GB684865A - Improvements in the determination of the gas content of liquid metals - Google Patents

Improvements in the determination of the gas content of liquid metals

Info

Publication number
GB684865A
GB684865A GB13193/50A GB1319350A GB684865A GB 684865 A GB684865 A GB 684865A GB 13193/50 A GB13193/50 A GB 13193/50A GB 1319350 A GB1319350 A GB 1319350A GB 684865 A GB684865 A GB 684865A
Authority
GB
United Kingdom
Prior art keywords
tube
metal
hydrogen
palladium
pressure
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
Application number
GB13193/50A
Inventor
Charles Eric Ransley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Aluminum Co Ltd
Original Assignee
British Aluminum Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Aluminum Co Ltd filed Critical British Aluminum Co Ltd
Priority to GB13193/50A priority Critical patent/GB684865A/en
Publication of GB684865A publication Critical patent/GB684865A/en
Expired legal-status Critical Current

Links

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
    • G01N7/10—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
    • G01N27/18—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested
    • G01N27/185—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested using a catharometer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/20—Metals
    • G01N33/202—Constituents thereof
    • G01N33/2022—Non-metallic constituents
    • G01N33/2025—Gaseous constituents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

The content of hydrogen dissolved in a molten metal (e.g aluminium) is measured by causing a free surface of the metal to form within the body of the metal, and determining the equilibrium pressure of molecular hydrogen which develops at this surface. In the apparatus shown in Fig. 1, a palladium tube 2 closed at one end and <PICT:0684865/III/1> <PICT:0684865/III/2> protected by a sheath 8 of porous material, e.g. sintered alumina, is connected to a copper tube 5 surrounded by a protective steel tube 7; the tubes are evacuated through pipe 10 and the palladium tube is then immersed in the metal; hydrogen diffuses through the walls of the tube 2, and from the pressure indicated by manometer 6 the hydrogen content of the metal is calculated. The tube 2 may be made of other substances (e.g. nickel, iron, or refractory material) which are pervious to hydrogen but impervious to the metal. In a modified form of the diffusion head, Fig. 2, (not shown), one or two palladium discs are mounted in a steel disc or annulus. Before using the apparatus an inert gas, e.g. argon, may be bubbled through the porous protective sheath in order to remove air; in this case the device of Fig 1 is modified by providing an annular space around the palladium tube for the inert gas, Fig 3 (not shown). A Bourdon tube may be used in place of the manometer, or the diffusion head may be provided with a flexible wall, the movement of which indicates the pressure. The diffusion head shown in Fig. 5 comprises a platinum filament 51 surrounded by a porous ceramic cover 55; the filament is connected through copper tube 49 and copper lead 48 to an electrical bridge circuit, whereby a current is passed through the filament and its resistance is measured; the decrease in resistance indicates the pressure of hydrogen diffusing through the porous cover 55; inert gas is supplied through valve 58 and tube 49.
GB13193/50A 1950-05-25 1950-05-25 Improvements in the determination of the gas content of liquid metals Expired GB684865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB13193/50A GB684865A (en) 1950-05-25 1950-05-25 Improvements in the determination of the gas content of liquid metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13193/50A GB684865A (en) 1950-05-25 1950-05-25 Improvements in the determination of the gas content of liquid metals

Publications (1)

Publication Number Publication Date
GB684865A true GB684865A (en) 1952-12-24

Family

ID=10018537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13193/50A Expired GB684865A (en) 1950-05-25 1950-05-25 Improvements in the determination of the gas content of liquid metals

Country Status (1)

