JPS56158939A - Electrochemical measuring method for secular change of actual member under operation - Google Patents

Electrochemical measuring method for secular change of actual member under operation

Info

Publication number
JPS56158939A
JPS56158939A JP6236880A JP6236880A JPS56158939A JP S56158939 A JPS56158939 A JP S56158939A JP 6236880 A JP6236880 A JP 6236880A JP 6236880 A JP6236880 A JP 6236880A JP S56158939 A JPS56158939 A JP S56158939A
Authority
JP
Japan
Prior art keywords
polished
secular change
polarization characteristics
pipe
under operation
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.)
Pending
Application number
JP6236880A
Other languages
Japanese (ja)
Inventor
Takaharu Kurumachi
Motoroku Nakao
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.)
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP6236880A priority Critical patent/JPS56158939A/en
Publication of JPS56158939A publication Critical patent/JPS56158939A/en
Pending 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
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

PURPOSE:To nondestructively detect the degree of material change of an actual member and to estimate the remaining life with high accuracy by polishing part of said member, bonding a vessel contg. an electrolyte soln. to the polished part, and measuring the polarization characteristics of the metal of the polished part with the polished part as one of poles. CONSTITUTION:In the measurement of the secular change of a high-temp. large- diameter pipe 1 for boilers or the like, the part 2 of the member under operation is polished to get rid of oxide scale or the like, and in order to immerse the part 2 in an electrolyte soln. 4, a vessel 5 is placed on the pipe 1, and is adhered with an antileakage agent 6, whereby these are made watertight. The soln. 4 is then put therein, and with the polished part 2 as one of poles, a counter pole (platinum or the like) 3 is immersed and is connected to a variable DC power source device 8. The polarization characteristics are measured with an ammeter 7. The value measured in this way is compared with the value measuring the polarization characteristics of the new material of the same material as that of the pipe 1, whereby the secular change is known. In this way, the remaining life is made estimatable nondestructively with high accuracy.
JP6236880A 1980-05-12 1980-05-12 Electrochemical measuring method for secular change of actual member under operation Pending JPS56158939A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6236880A JPS56158939A (en) 1980-05-12 1980-05-12 Electrochemical measuring method for secular change of actual member under operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6236880A JPS56158939A (en) 1980-05-12 1980-05-12 Electrochemical measuring method for secular change of actual member under operation

Publications (1)

Publication Number Publication Date
JPS56158939A true JPS56158939A (en) 1981-12-08

Family

ID=13198098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6236880A Pending JPS56158939A (en) 1980-05-12 1980-05-12 Electrochemical measuring method for secular change of actual member under operation

Country Status (1)

Country Link
JP (1) JPS56158939A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61245000A (en) * 1985-04-23 1986-10-31 Kajima Corp Corrosion monitoring method of copper piping
JPH03111752A (en) * 1989-09-27 1991-05-13 Res Dev Corp Of Japan Method for evaluating secular embrittlement and softened damage of chromium molybdenum steel by electrochemical means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61245000A (en) * 1985-04-23 1986-10-31 Kajima Corp Corrosion monitoring method of copper piping
JPH03111752A (en) * 1989-09-27 1991-05-13 Res Dev Corp Of Japan Method for evaluating secular embrittlement and softened damage of chromium molybdenum steel by electrochemical means

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