JB/T 9548.4-1999Methods for chemical analysis of iron-chromium-aluminium alloys - Determination of silicon content by perchloric acid dehydration gravimetric method (English PDF)
铁铬铝合金化学分析方法 高氯酸脱水重量法测定硅量
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
August 6, 1999
Implementation date
January 1, 2000
Scope
JB/T 9548.4-1999 is the English-translated version of 铁铬铝合金化学分析方法 高氯酸脱水重量法测定硅量.
JB/T 9548.4-1999 is the Chinese standard "Methods for chemical analysis of iron-chromium-aluminium alloys - Determination of silicon content by perchloric acid dehydration gravimetric method".
Its scope clause reads: This standard specifies the photometric acid dehydration gravimetric method for the determination of silicon content in iron-chromium-aluminium alloys.
This standard is applicable to the determination of silicon content in iron-chromium-aluminium alloys, and the determination range is from 0.10% to 1.00%. Its clauses include method summary.
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Document preview — JB/T 9548.4-1999
National Standard of the People's Republic of China
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- Foreword
- 1 Scope
- 2 Method Summary
- 3 Reagents
- 4 Analytical Procedures
- 5 Calculation of Analysis Results
- 6 Permissible Deviation
1 Scope
This standard specifies the photometric acid dehydration gravimetric method for the determination of silicon content in iron-chromium-aluminium alloys.
This standard is applicable to the determination of silicon content in iron-chromium-aluminium alloys, and the determination range is from 0.10% to 1.00%.
2 Method Summary
The test portion will be dissolved in acid, and will be heated with perchloric acid and smoke to dehydrate the silicic acid, the silicic acid will be filtered, washed and burnt into silicon dioxide. The silicon will be treated with sulfuric acid-hydrofluoric acid to become into silicon tetrafluoride, and the silicon tetrafluoride will evaporate to remove the silicon, hereby, the percentage content of silicon can be calculated according to the difference in mass before and after removing silicon.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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Related Standards
JB/T 9548.5-2015 — Methods for chemical analysis of iron-chromium-aluminium alloys - Part 5: Determination of silicon
JB/T 9548.3-1999 — Methods for chemical analysis of iron-chromium-aluminium alloys - Determination of manganese content by sodium periodate photometric method
JB/T 9548.5-1999 — Methods for chemical analysis of iron-chromium-aluminium alloys - Determination of silicon content by silicomolybdenum blue photometric method
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