JPS648298A - Composite plated steel sheet having high corrosion resistance - Google Patents

Composite plated steel sheet having high corrosion resistance

Info

Publication number
JPS648298A
JPS648298A JP16130487A JP16130487A JPS648298A JP S648298 A JPS648298 A JP S648298A JP 16130487 A JP16130487 A JP 16130487A JP 16130487 A JP16130487 A JP 16130487A JP S648298 A JPS648298 A JP S648298A
Authority
JP
Japan
Prior art keywords
steel sheet
corrosion resistance
plating layer
chromate
composite
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
JP16130487A
Other languages
Japanese (ja)
Inventor
Teruaki Isaki
Makoto Yoshida
Masami Osawa
Yukinobu Higuchi
Akinori Maruta
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP16130487A priority Critical patent/JPS648298A/en
Priority to US07/136,842 priority patent/US4800134A/en
Priority to DE8787311503T priority patent/DE3779754T2/en
Priority to EP87311503A priority patent/EP0291606B1/en
Publication of JPS648298A publication Critical patent/JPS648298A/en
Pending legal-status Critical Current

Links

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  • Other Surface Treatments For Metallic Materials (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

PURPOSE:To produce the title composite plated steel sheet having high corrosion resistance by adding fine particles of a hardly soluble chromate and further >=one kind among TiO2, ZnO2, and Cr2O3 to a plating soln., and carrying out cathodic electrolysis when the steel sheet is plated with a Zn-Ni alloy. CONSTITUTION:When the surface of the steel sheet 1 is electroplated with a Zn-Ni composite plating layer, the chromates such as PbCrO4, SrCrO4, and ZnCrO4 effective for improving corrosion resistance as the hardly soluble fine particles 3 having a corrosion preventive property and one or >=two kinds among TiO2, ZrO2, and Cr2O3 are added to the Zn-Ni composite plating bath, and electrolysis is carried out with the steel sheet as a cathode. The chromate dispersed as a eutectoid in the Zn-Ni alloy plating layer 2 is partly dissolved under corrosive environment, a Cr ion (Cr<6+>) is liberated, the ion reacts with the metal of the plating layer to form a chromate film having excellent corrosion resistance, and the corrosion resistance of the stele sheet surface is remarkably improved.
JP16130487A 1987-04-13 1987-06-30 Composite plated steel sheet having high corrosion resistance Pending JPS648298A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP16130487A JPS648298A (en) 1987-06-30 1987-06-30 Composite plated steel sheet having high corrosion resistance
US07/136,842 US4800134A (en) 1987-04-13 1987-12-22 High corrosion resistant plated composite steel strip
DE8787311503T DE3779754T2 (en) 1987-04-13 1987-12-29 VERY CORROSION-RESISTANT, PLATED COMPOSITE STEEL TAPE AND METHOD FOR THE PRODUCTION THEREOF.
EP87311503A EP0291606B1 (en) 1987-04-13 1987-12-29 High corrosion resistant plated composite steel strip and method for producing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16130487A JPS648298A (en) 1987-06-30 1987-06-30 Composite plated steel sheet having high corrosion resistance

Publications (1)

Publication Number Publication Date
JPS648298A true JPS648298A (en) 1989-01-12

Family

ID=15732563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16130487A Pending JPS648298A (en) 1987-04-13 1987-06-30 Composite plated steel sheet having high corrosion resistance

Country Status (1)

Country Link
JP (1) JPS648298A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6096786A (en) * 1983-09-20 1985-05-30 ベスレヘム　スチ−ル　コ−ポレ−シヨン Electroplated product and its production
JPS60141898A (en) * 1983-12-29 1985-07-26 Nippon Steel Corp Composite electroplated steel sheet and its production

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6096786A (en) * 1983-09-20 1985-05-30 ベスレヘム　スチ−ル　コ−ポレ−シヨン Electroplated product and its production
JPS60141898A (en) * 1983-12-29 1985-07-26 Nippon Steel Corp Composite electroplated steel sheet and its production

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