GB827018A - A method and apparatus for determining the quantity of hydrogen in metal samples - Google Patents
A method and apparatus for determining the quantity of hydrogen in metal samplesInfo
- Publication number
- GB827018A GB827018A GB1134657A GB1134657A GB827018A GB 827018 A GB827018 A GB 827018A GB 1134657 A GB1134657 A GB 1134657A GB 1134657 A GB1134657 A GB 1134657A GB 827018 A GB827018 A GB 827018A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crucible
- sample
- hydrogen
- collection system
- mercury
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000001257 hydrogen Substances 0.000 title abstract 8
- 229910052739 hydrogen Inorganic materials 0.000 title abstract 8
- 229910052751 metal Inorganic materials 0.000 title abstract 8
- 239000002184 metal Substances 0.000 title abstract 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 2
- 239000007789 gas Substances 0.000 abstract 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 6
- 229910052753 mercury Inorganic materials 0.000 abstract 6
- 238000009792 diffusion process Methods 0.000 abstract 3
- 238000002844 melting Methods 0.000 abstract 3
- 230000008018 melting Effects 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 2
- 150000002431 hydrogen Chemical class 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 2
- 238000007789 sealing Methods 0.000 abstract 2
- 229910052715 tantalum Inorganic materials 0.000 abstract 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract 2
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 abstract 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 229910052770 Uranium Inorganic materials 0.000 abstract 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 239000002775 capsule Substances 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 239000011733 molybdenum Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- 239000010936 titanium Substances 0.000 abstract 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052726 zirconium Inorganic materials 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
<PICT:0827018/III/1> <PICT:0827018/III/2> The quantity of hydrogen in metal samples, such as titanium, zirconium, uranium and alloys rich in these metals is characterized by the steps of evacuating an oven and gas collection system of known volume to a pressure below 10-4 mm. Hg. absolute, then sealing the gas collection system from the evacuation means, adding to a crucible contained within the oven a metal sample which evolves only hydrogen when heated to a temperature below its melting point, heating the metal sample to a temperature which is sufficiently high to evolve only hydrogen but which is below the melting point of the sample, collecting the evolved hydrogen in the gas collection system, measuring the pressure of the hydrogen in the gas collection system, then opening the collection system to the evacuating means to remove the collected hydrogen, moving the crucible into a chamber of substantially greater cross-section than the oven, tipping the crucible in the latter chamber to drop the metal sample which has been analysed into a spent sample collection chamber, moving the empty crucible back to the oven, sealing the gas collection system from the evacuating means, and repeating the procedure until all the metal samples have been analysed. The crucible may be thoria-coated tantalum or thoria-coated molybdenum and the sample may be added to the crucible in a perforated tantalum capsule. Measurement is made by means of McLeod or Pirani gauge and the measurement may be recorded automatically. Samples of known weight are loaded into sample arm 14. The mercury is lowered from cut-offs 50 and 52 and the mercury diffusion pump and oil diffusion pump 34 and 60 and mechanical pump 62 are started so as to evacuate the whole system to below 10-4 mm. of mercury absolute. The mercury from reservoirs 56 and 58 is raised into cut-offs 50 and 52 so as to provide a gas collection system bonded by mercury diffusion pump 34 and mercury cut-off 50. The sample passes through chambers 10a and 10b through the hollow centring cylinder 26 and into crucible 22 preferably controlled by magnetic means. The crucible 22 is heated by means of an induction heating coil 24 to a temperature below the melting point of a metal so that only hydrogen evolution will take place. The arrangement of the centring cylinder and counter-weights allows for the sample to be removed from the crucible and replaced by another sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1134657A GB827018A (en) | 1957-04-08 | 1957-04-08 | A method and apparatus for determining the quantity of hydrogen in metal samples |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1134657A GB827018A (en) | 1957-04-08 | 1957-04-08 | A method and apparatus for determining the quantity of hydrogen in metal samples |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB827018A true GB827018A (en) | 1960-01-27 |
Family
ID=9984585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1134657A Expired GB827018A (en) | 1957-04-08 | 1957-04-08 | A method and apparatus for determining the quantity of hydrogen in metal samples |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB827018A (en) |
-
1957
- 1957-04-08 GB GB1134657A patent/GB827018A/en not_active Expired
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