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YS/T 548-2007: High-pure niobium pentoxide
Status: Valid YS/T 548: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 548-2007 | English | 229 |
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High-pure niobium pentoxide
| Valid |
YS/T 548-2007
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| YS/T 548-2006 | English | 239 |
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High-pure niobium pentoxide
| Obsolete |
YS/T 548-2006
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PDF similar to YS/T 548-2007
Basic data | Standard ID | YS/T 548-2007 (YS/T548-2007) | | Description (Translated English) | High-pure niobium pentoxide | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | G13 | | Classification of International Standard | 71.060.20 | | Word Count Estimation | 7,749 | | Date of Issue | 2007-11-14 | | Date of Implementation | 2008-05-01 | | Older Standard (superseded by this standard) | YS/T 548-2006 | | Quoted Standard | GB/T 3249; GB/T 5060; GB/T 5314; GB/T 13390; GB/T 15076 | | Regulation (derived from) | NDRC Notice No. 77 of 2007 | | Issuing agency(ies) | National Development and Reform Commission | | Summary | This standard provides high-purity niobium pentoxide requirements, test methods, test rules, marking, packaging, transportation, storage and purchase order (or contract) content. This standard applies to liquid liquid extraction method were high-purity niobium pentoxide. Products for the production niobate crystal and optical glass additives for use. | YS/T 548-2007: High-pure niobium pentoxide---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.
High-pure niobium pentoxide
ICS 71.060.20
G13
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 548-2006
High-purity niobium pentoxide
Posted 2007-11-14
2008-05-01 implementation
National Development and Reform Commission issued
Foreword
Instead of the standard YS/T 548-2006 "high-purity niobium pentoxide" (formerly GB/T 10578-2003).
Compared with this standard YS/T 548-2006, the main changes are as follows.
--- All grades product by deleting the requirement Cl impurity element, an increase of impurity elements Sb requirements;
--- On the part of impurities in the original standard grade products specified have been adjusted.
This standard by the National Standardization Technical Committee of non-ferrous metals and centralized.
This standard by the Jiujiang non-ferrous metal smelter is responsible for drafting.
This standard by the Ningxia Orient Tantalum Industry Co., Ltd. participated in the drafting.
The main drafters. Zhang Hao, Wang Wei, Zhangjiang Feng, Zhou Huogen, Zhengpei Sheng, Kuang Guozhen.
This standard by the National Standardization Technical Committee is responsible for interpretation of non-ferrous metals.
This standard replaces the standards previously issued as follows.
--- YS/T 548-2006.
High-purity niobium pentoxide
1 Scope
This standard specifies the high-purity niobium pentoxide requirements, test methods, inspection rules, marking, packaging, transportation, storage and purchase order (or close
Same) content.
This standard applies to liquid - liquid extraction method were high-purity niobium pentoxide. Products for the production niobate crystal and optical glass as additive
And other purposes.
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 3249 Determination of refractory metal compound powder size and method of Fisher method
Determination of GB/T 5060 metal powder bulk density Part II. Scott capacity meter method
GB/T 5314 sampling method powder metallurgy
GB/T 13390 metal powder specific surface area by nitrogen adsorption
GB/T 15076 (all parts), chemical analysis of tantalum and niobium
3 Requirements
3.1 Categories
3.1.1 chemical composition is divided into four grades. FNb2O5-048, FNb2O5-045, FNb2O5-04, FNb2O5-035.
3.1.2 Example grades.
expressed powder product
Nb2O
represents niobium pentoxide formula
Purity of the product is represented 99.998%
3.2 Chemical composition
Chemical composition of various grades of products should meet the requirements in Table 1. Nb2O5 content (mass fraction) is 100% minus Table 1 except F real
Measured impurity content (mass fraction).
3.3 Physical properties
When the buyer has requested, the supplier shall provide an average product particle size, bulk density, specific surface area of the measured data.
3.4 appearance quality
Product as a white powder. Visual products without visible inclusions.
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