Country Link
GB (1) GB684865A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724160A (en) * 1951-06-08 1955-11-22 Int Alloys Ltd Method of reducing shrinkage defects in metal castings
US2861450A (en) * 1954-08-10 1958-11-25 British Aluminum Company Ltd Determination of the gas content of liquid metals
US2894393A (en) * 1955-11-26 1959-07-14 Will Corp Flexible coupled manometer
DE1078787B (en) * 1957-09-27 1960-03-31 Fischer Ag Georg Method and device for recording gas delivery diagrams
US3060726A (en) * 1957-02-07 1962-10-30 Westinghouse Electric Corp Hydrogen gauge
US4454748A (en) * 1982-09-28 1984-06-19 Sumitomo Light Metal Industries, Ltd. Apparatus for measuring the content of hydrogen dissolved in a molten metal
FR2556098A1 (en) * 1983-12-06 1985-06-07 Sumitomo Light Metal Ind Apparatus for measuring the concentration of hydrogen dissolved in a molten metal
US4563892A (en) * 1984-07-24 1986-01-14 Aoust Brian G D Total dissolved gas pressure measuring device
US4624128A (en) * 1985-06-18 1986-11-25 Union Carbide Corporation Hydrogen probe
EP0238054A2 (en) * 1986-03-19 1987-09-23 British Steel plc Molten metal gas analysis apparatus
US4702102A (en) * 1983-12-28 1987-10-27 Polaroid Corporation Direct readout dissolved gas measurement apparatus
EP0342154A1 (en) * 1988-05-10 1989-11-15 Alusuisse-Lonza Services Ag Device for measuring the hydrogen concentration in aluminium melts
US5012672A (en) * 1987-09-03 1991-05-07 The United States Of America As Represented By The United States Department Of Energy Hydrogen gas sensor and method of manufacture
US5345808A (en) * 1993-08-30 1994-09-13 Sigworth Geoffrey K Gas analyzer for molten metals
CN101813595B (en) * 2009-07-13 2011-11-23 哈尔滨理工大学 Device of quickly measuring hydrogen content in aluminium alloy fusant
CN109444218A (en) * 2018-12-17 2019-03-08 西南科技大学 Improved ambient condition simulator and application method in a kind of reaction of oxidation kinetics

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724160A (en) * 1951-06-08 1955-11-22 Int Alloys Ltd Method of reducing shrinkage defects in metal castings
US2861450A (en) * 1954-08-10 1958-11-25 British Aluminum Company Ltd Determination of the gas content of liquid metals
DE1084941B (en) * 1954-08-10 1960-07-07 British Aluminium Co Ltd Method and device for determining the hydrogen content of molten metal
US2894393A (en) * 1955-11-26 1959-07-14 Will Corp Flexible coupled manometer
US3060726A (en) * 1957-02-07 1962-10-30 Westinghouse Electric Corp Hydrogen gauge
DE1078787B (en) * 1957-09-27 1960-03-31 Fischer Ag Georg Method and device for recording gas delivery diagrams
US4454748A (en) * 1982-09-28 1984-06-19 Sumitomo Light Metal Industries, Ltd. Apparatus for measuring the content of hydrogen dissolved in a molten metal
FR2556098A1 (en) * 1983-12-06 1985-06-07 Sumitomo Light Metal Ind Apparatus for measuring the concentration of hydrogen dissolved in a molten metal
US4702102A (en) * 1983-12-28 1987-10-27 Polaroid Corporation Direct readout dissolved gas measurement apparatus
US4563892A (en) * 1984-07-24 1986-01-14 Aoust Brian G D Total dissolved gas pressure measuring device
US4624128A (en) * 1985-06-18 1986-11-25 Union Carbide Corporation Hydrogen probe
EP0238054A2 (en) * 1986-03-19 1987-09-23 British Steel plc Molten metal gas analysis apparatus
EP0238054A3 (en) * 1986-03-19 1988-06-01 British Steel Corporation Molten metal gas analysis
US4757707A (en) * 1986-03-19 1988-07-19 British Steel Corporation Molten metal gas analysis
US5012672A (en) * 1987-09-03 1991-05-07 The United States Of America As Represented By The United States Department Of Energy Hydrogen gas sensor and method of manufacture
EP0342154A1 (en) * 1988-05-10 1989-11-15 Alusuisse-Lonza Services Ag Device for measuring the hydrogen concentration in aluminium melts
US5345808A (en) * 1993-08-30 1994-09-13 Sigworth Geoffrey K Gas analyzer for molten metals
CN101813595B (en) * 2009-07-13 2011-11-23 哈尔滨理工大学 Device of quickly measuring hydrogen content in aluminium alloy fusant
CN109444218A (en) * 2018-12-17 2019-03-08 西南科技大学 Improved ambient condition simulator and application method in a kind of reaction of oxidation kinetics
CN109444218B (en) * 2018-12-17 2024-02-20 西南科技大学 Improved environment state simulation device in oxidation kinetics reaction and use method

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