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GB/T 36533-2018Determination of the chemical state of micro-iron in silicate—Auger electron spectroscopy (English PDF)

硅酸盐中微颗粒铁的化学态测定俄歇电子能谱法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 13, 2018

Implementation date

June 1, 2019

Scope

GB/T 36533-2018 is the English-translated version of 硅酸盐中微颗粒铁的化学态测定俄歇电子能谱法.

GB/T 36533-2018 is the Chinese national method for identifying micro-particles of iron in silicate materials and measuring how much of them there is, using Auger electron spectroscopy.

It specifies the principle of the method, the instrument and its calibration, the preparation of the specimen, the measurement procedure and the way the chemical state of the iron is read from the spectrum, together with the calculation of the result and the test report.

It applies to iron micro-particles larger than 30 nm. Materials laboratories working on glass, ceramics and mineral products use it. Issued on 13 July 2018, it has applied since 1 June 2019.

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Document preview — GB/T 36533-2018

National Standard of the People's Republic of China

ICS: 71.040.40
Classification: G 04

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 Principle of the method
5 Sample Preparation
5.1 Sample Charge Effect Control
5.2 Sample ultrathin section
5.3 Sample Installation
6 Analysis step
6.1 Energy Label Correction
6.2 Acquisition Standard Map
7 Expression of analysis results
7.1 full spectrum
7.2 narrow spectrum
7.3 Identification of chemical states of iron elements
7.4 Content calculation
7.5 Reporting measurement results
Appendix A (informative) Determination of the chemical state of elemental nano-iron in silicates
Appendix B (informative) Different chemical states of iron in silicates
Reference

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the Auger electron spectroscopy method for the identification of microparticulate iron in silicate and its content measurement.

This standard applies to the measurement of microparticle iron above 30nm.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 22461-2008 Surface chemical analysis vocabulary

GB/T 26533-2011 General rules for Auger electron spectroscopy

GB/T 29731-2013 Surface chemical analysis High-resolution Auger electron spectrometer element and chemical state analysis with energy calibration

GB/T 30702-2014 Surface chemical analysis Auger electron spectroscopy and X-ray photoelectron spectroscopy experimental determination of relative sensitivity Guidelines for the use of degree factors in the quantitative analysis of homogeneous materials

GB/T 30815-2014 Surface chemical analysis analysis sample preparation and installation method guide

GB/T 32565-2016 Surface chemical analysis Auger electron spectroscopy (AES) data recording and reporting requirements

GB/T 32998-2016 Surface chemical analysis Auger electron energy spectrum charge control and calibration method report specification requirements

3 Terms and definitions

The terms and definitions defined in GB/T 22461-2008 apply to this document.

4 Principle of the method

The basic principle of Auger electron spectroscopy is based on the definition of Chapter 4 of GB/T 26533-2011.

5 Sample preparation

5.1 Sample charge effect control

Preparation of silicate samples containing elemental iron fine particles, using an ultra-thin slicer or a focused ion thinning system The cross section of the fine particles was obtained by slicing, and then analyzed by Auger electron spectroscopy. Try to make the sample and sample stage good when installing the sample.

Electrical contact. Minimize the charge of the insulator silicate fine particles according to the requirements of A.3 of GB/T 32998-2016, and Calculate the charging effect according to the Chinese formula (A.1) of GB/T 32998-2016. The approximate value of the surface potential Ue is given by equation (1).

Ue~rhoZJP(1-delta) (1) In the formula.

rho --- the resistivity of the sample;

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

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