JPH04337098A - Zn-ni-mo multi-ply electrogalvanized steel sheet excellent in corrosion resistance and plating adhesion - Google Patents
Zn-ni-mo multi-ply electrogalvanized steel sheet excellent in corrosion resistance and plating adhesionInfo
- Publication number
- JPH04337098A JPH04337098A JP10730591A JP10730591A JPH04337098A JP H04337098 A JPH04337098 A JP H04337098A JP 10730591 A JP10730591 A JP 10730591A JP 10730591 A JP10730591 A JP 10730591A JP H04337098 A JPH04337098 A JP H04337098A
- Authority
- JP
- Japan
- Prior art keywords
- plating
- layer
- corrosion resistance
- alloy
- adhesion
- 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.)
- Withdrawn
Links
- 238000007747 plating Methods 0.000 title claims abstract description 75
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 26
- 239000010959 steel Substances 0.000 title claims abstract description 26
- 230000007797 corrosion Effects 0.000 title claims abstract description 21
- 238000005260 corrosion Methods 0.000 title claims abstract description 21
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 29
- 239000000956 alloy Substances 0.000 claims abstract description 29
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 229910007567 Zn-Ni Inorganic materials 0.000 claims abstract description 15
- 229910007614 Zn—Ni Inorganic materials 0.000 claims abstract description 15
- 229910000476 molybdenum oxide Inorganic materials 0.000 claims abstract description 15
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910003296 Ni-Mo Inorganic materials 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 abstract description 3
- DDTIGTPWGISMKL-UHFFFAOYSA-N molybdenum nickel Chemical compound [Ni].[Mo] DDTIGTPWGISMKL-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008397 galvanized steel Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 229910001182 Mo alloy Inorganic materials 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 2
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 2
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 description 2
- 239000011686 zinc sulphate Substances 0.000 description 2
- 235000009529 zinc sulphate Nutrition 0.000 description 2
- 229910019614 (NH4)6 Mo7 O24.4H2 O Inorganic materials 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- FIXLYHHVMHXSCP-UHFFFAOYSA-H azane;dihydroxy(dioxo)molybdenum;trioxomolybdenum;tetrahydrate Chemical compound N.N.N.N.N.N.O.O.O.O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O[Mo](O)(=O)=O.O[Mo](O)(=O)=O.O[Mo](O)(=O)=O FIXLYHHVMHXSCP-UHFFFAOYSA-H 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、耐食性、めっき密着性
に優れたＺｎ−Ｎｉ−Ｍｏ系複層電気亜鉛合金めっき鋼
板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Zn-Ni-Mo multilayer electrolytic zinc alloy plated steel sheet having excellent corrosion resistance and plating adhesion.
【０００２】0002
【従来の技術】冷延鋼板の加工性や強度を損わずに量産
化出来る高耐食性鋼板として電気亜鉛めっき鋼板が汎用
されている。近年では寒冷地における冬季の道路凍結防
止用の散布塩に対する自動車の防錆鋼板として亜鉛めっ
き鋼板の使用が試みられ、苛酷な腐食環境での耐食性の
要求が増加している。2. Description of the Related Art Electrogalvanized steel sheets are widely used as highly corrosion-resistant steel sheets that can be mass-produced without impairing the workability or strength of cold-rolled steel sheets. In recent years, attempts have been made to use galvanized steel sheets as anti-rust steel sheets for automobiles in response to salt sprayed to prevent roads from freezing during the winter in cold regions, and the demand for corrosion resistance in harsh corrosive environments has increased.
