GB/T 13840-1992
Abolished
GB/T 12690.4-2021
Active
National standards
GB/T 12690.4-2021 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 4:Determination of oxygen and nitrogen contents—Impulse-infrared absorption and impulse-thermal conductivity method
GB/T 12690.4-2021 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 4:Determination of oxygen and nitrogen contents—Impulse-infrared absorption and impulse-thermal conductivity method
Basic Information
Standard Code:
GB/T 12690.4-2021
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Analysis methods for rare metals and their alloys
ICS Name:
Other non-ferrous metals and their alloys
Publish Date:
2021-10-11
Implement Date:
2022-05-01
Publisher:
国家市场监督管理总局、国家标准化管理委员会
Technical Committee:
全国稀土标准化技术委员会(SAC/TC 229)
Pages:
7 pages
Scope
本文件规定了稀土金属（除金属镱外)中氧、氮含量的测定方法。
本文件适用于稀土金属（除金属镱外)中氧、氮含量的测定。测定范围（质量分数)：氧 0.005 0%～0.30%；氮 0.002 0%～0.20%。
Development Information
Drafting Units:
包头稀土研究院、国标(北京)检验认证有限公司、钢研纳克检测技术股份有限公司、天津包钢稀土研究院有限责任公司、湖南稀土金属材料研究院、福建省长汀金龙稀土有限公司、国家稀土产品质量监督检验中心
Drafting Persons:
于勇海、吴文琪、蒋天怡、王长华、侯红霞、白伟华、李宏伟、王安丽、吴希桃、王金凤、蔺恩成
Same series standard
GB/T 12690.7-2021 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 7:Determination of silicon content
GB/T 12690.8-2021 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 8:Determination of sodium content
Replace the following standards
Referenced Standards
Related Standards
GB/T 15677-1995
Replaced
GB/T 15677-1995 Lanthanum metal
GB/T 3136-1995
abolished_transferred
GB/T 3136-1995 Tantalum powders
GB/T 3463-1995
Abolished
GB/T 3463-1995 Tantalum wires
GB/T 3628-1995
Replaced
GB/T 3628-1995 Tantalum and tantalum alloy foils
GB/T 16476-1996
Replaced