GB797335A - Liquid suspension of magnetic particles for inspection methods - Google Patents

Liquid suspension of magnetic particles for inspection methods

Info

Publication number
GB797335A
GB797335A GB34330/56A GB3433056A GB797335A GB 797335 A GB797335 A GB 797335A GB 34330/56 A GB34330/56 A GB 34330/56A GB 3433056 A GB3433056 A GB 3433056A GB 797335 A GB797335 A GB 797335A
Authority
GB
United Kingdom
Prior art keywords
water
nov
added
iron oxide
magnetic particles
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
GB34330/56A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB797335A publication Critical patent/GB797335A/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
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
    • G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

797,335. Magnetic compositions. GENERAL ELECTRIC CO. Nov. 9, 1956 [Nov. 29, 1955], No. 34330/56. Class 38 (2). A magnetic fluid for testing ferrous parts for flaws comprises iron oxide particles, a rust inhibitor, a dispersing agent comprising an organic compound having a polyethylene glycol base dispersed in water. The rust inhibitor may be sodium nitrite. The iron oxide is added to the water as a paste containing a watersoluble dispersing agent such as castor oil. Also added to the water may be a non-ionic surface-active agent such as alkyl aryl polyether alcohol which acts as stabilizer to prevent the solution from breaking down, and an antifoam agent.
GB34330/56A 1955-11-29 1956-11-09 Liquid suspension of magnetic particles for inspection methods Expired GB797335A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US797335XA 1955-11-29 1955-11-29

Publications (1)

Publication Number Publication Date
GB797335A true GB797335A (en) 1958-07-02

Family

ID=22152450

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34330/56A Expired GB797335A (en) 1955-11-29 1956-11-09 Liquid suspension of magnetic particles for inspection methods

Country Status (1)

Country Link
GB (1) GB797335A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345564A (en) * 1962-10-06 1967-10-03 Toyota Motors Company Ltd Method for non-destructive detection and observation of defects of ferromagnetic steels utilizing an aqueous ferromagnetic solution
US3951881A (en) * 1973-05-16 1976-04-20 Rockwell International Corporation Method of magnetic particle testing using strippable coatings
US4107063A (en) * 1977-03-02 1978-08-15 International Business Machines Corporation Water based selectable charge magnetic inks
US4361806A (en) * 1980-07-07 1982-11-30 Magnaflux Corporation Method using aqueous emulsion having magnetizable particles for detecting flaws in magnetizable workpieces
US4812249A (en) * 1986-09-17 1989-03-14 Circle Chemical Company, Inc. Testing system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345564A (en) * 1962-10-06 1967-10-03 Toyota Motors Company Ltd Method for non-destructive detection and observation of defects of ferromagnetic steels utilizing an aqueous ferromagnetic solution
US3951881A (en) * 1973-05-16 1976-04-20 Rockwell International Corporation Method of magnetic particle testing using strippable coatings
US4107063A (en) * 1977-03-02 1978-08-15 International Business Machines Corporation Water based selectable charge magnetic inks
US4361806A (en) * 1980-07-07 1982-11-30 Magnaflux Corporation Method using aqueous emulsion having magnetizable particles for detecting flaws in magnetizable workpieces
US4812249A (en) * 1986-09-17 1989-03-14 Circle Chemical Company, Inc. Testing system

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