【０００３】これら亜鉛めっき鋼板の耐食性向上の要求
に対して、亜鉛のめっき量（付着量）を増大することに
よる耐食性の向上が知られているが、めっき量が増すと
、鋼板の加工性等を損うので、この対策にも限界がある
。めっき量の増加以外に亜鉛の溶解を抑制するための合
金めっきが数多く提案されている。これらの多くはＦｅ
、Ｎｉ、Ｃｏといった鉄族元素を合金成分として含有す
るものであり、未塗装あるいは塗装後の耐食性が亜鉛め
っき鋼板に比べて優れる特徴があり、工業的に生産、実
用化されているが、耐食性をさらに向上させることが強
く望まれている。In response to these demands for improving the corrosion resistance of galvanized steel sheets, it is known that corrosion resistance can be improved by increasing the amount of zinc plating (coating amount), but as the amount of plating increases, the workability of the steel sheet etc. This measure also has its limits, as it damages the In addition to increasing the amount of plating, many alloy plating methods have been proposed to suppress dissolution of zinc. Many of these are Fe
It contains iron group elements such as , Ni, and Co as alloying components, and has superior corrosion resistance than galvanized steel sheets either unpainted or after painting, and is industrially produced and put into practical use. There is a strong desire to further improve this.
【０００４】このため、Ｚｎ−Ｎｉ合金めっき中にモリ
ブデンの金属あるいは酸化物を含有させためっき鋼板を
得るために、Ｚｎ−Ｎｉ合金めっき浴中にモリブデン酸
塩を溶解させ、電気めっきする方法が、特開昭６１−３
４１９４号、特開昭６２−５０４９７号に提案されてい
る。[0004] Therefore, in order to obtain a plated steel sheet containing molybdenum metal or oxide in the Zn-Ni alloy plating, a method is proposed in which molybdate is dissolved in a Zn-Ni alloy plating bath and electroplated. , JP-A-61-3
No. 4194 and Japanese Unexamined Patent Publication No. 62-50497.
【０００５】[0005]
【発明が解決しようとする課題】本発明者らは、上記の
公知文献に記載されためっきを詳細に追試、調査したと
ころ下記の問題があることを発見した。すなわち特開昭
６１−３４１９４号では薄い亜鉛めっき層、特開昭６２
−５０４９７号では鋼板上といった酸性溶液で溶解しや
すい表面にＺｎ−Ｎｉ−Ｍｏ合金複合めっきを形成する
ために、鋼板をめっき液に浸漬したさい、亜鉛めっき層
または鋼板表面が溶解し、モリブデン酸化物が置換析出
を起こす。このため、Ｚｎ−Ｎｉ−Ｍｏ合金複合めっき
層の密着性が悪くなる欠点があった。[Problems to be Solved by the Invention] The present inventors conducted detailed additional tests and investigations on the plating described in the above-mentioned known documents and discovered that the following problems existed. That is, in JP-A No. 61-34194, a thin galvanized layer;
-50497, in order to form a Zn-Ni-Mo alloy composite plating on a surface that is easily dissolved in an acidic solution, such as a steel plate, when the steel plate is immersed in a plating solution, the zinc plating layer or the steel plate surface is dissolved and molybdenum oxidation occurs. substances cause displacement precipitation. For this reason, there was a drawback that the adhesion of the Zn-Ni-Mo alloy composite plating layer deteriorated.
【０００６】本発明は、このように、今回はじめて明ら
かになった従来技術の致命的な欠点を有利に解決するた
め、鋼板とＺｎ−Ｎｉ−Ｍｏ合金複合めっき層の間に酸
性溶液に難溶なＺｎ−Ｎｉ合金めっきの第１層を設ける
ことによって、モリブデン酸化物の置換析出を防止し、
耐食性に優れるＺｎ−Ｎｉ−Ｍｏ合金複合めっき層の密
着性を向上させた複層電気亜鉛合金めっき鋼板を提供す
ることを目的とするものである。[0006] In this way, the present invention advantageously solves the fatal shortcomings of the prior art that have been revealed for the first time, by providing a layer between the steel plate and the Zn-Ni-Mo alloy composite plating layer that is hardly soluble in acidic solutions. By providing the first layer of Zn-Ni alloy plating, displacement precipitation of molybdenum oxide is prevented,
The object of the present invention is to provide a multilayer electrolytic zinc alloy plated steel sheet in which the adhesion of a Zn-Ni-Mo alloy composite plating layer, which is excellent in corrosion resistance, is improved.
