JPS57140867A - Galvanized steel plate with superior corrosion spalling resistance - Google Patents
Galvanized steel plate with superior corrosion spalling resistanceInfo
- Publication number
- JPS57140867A JPS57140867A JP2494081A JP2494081A JPS57140867A JP S57140867 A JPS57140867 A JP S57140867A JP 2494081 A JP2494081 A JP 2494081A JP 2494081 A JP2494081 A JP 2494081A JP S57140867 A JPS57140867 A JP S57140867A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- steel plate
- galvanized
- galvanized steel
- spalling resistance
- 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
Links
Landscapes
- Coating With Molten Metal (AREA)
Abstract
PURPOSE: To enhance the corrosion spalling resistance of a galvanized steel plate by forming an Fe-Zn alloy layer having a specified thickness or above as the alloy layer in the galvanized layer which is in contact with the steel as the base metal of the steel plate.
CONSTITUTION: By heating the galvanized layer of a galvanized steel plate coated with zinc or a zinc alloy or reducing the Al content of a galvanizing bath, mutual diffusion between the layer and the steel as the base metal is facilitated to form an Fe-Zn alloy layer having ≥0.2μm average thickness in the galvanized layer. Thus, even if intergranular corrosion proceeds from the zinc layer side, the propagation can be stopped by the Fe-Zn alloy layer, and corrosion spalling is prevented.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2494081A JPS57140867A (en) | 1981-02-24 | 1981-02-24 | Galvanized steel plate with superior corrosion spalling resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2494081A JPS57140867A (en) | 1981-02-24 | 1981-02-24 | Galvanized steel plate with superior corrosion spalling resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57140867A true JPS57140867A (en) | 1982-08-31 |
Family
ID=12152041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2494081A Pending JPS57140867A (en) | 1981-02-24 | 1981-02-24 | Galvanized steel plate with superior corrosion spalling resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57140867A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4543300A (en) * | 1983-05-14 | 1985-09-24 | Nippon Kokan Kabushiki Kaisha | Iron-zinc alloy electro-galvanized steel sheet having a plurality of iron-zinc alloy coatings |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55152166A (en) * | 1979-05-15 | 1980-11-27 | Nisshin Steel Co Ltd | Improving method of intergrain corrosion resistance of galvanized steel |
-
1981
- 1981-02-24 JP JP2494081A patent/JPS57140867A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55152166A (en) * | 1979-05-15 | 1980-11-27 | Nisshin Steel Co Ltd | Improving method of intergrain corrosion resistance of galvanized steel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4543300A (en) * | 1983-05-14 | 1985-09-24 | Nippon Kokan Kabushiki Kaisha | Iron-zinc alloy electro-galvanized steel sheet having a plurality of iron-zinc alloy coatings |
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