GB/T 15076.15-2008 Methods for chemical analysis of tantalum and niobium - Determination of hydrogen content
1 Scope
This part specifies a method for the determination of hydrogen content in tantalum and niobium.
This part is applicable to the determination of hydrogen content in tantalum and niobium. The determination range is 0.0005%–0.060%.
2 Principle
After heating the specimen, the hydrogen is released from it and subsequently loaded into the detection system using a carrier gas. Because different gases have different gas thermal conductivities, the hydrogen content in the specimen is then calculated based on the variation of output signal from the thermal conductivity cell.
3 Materials
3.1 Argon: With a purity > 99.99%.
3.2 High-purity nickel foil/nickel basket: With the hydrogen content < 1 μg/g.
3.5 Reference materials: Appropriate reference materials, which, in principle, shall have similar chemical composition to that of the analytical sample.
4 Instrument
Pulse heating—thermal conductivity tester: With a sensitivity ≥ 0.01 μg/g.
5 Specimen
5.1 Specimen specification
The specimen may be in the forms of lumps, crumbs or powder, where the lumps and crumbs shall have uniform particle sizes, while the particles shall be minimized as much as possible.
5.2 Requirements for specimen preparation
During processing, the specimen shall not be overheated to prevent the diffusion of hydrogen from the specimen. The processed specimens shall not be touched by hand to prevent contamination.
Contents Foreword i 1 Scope 2 Principle 3 Materials 4 Instrument 5 Specimen 6 Analytical procedures 7 Precision 8 Quality assurance and control
Standard
GB/T 15076.15-2008 Methods for chemical analysis of tantalum and niobium - Determination of hydrogen content (English Version)
Standard No.
GB/T 15076.15-2008
Status
valid
Language
English
File Format
PDF
Word Count
4000 words
Price(USD)
80.0
Implemented on
2008-9-1
Delivery
via email in 1 business day
Detail of GB/T 15076.15-2008
Standard No.
GB/T 15076.15-2008
English Name
Methods for chemical analysis of tantalum and niobium - Determination of hydrogen content
GB/T 15076.15-2008 Methods for chemical analysis of tantalum and niobium - Determination of hydrogen content
1 Scope
This part specifies a method for the determination of hydrogen content in tantalum and niobium.
This part is applicable to the determination of hydrogen content in tantalum and niobium. The determination range is 0.0005%–0.060%.
2 Principle
After heating the specimen, the hydrogen is released from it and subsequently loaded into the detection system using a carrier gas. Because different gases have different gas thermal conductivities, the hydrogen content in the specimen is then calculated based on the variation of output signal from the thermal conductivity cell.
3 Materials
3.1 Argon: With a purity > 99.99%.
3.2 High-purity nickel foil/nickel basket: With the hydrogen content < 1 μg/g.
3.3 Tin sheets/pellets.
3.4 Graphite crucible: High-purity graphite crucible.
3.5 Reference materials: Appropriate reference materials, which, in principle, shall have similar chemical composition to that of the analytical sample.
4 Instrument
Pulse heating—thermal conductivity tester: With a sensitivity ≥ 0.01 μg/g.
5 Specimen
5.1 Specimen specification
The specimen may be in the forms of lumps, crumbs or powder, where the lumps and crumbs shall have uniform particle sizes, while the particles shall be minimized as much as possible.
5.2 Requirements for specimen preparation
During processing, the specimen shall not be overheated to prevent the diffusion of hydrogen from the specimen. The processed specimens shall not be touched by hand to prevent contamination.
Contents of GB/T 15076.15-2008
Contents
Foreword i
1 Scope
2 Principle
3 Materials
4 Instrument
5 Specimen
6 Analytical procedures
7 Precision
8 Quality assurance and control