【０００７】[0007]
【課題を解決するための手段】すなわち、本発明は、鋼
板の少なくとも一方の面に、第１層としてＮｉ含有率２
０ｗｔ％以上、めっき付着量が１０ｍｇ／ｍ２ 〜１０
ｇ／ｍ２のＺｎ−Ｎｉ合金めっき層を形成し、その上に
第２層として付着量が５０ｇ／ｍ２以下、Ｎｉ含有率が
５〜２０ｗｔ％のＺｎ−Ｎｉ合金めっき中にモリブデン
酸化物をＭｏ金属として０．０１〜４０ｗｔ％分散含有
するＺｎ−Ｎｉ−Ｍｏ系合金複合めっきを形成してなる
ことを特徴とする耐食性、めっき密着性に優れたＺｎ−
Ｎｉ−Ｍｏ系複層電気亜鉛合金めっき鋼板を提供するも
のである。[Means for Solving the Problems] That is, the present invention provides a first layer with a Ni content of 2 on at least one surface of a steel plate.
0wt% or more, plating amount 10mg/m2 ~ 10
g/m2 Zn-Ni alloy plating layer is formed, and on top of that, molybdenum oxide is added as a second layer in Zn-Ni alloy plating with an adhesion amount of 50 g/m2 or less and a Ni content of 5 to 20 wt%. A Zn-Ni-Mo based alloy composite plating with excellent corrosion resistance and plating adhesion, which is formed by forming a Zn-Ni-Mo alloy composite plating containing 0.01 to 40 wt% of dispersed metal.
The present invention provides a Ni-Mo based multilayer electrolytic zinc alloy plated steel sheet.
【０００８】[0008]
【作用】以下に本発明をさらに詳細に説明する。[Operation] The present invention will be explained in more detail below.
【０００９】モリブデン酸化物含有めっきはモリブデン
酸化物含有率０．０１ｗｔ％以上（Ｍｏ金属として）で
良好な耐食性を示すが、鋼板上にＭｏ複合めっきを得る
ためにめっき浴中にモリブデン酸塩を添加すると、めっ
き液中での鋼板の溶解によって、モリブデン酸化物が置
換析出する。このため、鋼板とＭｏ複合めっき層の間に
モリブデン酸化物層ができるためにＭｏ複合めっきのめ
っき密着性が悪くなる。[0009] Molybdenum oxide-containing plating exhibits good corrosion resistance when the molybdenum oxide content is 0.01 wt% or more (as Mo metal), but in order to obtain Mo composite plating on a steel sheet, molybdate is added to the plating bath. When added, molybdenum oxide is displaced and precipitated by dissolving the steel sheet in the plating solution. For this reason, a molybdenum oxide layer is formed between the steel sheet and the Mo composite plating layer, resulting in poor plating adhesion of the Mo composite plating.
【００１０】本発明は鋼板あるいはＺｎめっきがめっき
液中で溶解することによって、モリブデン酸化物層が置
換析出することに着目し、めっき液中で溶解を起こしに
くいめっき層を第１層に設けることによって、モリブデ
ン酸化物層の形成を防ぎ、Ｍｏ複合めっき層のめっき密
着性を向上させるものである。[0010] The present invention focuses on the fact that a molybdenum oxide layer is precipitated by displacement when the steel plate or Zn plating is dissolved in a plating solution, and a plating layer that is difficult to dissolve in a plating solution is provided as the first layer. This prevents the formation of a molybdenum oxide layer and improves the plating adhesion of the Mo composite plating layer.
