GB/T 14321-2022 English PDF

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GB/T 14321-2022: Determination method for quantities of α-Al2O3 phase in alumina with an X-ray diffractometer
Status: Valid

GB/T 14321: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 14321-2022	189	Add to Cart	3 days	Determination method for quantities of α-Al2O3 phase in alumina with an X-ray diffractometer	Valid
GB/T 14321-2008	279	Add to Cart	3 days	Testing method for quantities of α-Al2O3 phase in alumina with an X-ray diffractometer	Obsolete
GB/T 14321-1993	239	Add to Cart	2 days	Testing method for quantities of -Al2O3 phase in alumina with an X-ray diffractometer	Obsolete

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Basic data

Standard ID: GB/T 14321-2022 (GB/T14321-2022)
Description (Translated English): Determination method for quantities of ��-Al2O3 phase in alumina with an X-ray diffractometer
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J43
Word Count Estimation: 9,915
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 14321-2022: Determination method for quantities of α-Al2O3 phase in alumina with an X-ray diffractometer

---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.
Determination method for quantities of α-Al2O3 phase in alumina with an X-ray diffractometer ICS 25.100.70 CCSJ43 National Standards of People's Republic of China Replacing GB/T 14321-2008 X-ray of α-Al2O3 phase in corundum abrasive Quantitative determination method State Administration for Market Regulation Released by the National Standardization Administration directory Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Preparation of analytical samples 1 5 Test equipment and test conditions 2 6 Test Step 3 7 Data processing 3 8 Test report 4 Appendix A (normative) Determination method of KαSi constant 5

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. This document replaces GB/T 14321-2008 "Method for X-ray Quantitative Determination of α-Al2O3 Phase in Corundum Abrasives", and GB/T 14321- Compared with.2008, except for structural adjustment and editorial changes, the main technical changes are as follows. a) The provisions on sampling have been changed (see 4.1, 3.1 of the.2008 edition); b) The provisions on grinding and mixing of samples have been changed (see 4.2, 3.2 of the.2008 edition); c) Changed the provisions on sample preparation (see 4.3, 3.3 of the.2008 edition); d) Changed the test conditions (see 5.2, 4.2 of the.2008 edition); e) Changed the test procedure (see Chapter 6, Chapter 5 of the.2008 edition); f) Deleted the specific value of the KαSi constant (see 6.1 of the.2008 edition); g) Added test report (see Chapter 8). Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Abrasives Standardization Technical Committee (SAC/TC139). This document is drafted by. Zhengzhou Abrasives Grinding Research Institute Co., Ltd. The main drafters of this document. Feng Bingqiang, Zhang Yi, Zhang Linzhou, Xia Zhiwei, Bao Hua, Zhang Liang. The previous versions of the documents replaced by this document are as follows. ---GB/T 14321-1993, GB/T 14321-2008. X-ray of α-Al2O3 phase in corundum abrasive Quantitative determination method

1 Scope

This document specifies a method for the quantitative X-ray determination of α-Al2O3 phase in corundum abrasives. This document applies to the quantitative determination of α-Al2O3 phase in various corundum abrasives.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 4676 Ordinary abrasive sampling method JB/T 6570 Determination method of magnetic content of ordinary abrasives

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 Preparation of analytical samples

4.1 Sampling 4.1.1 Ingot sample Take a statistically representative crystalline block, crush it until it completely passes through a screen with a basic mesh size of 1mm, and then use the JB/T 6570 medium gauge. Determine the iron alloy particle measurement with a magnet to suck out the iron brought in. Mix evenly, reduce to 10g~20g by quartering method, put into sample bag, Dry in an oven at 105 ℃ ~ 110 ℃ for 1 hour, take it out, put it in a desiccator, and cool it for later use. 4.1.2 Abrasive samples According to GB/T 4676 for sampling and reduction. Abrasives with a particle size greater than 1mm shall be sampled according to the method in 4.1.1. Abrasives with a particle size not greater than 1mm are directly reduced to 10g~20g, put into a sample bag, and dried in an oven at 105℃~110℃ 1h, take it out, put it in a desiccator, and cool it for later use. 4.2 Sample grinding and mixing 4.2.1 Use powdered Si with a purity greater than 99.9% (particle size less than 45 μm) as the internal standard substance. 4.2.2 Weigh about 5g of the sample in 4.1.1 or 4.1.2, put it into a corundum mortar and grind it thoroughly, and make it all pass through the mesh. The basic size is ......

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