EP0174019B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Steel strip plated with a zinc-based coating layer containing an inorganic dispersoid
Assignee: Nippon Steel Corp
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Filing: 1985-09-04
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Granted: 1989-03-01
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Expires: 2005-09-04
Abstract
No abstract record available.
Inventors
- 👤 Minoru C/O Nippon Steel Corporation Kitayama
- 👤 Yasuhiko C/O Nippon Steel Corporation Miyoshi
- 👤 Kazumi C/O Nippon Steel Corporation Nishimura
- 👤 Yoshio C/O Nippon Steel Corporation Shindo
- 👤 Fumio C/O Nippon Steel Corporation Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 02:18
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/26; C23C2/265; C25; C25D; C25D15/00; C25D15/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
96 words
A zinc-plated steel strip with a zinc-based-coating layer, comprising: a substrate consisting of a steel strip; and at least one surface coating layer plated on at least a portion of at least one surface of the steel strip substrate, the surface coating layer consisting essentially of a matrix consisting of at least one zinc alloy and fine dispersoid particles dispersed in the matrix and consisting of at least one member selected from the group consisting of oxides, carbides, nitrides, borides, phosphides and sulfides of aluminum, iron, titanium, molybdenum, copper, zinc, nickel, cobalt, lanthanum, cerium, and silicon.
Claim 2
Dependent Claim
96 words
A zinc-plated steel strip with a zinc-based-coating layer, comprising: a substrate consisting of a steel strip; and at least one surface coating layer plated on at least a portion of at least one surface of the steel strip substrate, the surface coating layer consisting essentially of a matrix consisting of at least one zinc alloy and fine dispersoid particles dispersed in the matrix and consisting of at least one member selected from the group consisting of oxides, carbides, nitrides, borides, phosphides and sulfides of aluminum, iron, titanium, molybdenum, copper, zinc, nickel, cobalt, lanthanum, cerium, and silicon.
Claim 3
Dependent Claim
42 words
The zinc-plated steel strip as claimed in claim 1, wherein the zinc alloy is selected from alloys of zinc with at least one additional metal member selected from the group consisting of nickel, copper, cobalt, chromium, tellurium, lanthanum, cerium, iron, and manganese.
Claim 4
Dependent Claim
44 words
The zinc-plated steel strip as claimed in claim 1, which further comprises an intermediate coating layer formed between the steel strip substrate and the surface coating layer and consisting of at least one member selected from the group consisting of zinc and zinc alloys.
Claim 5
Dependent Claim
23 words
The zinc-plated steel strip as claimed in claim 3, wherein the surface coating layer covers partially the surface of the steel strip substrate.
Claim 6
Dependent Claim
23 words
The zinc-plated steel strip as claimed in claim 3, wherein the intermediate coating layer partially covers the surface of the steel strip substrate.
Claim 7
Dependent Claim
32 words
The zinc-plated steel strip as claimed in claim 1, wherein the fine dispersoid particles are in an amount of at least 0.01% based on the entire weight of the surface coating layer.
Claim 8
Dependent Claim
33 words
The zinc-plated steel strip as claimed in claim 1, wherein the fine dispersoid particles are in an amount of from 0.01% to 95% based on the entire weight of the surface coating layer.
Claim 9
Dependent Claim
34 words
The zinc-plated steel strip as claimed in claim 7, wherein the fine dispersoid particles are in an amount of from 0.01 % to 30% based on the entire weight of the surface coating layer.
Claim 10
Dependent Claim
34 words
The zinc-plated steel strip as claimed in claim 1 or 3, which further comprises a covering layer formed on the surface coating layer by means of a silane-coupling treatment or a chemical conversion treatment.
Claim 11
Dependent Claim
94 words
The zinc-plated steel strip as claimed in claim 8, wherein the fine dispersoid particles consisting of at least one member selected from oxides, carbides, nitrides, borides, phosphides, and sulfides of aluminum, iron, titanium, and silicon are dispersed in an amount of 0.01% to 30% based on the entire weight of the surface coating layer in a matrix consisting of a zinc alloy of 99.7% by weight or less of zinc with 0.3% by weight or more of at least one additional member selected from the group consisting of nickel, cobalt, chromium, iron, and manganese.
Claim 12
Dependent Claim
36 words
The zinc-plated steel strip as claimed in claim 10, wherein the amount of the additional metal member selected from nickel, cobalt, chromium, iron, and manganese is in the range of from 0.3% to 80% by weight.
Claim 13
Dependent Claim
43 words
The zinc-plated steel strip as claimed in claim 8, wherein the fine dispersoid particles consist of at least one member selected from the group consisting of oxides, carbides, nitrides, borides, phosphides, and sulfides and have an average size of 5 Ilm or less.
Claim 14
Dependent Claim
103 words
The zinc-plated steel strip as claimed in claim 1, wherein the surface coating layer consist essentially of 0.01 % to 30% by weight of the fine dispersoid particles consisting of at least one member selected from the group consisting of oxides, carbides, nitrides, borides, phosphides and sulfides of aluminum, iron titanium and silicon and having an average size of 5 microns or less and the balance of the matrix consisting of a zinc alloy consisting of 0.5% to 80% by weight of at least one member selected from the group consisting of nickel, cobalt, chromium, iron and manganese at the balance of zinc.
Claim 15
Dependent Claim
37 words
The zinc-plated steel strip as claimed in claim 13, wherein the surface coating layer is formed on an intermediate coating layer consisting of at least one member selected from the group consisting of zinc and zinc alloys.
Claim 16
Dependent Claim
111 words
The zinc-plated steel strip as claimed in claim 3, wherein the surface coating layer has a thickness of from 0.1 to 40 pm and comprises 70% to 99.99% by weight of a matrix consisting of a zinc alloy of 20% to 99.7% by weight of zinc with 0.3% to 80% by weight of at least one additional metal member selected form nickel, cobalt, chromium, iron, and manganese, and 0.01% to 30% by weight of fine dispersoid particles consisting of silicon oxide and having an average size of 0.020 µm or less; and the intermediate coating layer has a thickness of from 0.1 to 20 pm and comprises zinc or zinc alloy.
References Cited (Backward Citations)
No citation records indexed.
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