【００１１】Ｎｉ含有率が２０ｗｔ％以上でめっき付着
量が１０ｍｇ／ｍ２ 〜１０ｇ／ｍ２のＺｎ−Ｎｉ合金
めっき層を第１層に設けることによって、めっき液中で
の鋼板の溶解によるモリブデン酸化物層の形成を防ぎ、
耐食性に優れるＺｎ−Ｎｉ−Ｍｏ系合金複合めっき層の
めっき付着性を向上させるものである。次に、めっき合
金組成およびめっき厚さを限定した理由について説明す
る。[0011] By providing the first layer with a Zn-Ni alloy plating layer with a Ni content of 20 wt% or more and a coating weight of 10 mg/m2 to 10 g/m2, molybdenum oxides are formed by dissolving the steel sheet in the plating solution. Prevents the formation of layers,
This improves the plating adhesion of the Zn-Ni-Mo alloy composite plating layer, which has excellent corrosion resistance. Next, the reason for limiting the plating alloy composition and plating thickness will be explained.
【００１２】第１層のＺｎ−Ｎｉ合金めっき層の膜厚は
１０ｍｇ／ｍ２未満では鋼板の表面に均一にＺｎ−Ｎｉ
合金めっき層を形成させるのが困難なため、鋼板の溶解
が起こり、モリブデンの酸化物層が形成される。このた
め密着性の向上効果が得られない。１０ｇ／ｍ２を超え
ると第１層のＺｎ−Ｎｉ合金めっき層がパウダリングを
起こしやすくなるため、やはり密着性が悪くなる。また
、第１層のＮｉ含有率２０ｗｔ％未満ではＺｎ−Ｎｉ合
金めっき層中のＺｎが溶解して、モリブデン酸化物の置
換析出を防ぐことができない。なお、Ｎｉ含有率２０ｗ
ｔ％以上でめっき密着性は向上するが、Ｎｉ含有率３０
ｗｔ％を越えるとさらにめっき密着性は良好となる。こ
のため、第１層のＺｎ−Ｎｉ合金めっき層はＮｉ含有量
２０ｗｔ％以上、めっき付着量１０ｍｇ／ｍ２ 〜１０
ｇ／ｍ２とする。[0012] If the thickness of the first Zn-Ni alloy plating layer is less than 10 mg/m2, Zn-Ni is uniformly coated on the surface of the steel plate.
Since it is difficult to form an alloy plating layer, the steel sheet melts and a molybdenum oxide layer is formed. Therefore, the effect of improving adhesion cannot be obtained. If it exceeds 10 g/m2, the first Zn-Ni alloy plating layer is likely to cause powdering, resulting in poor adhesion. Furthermore, if the Ni content of the first layer is less than 20 wt%, Zn in the Zn-Ni alloy plating layer will dissolve, making it impossible to prevent displacement precipitation of molybdenum oxide. In addition, Ni content rate 20w
Plating adhesion improves at Ni content of 30% or more.
When it exceeds wt%, the plating adhesion becomes even better. Therefore, the first Zn-Ni alloy plating layer has a Ni content of 20 wt% or more and a plating amount of 10 mg/m2 to 10
g/m2.
【００１３】第２層のＺｎ−Ｎｉ−Ｍｏ系合金複合めっ
き層の付着量が５０ｇ／ｍ２を超えるとパウダリングを
起こしやすくなるため、めっき密着性が悪くなる。付着
量は５０ｇ／ｍ２以下の範囲では特に制限はないが、付
着量が少ないと耐食性が低下するため１０ｇ／ｍ２以上
が望ましい。
Ｎｉ含有率が５ｗｔ％未満では耐食性の向上効果が見ら
れず、２０ｗｔ％を超えると耐食性が低下する。また、
モリブデン酸化物の含有率がＭｏ金属で換算して０．０
１ｗｔ％未満では耐食性向上効果が認められず、４０ｗ
ｔ％を超えるとパウダリングを起こしやすくなり、めっ
き密着性が低下する。このため、第２層のＺｎ−Ｎｉ−
Ｍｏ合金複合めっき層の付着量５０ｇ／ｍ２以下、Ｎｉ
含有率５〜２０ｗｔ％、モリブデン酸化物含有率０．０
１〜４０ｗｔ％（Ｍｏ金属換算）とする。If the amount of the second Zn-Ni-Mo alloy composite plating layer exceeds 50 g/m2, powdering tends to occur, resulting in poor plating adhesion. There is no particular restriction on the amount of adhesion as long as it is 50 g/m2 or less, but if the amount of adhesion is small, the corrosion resistance will deteriorate, so it is preferably 10 g/m2 or more. When the Ni content is less than 5 wt%, no improvement in corrosion resistance is observed, and when it exceeds 20 wt%, the corrosion resistance is reduced. Also,
The content of molybdenum oxide is 0.0 in terms of Mo metal.
