GB/T 23593-2009 English PDF

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GB/T 23593-2009: Yttrium-europium-gadolinium oxide
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23593-2009	189	Add to Cart	3 days	Yttrium-europium-gadolinium oxide	Valid

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Basic data

Standard ID: GB/T 23593-2009 (GB/T23593-2009)
Description (Translated English): Yttrium-europium-gadolinium oxide
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H65
Classification of International Standard: 77.120.99
Word Count Estimation: 8,820
Date of Issue: 2009-04-23
Date of Implementation: 2010-02-01
Regulation (derived from): National Standard Approval Announcement 2009 No.5 (Total No.145)
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 requirements for yttrium gadolinium oxide, test methods, inspection rules and signs, packaging, transport and storage. This standard applies to the chemical method were yttrium europium, gadolinium oxide, used for the production of fluorescent materials.

GB/T 23593-2009: Yttrium-europium-gadolinium oxide

---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.
Yttrium-europium-gadolinium oxide ICS 77.120.99 H65 National Standards of People's Republic of China Yttrium gadolinium oxide Posted 2009-04-23 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard by the National Standardization Technical Committee rare and centralized. This standard by the Yixing Willy into the new Rare Earth Co., Ltd. is responsible for drafting. This standard by Guangdong Zhujiang Rare Earth Co., Ltd., Institute of Rare Earth New Materials Co., Ltd. participated in the drafting. The main drafters of this standard. Yu Zhichun, Zou Bin, Jin Yanhua, Zhang Yaojing. Yttrium gadolinium oxide

1 Scope

This standard specifies the yttrium gadolinium oxide requirements, test methods, inspection rules and signs, packaging, transportation and storage. This standard applies to chemical method was yttrium gadolinium oxide, for the production of fluorescent materials used.

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 8170 numerical rounding rules GB/T 12690 (all parts), oxides of rare earth metals and their chemical impurity analysis of Central Africa Determination of GB/T 14635 method for chemical analysis of rare earth metals and rare earth compound total Determination of GB/T 20170.1-2006 physical properties of rare earth metals and rare earth compounds tested compound particle size distribution

3 Requirements

3.1 Chemical composition Chemical composition of the product shall comply with the requirements in Table 1. For parties of products with special requirements, supply and demand sides can be negotiated. Table 1 Grades 171 261 171 257 Chemical composition (mass fraction) /% REO, not less than Y2O3/REO Eu2O3/REO Gd2O3/REO Impurity content of not more than Rare earth impurities REO Non-rare earth impurities La2O3 CeO2 Pr6O11 Nd2O3 Sm2O3 Tb4O7 Dy2O3 Ho2O3 Er2O3 Tm2O3 Yb2O3 Lu2O3 Fe2O3 SiO2 CaO CuO PbO NiO Cl- Loss on ignition, not more than 99.0 99.0 61 ± 2 57 ± 2 6 ± 1 8 ± 1 33 ± 2 35 ± 2 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0002 0.0003 0.0003 0.003 0.003 0.001 0.001 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 0.01 0.01 1.0 1.0 ......

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