GB1261424A - Improvements in and relating to the detection of surface coatings - Google Patents

Improvements in and relating to the detection of surface coatings

Info

Publication number
GB1261424A
GB1261424A GB4570969A GB4570969A GB1261424A GB 1261424 A GB1261424 A GB 1261424A GB 4570969 A GB4570969 A GB 4570969A GB 4570969 A GB4570969 A GB 4570969A GB 1261424 A GB1261424 A GB 1261424A
Authority
GB
United Kingdom
Prior art keywords
cell
platinum
capacitor
secs
volts
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
GB4570969A
Inventor
Richard William Billington
John Frederick Sackman
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.)
Wilkinson Sword Ltd
Original Assignee
Wilkinson Sword 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 Wilkinson Sword Ltd filed Critical Wilkinson Sword Ltd
Priority to GB4570969A priority Critical patent/GB1261424A/en
Priority to DE19702041121 priority patent/DE2041121A1/en
Publication of GB1261424A publication Critical patent/GB1261424A/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
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material 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 Electric Means (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

1,261,424. Electro-chemical analysis. WILKINSON SWORD Ltd. Aug.3, 1970 [Sept. 17, 1969], No.45709/69. Heading G1N. The presence of a passivating film on e. g. razor blade strip, is determined by making the strip one electrode of a cell whose other electrode is electro-chemically inert in use e.g. platinum. A first voltage is applied with the platinum as anode for a set time, and then a small reverse voltage is applied (platinum as cathode) and the resulting current is measured. A relay control circuit with capacitor timing is shown. Manual start switch 20 causes all relays to be energized connecting +1À75 volts to the cell; capacitor 22 discharges after e.g. 0À5 secs releasing relay 14 to connect -0À75 volts to the cell and in another e.g. 0À1 secs capacitor 24 discharges sufficiently to release relay 18 which connects the current record 28 in circuit. The cell may be modified by containing the electrolyte in an absorbent pad, to test continuous blade strip.
GB4570969A 1969-09-17 1969-09-17 Improvements in and relating to the detection of surface coatings Expired GB1261424A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4570969A GB1261424A (en) 1969-09-17 1969-09-17 Improvements in and relating to the detection of surface coatings
DE19702041121 DE2041121A1 (en) 1969-09-17 1970-08-19 Method and device for checking a metal surface for the presence of a corrosion protection layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4570969A GB1261424A (en) 1969-09-17 1969-09-17 Improvements in and relating to the detection of surface coatings

Publications (1)

Publication Number Publication Date
GB1261424A true GB1261424A (en) 1972-01-26

Family

ID=10438257

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4570969A Expired GB1261424A (en) 1969-09-17 1969-09-17 Improvements in and relating to the detection of surface coatings

Country Status (2)

Country Link
DE (1) DE2041121A1 (en)
GB (1) GB1261424A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291203A (en) * 1994-07-07 1996-01-17 Avonwood Dev Ltd Monitoring corrosion resistance
US5896034A (en) * 1995-07-06 1999-04-20 Avonwood Developments Limited Method and apparatus for detecting and monitoring corrosion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55149049A (en) * 1979-05-10 1980-11-20 Nippon Paint Co Ltd Testing method for corrosion evaluation of coated metal material and its apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291203A (en) * 1994-07-07 1996-01-17 Avonwood Dev Ltd Monitoring corrosion resistance
GB2291203B (en) * 1994-07-07 1998-12-09 Avonwood Dev Ltd Method and apparatus for detecting and monitoring corrosion
US5896034A (en) * 1995-07-06 1999-04-20 Avonwood Developments Limited Method and apparatus for detecting and monitoring corrosion

Also Published As

Publication number Publication date
DE2041121A1 (en) 1971-03-25

Similar Documents

Publication Publication Date Title
JPS55149049A (en) Testing method for corrosion evaluation of coated metal material and its apparatus
SE443683B (en) Electrochemical cell cathode, process for its preparation and use in an electrochemical cell
ES8501884A1 (en) Electrochemical method of testing for surface-characteristics, and testing apparatus for use in the method.
JPS54146581A (en) Electric chracteristic measuring device for semiconductor chip
GB1434199A (en) Selective electrolytic dissolution of predetermined metals
GB1261424A (en) Improvements in and relating to the detection of surface coatings
JPS5760255A (en) Activating method for hydrogen peroxide electrode for oxygen electrode
GB1353956A (en) Electrochemical cell
Doig et al. Electrochemical dissolution behaviour of iron in dilute sodium hydroxide solution
JPS5666749A (en) Measuring method of activity of animal/botanical tissue
GB1334597A (en) Determination of components in a metallic material
JPS569973A (en) Method for measuring capacity left in alkaline electrolyte cell
JPS5728246A (en) Method and apparatus for measuring sensitivity of stainless steel
GB938587A (en) Electrode measuring device
JPS55146035A (en) Measuring method of concentration of hydrogen peroxide
GB859096A (en) Means for the cathodic protection of ships and the like
JPS5497491A (en) Measuring method of enzyme activity
JPS5392151A (en) Electrochromic indicator
GB1148371A (en) Improvements in or relating to electrochemical cells
GB1507126A (en) Method and apparatus for indicating embrittlement due to hydrogen permeation during surface treatment processes
JPS51123092A (en) Electro-chemical element
Paatsch New Electrochemical Investigations Into the Quality of Sealing Anodized Aluminum
FR2188843A5 (en) Electrochemical gas detection - uses third electrode with generation of counter gas at measuring electrode
Fischer et al. Hydrogen Evolution from CO sub 2-Containing Aqueous Electrolytes
GB579202A (en) Improvements in or relating to electrical methods of and apparatus for determining the thickness of metal coatings