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YS/T 547-2007: High-pure tantalum pentoxide
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
YS/T 547-2007	English	229	Add to Cart	3 days [Need to translate]	High-pure tantalum pentoxide
YS/T 547-2006	English	199	Add to Cart	2 days [Need to translate]	High-pure tantalum pentoxide

YS/T 547-2007: High-pure tantalum 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 tantalum pentoxide ICS 71.060.20 G13 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 547-2006 High-purity tantalum pentoxide Posted 2007-11-14 2008-05-01 implementation National Development and Reform Commission issued

Foreword

Instead of the standard YS/T 547-2006 "high-purity tantalum pentoxide" (formerly GB/T 10577-1989). This standard has the following changes compared with the YS/T 547-2006. --- FTa2O5-045 grades impurity element specified by the 16 kinds increased to 25 kinds; --- FTa2O5-04 grades impurity element specified by the 13 kinds increased to 25 kinds; --- FTa2O5-035 grades impurity element specified by the 13 kinds increased to 16 kinds; --- On the part of impurities in the original standard product grades as specified has 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, Kuangguo Zhen, Zhengpei Sheng, Zhou Huogen. 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 547-2006. High-purity tantalum pentoxide

1 Scope

This standard specifies the high-purity tantalum pentoxide requirements, test methods, inspection rules, marking, packaging, transportation, storage and purchase order content. This standard applies to liquid - liquid extraction method were high-purity tantalum pentoxide. Products for the production tantalate crystals for optical glass and additives 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 three grades. FTa2O5-045, FTa2O5-04, FTa2O5-035. 3.1.2 Example grades.  expressed powder product Ta2O  represents tantalum pentoxide of the formula  Purity of the product is represented  99.995% 3.2 Chemical composition Chemical composition of various grades of products should meet the requirements in Table 1. 3.3 Physical properties When the buyer has requested, it shall provide the average particle size, bulk density, specific surface area of the measured data. 3.4 appearance quality Product as a white powder, should be no visual evidence of inclusions. ...