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XB/T 220-2008: Cerium - Terbium oxide
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Cerium - Terbium oxide
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XB/T 220-2008
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Basic data | Standard ID | XB/T 220-2008 (XB/T220-2008) | | Description (Translated English) | Cerium - Terbium oxide | | Sector / Industry | Rare Earth Metal Industry Standard (Recommended) | | Classification of Chinese Standard | H65 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 7,750 | | Date of Issue | 2008-02-01 | | Date of Implementation | 2008-07-01 | | Regulation (derived from) | NDRC Announcement No. 11 of 2008; Ministry of Industry and Information Technology Announcement No. 23 of 2017 | | Issuing agency(ies) | National Development and Reform Commission of the People's Republic of China | | Summary | This standard specifies the requirements, test methods, inspection rules and signs, packaging, transportation and storage of cerium terbium oxide. This standard applies to terbium oxides made by chemical methods for use as three primary color fluorescent materials for lamps. | XB/T 220-2008: Cerium - Terbium 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.
Cerium-Terbium oxide
Book People's Republic of China Rare Earth Industry Standard
XB/T 220-2008
Cerium Terbium Oxide
2008-02-01 released
Implementation of.2008-07-01
Issued by the National Development and Reform Commission of the People's Republic of China
Foreword
This standard was proposed and managed by the National Rare Earth Standardization Technical Committee.
This standard was drafted by Guangdong Zhujiang Rare Earth Co., Ltd.
This standard is composed of Hangzhou Daming Fluorescent Material Co., Ltd., Yixing Xinweilicheng Rare Earth Co., Ltd., Guangdong Jiangmen Keheng Industrial Co., Ltd.,
Xiamen Topstar New Material Co., Ltd. participated in the drafting.
The main drafters of this standard. Jin Yanhua, Deng Hanqin, Tang Yinxuan, Yu Zhichun, Huang Ruitian, Wei Lan.
XB/T 220-2008
Cerium Terbium Oxide
1 scope
This standard specifies the requirements, test methods, inspection rules and signs, packaging, transportation and storage of cerium terbium oxide.
This standard applies to cerium-terbium oxides made by chemical methods and used as three-color fluorescent materials for lamps.
2 Normative references
The clauses in the following documents become clauses of this standard after being quoted. For dated reference documents, all subsequent
Amendments (not including errata content) or revisions do not apply to this standard. However, all parties that have reached an agreement based on this standard are encouraged to study
Is the latest version of these files available? For undated references, the latest version is applicable to this standard.
GB/T 8170 Numerical rounding rules
GB/T 12690 Method for chemical analysis of non-rare earth impurities in rare earth metals and their oxides
GB/T 143635.1 Methods for chemical analysis of rare earth metals and their compounds. Oxalate gravimetric method for the determination of total rare earths
GB/T.2010.1 Test method for physical properties of rare earth metals and their oxides Determination of particle size distribution of rare earth compounds
3 requirements
3.1 Chemical composition
The chemical composition of cerium terbium oxide should meet the requirements of Table 1.If the buyer has special requirements for the product, the supplier and the buyer can negotiate separately.
Table 1
product
Grade
Chemical composition (mass fraction)/%
REO
not less than
CeO2
/REO
Tb4O7
/REO
Impurity content, not more than
Rare earth impurities/REO non-rare earth impurities
La2O3 Pr6O11 Gd2O3 Dy2O3 Y2O3 Fe2O3 SiO2 CaO Cl-
Burn
no greater than
020061 99 61 ± 139 ± 1 0.004 0.005 0.005 0.002 0.002 0.0001 0.005 0.003 0.003 1.0
020065 99 65 ± 1 35 ± 1 0.004 0.005 0.005 0.002 0.002 0.0001 0.005 0.003 0.003 1.0
3.2 Physical properties
3.3 Appearance
The product is brown or light brown powder. The product should be clean and free of visible inclusions.
4 Test method
4.1 The analysis method of the total amount of rare earths (REO) in the product shall be carried out in accordance with the provisions of GB/T 143635.1.
4.2 The analysis method of the content of cerium and terbium and the content of rare earth impurities in the product shall be carried out according to the supplier's current method.
4.3 The analysis method of the non-rare earth impurity content and ignition loss in the product shall be carried out in accordance with the provisions of GB/T 12690.
4.4 The test method of the center particle size of the product shall be carried out in accordance with the provisions of Method 1 in GB/T 2070.1.
4.5 The rounding of values shall be carried out in accordance with the provisions of GB/T 8170.
4.6 Visual inspection of product appearance.
XB/T 220-2008
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