At less than 1wt%, no corrosion resistance improvement effect was observed, and at 40w
If it exceeds t%, powdering tends to occur and plating adhesion decreases. Therefore, the second layer Zn-Ni-
Coating amount of Mo alloy composite plating layer is 50 g/m2 or less, Ni
Content rate 5-20wt%, molybdenum oxide content rate 0.0
1 to 40 wt% (Mo metal equivalent).
【００１４】[0014]
【実施例】以下、本発明を実施例を挙げて具体的に説明
する。[Examples] The present invention will be specifically explained below with reference to Examples.
【００１５】（実施例１）実施例に用いためっき用鋼板
は全て同一の板厚０．７ｍｍの冷延鋼板とし、脱し、酸
洗の前処理をした後、下記の要領でめっきを行った。
（１）Ｚｎ−Ｎｉ合金第１層のめっき方法めっき浴組成
ＺｎＳＯ４ ・７Ｈ２ Ｏ ５０ｇ／ｌ
、ＮｉＳＯ４ ６Ｈ２ Ｏ ２００
〜３５０ｇ／ｌ、Ｎａ２ ＳＯ４
５０ｇ／ｌめっき条件
ｐＨ２．０、浴温５０℃、
電流密度５０Ａ／ｄｍ２
（２）第２層のＺｎ−Ｎｉ−Ｍｏ合金複合層のめっき方
法
めっき浴組成
ＺｎＳＯ４ ・７Ｈ２ Ｏ １４０ｇ／１、
ＮｉＳＯ４ ・６Ｈ２ Ｏ １００〜２１０
ｇ／ｌＮａ２ ＳＯ４
５０ｇ／ｌ、（ＮＨ４ ）６ Ｍｏ７ Ｏ２４・４
Ｈ２ Ｏ １〜１０ｇ／ｌめっき条件
ｐＨ２．０、浴温５０℃、
電流密度２５Ａ／ｄｍ２(Example 1) The steel plates for plating used in the examples were all cold-rolled steel plates with the same plate thickness of 0.7 mm, and after stripping and pretreatment of pickling, plating was performed in the following manner. . (1) Plating method for Zn-Ni alloy first layer Plating bath composition ZnSO4 7H2 O 50g/l
, NiSO4 6H2 O 200
~350g/l, Na2SO4
50 g/l plating conditions pH 2.0, bath temperature 50°C, current density 50 A/dm2 (2) Plating method for second layer Zn-Ni-Mo alloy composite layer Plating bath composition ZnSO4 7H2 O 140 g/1,
NiSO4 ・6H2 O 100~210
g/lNa2SO4
50g/l, (NH4)6Mo7O24.4
H2O 1-10g/l Plating conditions pH 2.0, bath temperature 50℃, current density 25A/dm2
【００１６】得られた各めっき鋼板についてめっき密着
性、耐食性を次の方法で調査した。
（めっき密着性）１８０℃曲げテープ剥離法によりめっ
きの剥離量によって密着性を評価した。評価は◎：めっ
き剥離なし、○：めっき剥離少、×：めっき剥離多
（耐食性評価）ＪＩＳ Ｚ２３７１−１９５５よる塩
水噴霧試験を行い、赤錆発生までの時間（日数）で耐食
性を評価した。[0016] The plating adhesion and corrosion resistance of each of the plated steel sheets obtained were investigated using the following method. (Plating adhesion) Adhesion was evaluated by the amount of plating peeled off using a 180°C bending tape peeling method. The evaluation was: ◎: No peeling of plating, ○: Little peeling of plating, ×: Much peeling of plating (corrosion resistance evaluation) A salt spray test according to JIS Z2371-1955 was conducted, and corrosion resistance was evaluated based on the time (number of days) until red rust appeared.
