GB/T 25494-2010 English PDF

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GB/T 25494-2010: Test methods for composition analysis of getters
Status: Valid

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Basic data

Standard ID: GB/T 25494-2010 (GB/T25494-2010)
Description (Translated English): Test methods for composition analysis of getters
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L90
Classification of International Standard: 31-030
Word Count Estimation: 12,191
Date of Issue: 2010-12-01
Date of Implementation: 2011-05-01
Older Standard (superseded by this standard): GB/T 6625-1986; GB/T 6626.2-1986; GB/T 9506.3-1998
Quoted Standard: GB/T 4314
Regulation (derived from): Announcement of Newly Approved National Standards No. 9, 2010 (No. 164 overall)
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 evaporable material containing barium getter film and evapotranspiration barium barium method of measuring the amount of mercury released mercury getter test method, nitrogen-doped compound containing nitrogen getter test methods evaporable getter nickel detection methods. This standard applies to devices with vacuum getter.

GB/T 25494-2010: Test methods for composition analysis of getters

---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.
Test methods for composition analysis of getters ICS 31-030 L90 National Standards of People's Republic of China Replacing GB/T 9506.3-1998, GB/T 6626.2-1986, GB/T 6625-1986 Getter composition analysis test methods Issued on. 2010-12-01 2011-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is the integration of the following criteria after revising. --- GB/T 9506.3-1988 "barium evaporable getter material contained barium and determining the amount of the film"; --- GB/T 6626.2-1986 "mercury releasing getter Performance Test Method Test Method of mercury releasing getter mercury content"; --- GB/T 6625-1986 "doped getter nitrogen content of the test method." This standard compared with the original standard main changes are as follows. --- New normative references in GB/T 4314 "getter term"; --- Central Africa original standard volume percent concentration, volume concentration, equivalent concentration revised International System of Units International System of Units; --- Canceled a GB/T 9506.3-1988 "barium evaporable getter material contained barium and determining the amount of the film" middle of the test equipment , The type of restriction and appropriate steps have been revised; --- Revised the original GB/T 9506.3-1988 "barium evaporable getter material contained barium and determining the amount of the film" with some of the standard solution Made calculation errors; --- Increase evaporable getter nickel content test principle, test methods; --- The content and structure of each test method is adjusted to be consistent; --- According to GB/T 1.1-2000 requirements were revised format. This standard replaces the following criteria. --- GB/T 9506.3-1988 "barium evaporable getter material contained barium and determining the amount of the film"; --- GB/T 6626.2-1986 "mercury releasing getter Performance Test Method Test Method of mercury releasing getter mercury content"; --- GB/T 6625-1986 "doped getter nitrogen content of the test method." This standard by the National Standardization Technical Committee of semiconductor equipment and materials and focal points. This standard was drafted. Nanjing SAES Huadong Vacuum Material Co., Ltd., the Ministry of Information Industry and the Institute of Electronics Industry Standardization, China Electronics Technology Group Corporation 12th Research Institute. The main drafters of this standard. Letter Xue Ying, Guo Weibin, ZHANG Ju first, Liu Yun. This standard replaces the standards previously issued as follows. --- GB/T 9506.3-1988; --- GB/T 6626.2-1986; --- GB/T 6625-1986. Getter composition analysis test methods

1 Scope

This standard specifies the barium evaporable getter material contained evapotranspiration and determination of the amount of film of barium, barium, mercury releasing getter mercury content of the test method, Doped getter compound contained nitrogen content of the test method, NEG nickel content detection method. This standard applies to devices with a vacuum getter.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 4314 getter term

3 Terms

GB/T 4314 as determined by the terms and definitions apply to this standard.

4 Determination of barium evaporable getter material contained in the film and the amount of barium

4.1 gravimetric method 4.1.1 Application Gravimetric method applies to compound barium getter carrier measurement when large steamed barium barium film to 20mg, also applies to the barium film evaporated Determination of barium. 4.1.2 Principle Barium barium or steam contained in the film getter barium compound in the form of barium sulfate precipitation, precipitate after filtration, ash and burning said Weight, in terms of barium. 4.1.3 Reagents and materials a) hydrochloric acid solution (21%). The AR concentrated hydrochloric acid and an equal volume of deionized water and mix; b) hydrochloric acid solution (0.5%). 1 AR concentrated hydrochloric acid and 87.5 parts of deionized water were mixed; c) sulfuric acid solution (36%). 1 part of concentrated sulfuric acid and 3 parts of analytically pure deionized water and mix. 4.1.4 Equipment and containers a) analytical balance with an accuracy of 0.1mg; b) box-type furnace, the maximum temperature of 1000 ℃; c) a ceramic crucible; d) triangular beaker; e) flask; f) ash-free filter paper. 4.1.5 Analysis of step 4.1.5.1 take one or more of the getter material contained about 0.5g, placed in 500mL beaker (steamed for barium film on the bulb can be steamed The nearly dry barium to 500mL beaker was washed with a small amount of 0.5% hydrochloric acid solution) was added 21% hydrochloric acid solution 25mL, and cook until heated to dissolve. 4.1.5.2 deionized water to 200mL, boiled, slowly adding 36% sulfuric acid solution 15mL, stirring constantly, barium sulfate completely After precipitation, 36% sulfuric acid was added about 1mL (sulfuric acid solution should be added slowly, stirring constantly to avoid splashing out of precipitation wounding). ......

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