupled plasma atomic emission spectrometry
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