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GB/T 15247-2008 English PDF

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GB/T 15247-2008: Microbeam analysis -- Electron probe microanalysis -- Guidelines for determining the carbon content of steels using calibration curve method
Status: Valid

GB/T 15247: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 15247-2008	English	234	Add to Cart	3 days [Need to translate]	Microbeam analysis -- Electron probe microanalysis -- Guidelines for determining the carbon content of steels using calibration curve method	Valid	GB/T 15247-2008
GB/T 15247-1994	English	279	Add to Cart	3 days [Need to translate]	Electron probe quantitative analysis method of carbon in carbon steel and low alloy steel--Sensitivity curve method (detection limit method)	Obsolete	GB/T 15247-1994

PDF similar to GB/T 15247-2008

Standard similar to GB/T 15247-2008

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Basic data

Standard ID	GB/T 15247-2008 (GB/T15247-2008)
Description (Translated English)	Microbeam analysis -- Electron probe microanalysis -- Guidelines for determining the carbon content of steels using calibration curve method
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	N33
Classification of International Standard	17.180.30
Word Count Estimation	12,139
Date of Issue	2008-08-20
Date of Implementation	2009-04-01
Older Standard (superseded by this standard)	GB/T 15247-1994
Adopted Standard	ISO 16592-2006, IDT
Regulation (derived from)	Announcement of Newly Approved National Standards No. 14 of 2008 (total 127)
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 determination by electron microprobe carbon and low alloy steel (other alloying elements content of less than 2%) carbon content in the calibration curve method. This standard includes sample preparation, x- ray inspection, calibration curve established and carbon content detection uncertainty assessment. This standard applies to the determination of the carbon content of less than 1% carbon content, when the carbon content is higher than 1%, the detection accuracy will be greatly affected, do not apply to this standard. This standard applies to vertically incident mode and spectrometer, NA spectrometer.

GB/T 15247-2008: Microbeam analysis -- Electron probe microanalysis -- Guidelines for determining the carbon content of steels using calibration curve method

---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.
Microbeam analysis. Electron probe microanalysis. Guidelines for determining the carbon content of steels using calibration curve method ICS 17.180.30 N33 National Standards of People's Republic of China GB/T 15247-2008/ISO 16592.2006 Replacing GB/T 15247-1994 Micro-beam analysis electron probe microanalysis Determination of carbon content in steel calibration curve method (ISO 16592.2006, IDT) Posted 2008-08-20 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is equivalent to international standard ISO 16592.2006 "micro-beam analysis measured electron probe microanalysis --- --- calibration curve method Steel carbon content "(in English). The standard ISO 16592.2006, made the following editorial changes. --- Appendix B CS = 0.44 to CS = 0.444, more reserved one decimal place, with the u (CS) Reserved bits consistent. This standard replaces GB/T 15247-1994 "carbon steel and low alloy steel EPMA quantitative analysis method sensitivity curve (Detection limit method). " This standard and GB/T 15247-1994 The main difference is. --- Standard changed its name to "micro-beam analysis electron probe microanalysis determination of carbon content in steel calibration curve method"; --- In Chapter 1, more clearly defines the scope of this standard; --- In order to analyze the principles set forth in the 3.4 to add a "relationship of the electron beam energy and carbon intensity of Kα peak" and "carbon Kα peak Composition" Two charts; --- Added "Appendix Uncertainty Evaluation Method A calibration curve method to calculate values" and "Appendix B mass fraction of carbon steel Measurement and Evaluation of Uncertainty Example "in Appendix A and Appendix B is an informative annex.; --- Added "3 detects Uncertainty Assessment" content, delete the content of the original standard Chapter 10, "analytical accuracy" of. The Standard Appendix A, Appendix B is an informative annex. This standard by the National Standardization Technical Committee microbeam analysis made. This standard by the National Standardization Technical Committee microbeam analysis. This standard was drafted. Iron and Steel Institute. The main drafters of this standard. Zhuyan Yong, Zhong ago, Mao Yunjing. This standard replaces the standards previously issued as follows. --- GB/T 15247-1994. GB/T 15247-2008/ISO 16592.2006 Micro-beam analysis electron probe microanalysis Determination of carbon content in steel calibration curve method

1 Scope

This standard specifies the determination of carbon and low alloy steel by electron probe (other alloying elements mass fraction of less than 2%) carbon content correction Curve method. This standard includes sample preparation, X- ray detector, a calibration curve to establish and assess the carbon content detection uncertainty. This standard Suitable for the determination of carbon content less than 1% of the carbon content of the steel, when the carbon content of more than 1% detection accuracy will be greatly affected, Does not apply to this standard. This standard applies to vertical manner and the incident wave spectrometer, NA spectrometer.

2 Analysis

2.1 Overview Determination of steel carbon content using a calibration curve, first prepare a suitable reference material. Accurate analysis particular attention to prevent detection test Like surface carbon contamination, to avoid pollution on the carbon content of the test results. Samples and reference materials detected Kα line intensity of carbon required under the same experimental conditions and steps that sample preparation, speed Voltage, beam, beam spot size, count mode point analysis, line analysis steps and methods of backing deductions and so requires the same. 2.2 Reference Materials For detection of the carbon content of the calibration curve, or the need for a set of suitable reference material. For example, the following reference materials. --- Quenched from the austenite zone temperature of Fe-C solid solution. Series reference material should include a range of different carbon contents, and each parameter Test substance requires uniform composition; --- Fe-C compound Fe3C [1]. Reference material and the sample under test carbon Kα peak shape will also not reduce the accuracy of quantitative analysis, and therefore can not be used. 2.3 Sample Preparation 2.3.1 Description When the samples were prepared, and a carbon compound contamination largely formed in the sample surface affect the accuracy of the carbon content analysis. therefore When the sample preparation requires special attention to prevent such contamination. Reference materials and preparation of samples to be tested (mosaic, grinding and polishing) to protect Holding the same. 2.3.2 mosaic Typically the sample without mosaic, but in the analysis of small samples or irregular shape, the need for mosaic. We must recognize mosaic Materials will also become a source of carbon pollution. Many common mosaic material, such as phenolics, doped with copper, aluminum, graphite or resins, the choice To advance its assessment inlay material, to avoid sample contamination caused. When the sample was analyzed mosaic, should try to choose a region near the center of the sample to detect the edges in order to avoid contamination by the inlay material Impact. 2.3.3 polishing and cleaning Prepared sample surface should be smooth, clean and dry. Metallographic samples were prepared in accordance with the requirements of standard sampling methods, such as the use of SiC sand Abrasive paper, the choice of a suitable size polishing paste polishing. The final polishing using a polishing agent with a non-carbonaceous material requirements, such as alumina powder Wait. After polishing, use ultrasonic cleaning to completely remove the sample preparation process may sample surface residual contaminants. 2.4 carbon Kα line intensity detector 2.4.1 electron beam energy and beam Because carbon characteristic X- ray yield is low, and almost all of the base material of carbon Kα line has a strong absorption, so the carbon X- ray GB/T 15247-2008/ISO 16592.2006

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