【００１７】結果をまとめて第１表に示す。The results are summarized in Table 1.
【００１８】表１から明らかなように、本発明による複
層電気亜鉛合金めっき鋼板は耐食性に優れ、また密着性
が大幅に向上したことがわかる。As is clear from Table 1, the multilayer electrolytic zinc alloy plated steel sheet according to the present invention has excellent corrosion resistance and has significantly improved adhesion.
【００１９】[0019]
【表１】[Table 1]
【００２０】[0020]
【発明の効果】以上説明したように、本発明によれば耐
食性の優れたＺｎ−Ｎｉ−ＭＯ系合金複合めっき密着性
を大幅に向上させることができる。このため、自動車を
はじめとする運輸車両材料、建築用材料、電気機器用材
料に運用することによって工業的に優れた効果が得られ
る。As explained above, according to the present invention, the adhesion of a Zn-Ni-MO alloy composite plating having excellent corrosion resistance can be greatly improved. Therefore, excellent industrial effects can be obtained by applying it to materials for transportation vehicles including automobiles, materials for construction, and materials for electrical equipment.
Claims (1)
としてＮｉ含有率２０ｗｔ％以上、めっき付着量が１０
ｍｇ／ｍ２ 〜１０ｇ／ｍ２のＺｎ−Ｎｉ合金めっき層
を形成し、その上に第２層として付着量が５０ｇ／ｍ２
以下、Ｎｉ含有率が５〜２０ｗｔ％、モリブデン酸化物
をＭｏ金属として０．０１〜４０ｗｔ％分散含有するＺ
ｎ−Ｎｉ−Ｍｏ系合金複合めっきを形成してなることを
特徴とする耐食性、めっき密着性に優れたＺｎ−Ｎｉ−
Ｍｏ系複層電気亜鉛合金めっき鋼板。Claim 1: At least one surface of the steel plate is coated with a first layer having a Ni content of 20 wt% or more and a coating weight of 10%.
A Zn-Ni alloy plating layer of mg/m2 to 10 g/m2 is formed, and a second layer with a coating weight of 50 g/m2 is formed on it.
Hereinafter, Z containing Ni content of 5 to 20 wt% and molybdenum oxide dispersed as Mo metal of 0.01 to 40 wt%
Zn-Ni- with excellent corrosion resistance and plating adhesion, characterized by forming n-Ni-Mo alloy composite plating.
Mo-based multilayer electrolytic zinc alloy plated steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10730591A JPH04337098A (en) | 1991-05-13 | 1991-05-13 | Zn-ni-mo multi-ply electrogalvanized steel sheet excellent in corrosion resistance and plating adhesion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10730591A JPH04337098A (en) | 1991-05-13 | 1991-05-13 | Zn-ni-mo multi-ply electrogalvanized steel sheet excellent in corrosion resistance and plating adhesion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04337098A true JPH04337098A (en) | 1992-11-25 |
Family
ID=14455722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10730591A Withdrawn JPH04337098A (en) | 1991-05-13 | 1991-05-13 | Zn-ni-mo multi-ply electrogalvanized steel sheet excellent in corrosion resistance and plating adhesion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04337098A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006336089A (en) * | 2005-06-03 | 2006-12-14 | Nippon Steel Corp | Highly corrosion resistant surface-treated steel, and coated steel |
| WO2013018633A1 (en) * | 2011-08-02 | 2013-02-07 | ユケン工業株式会社 | Sliding member comprising member plated with zinc alloy, and zinc alloy electroplating solution |
| CN104975313A (en) * | 2014-04-08 | 2015-10-14 | 浙江师范大学 | Preparation process of amorphous nano-crystal composite coating electrode |
| CN110938849A (en) * | 2019-10-29 | 2020-03-31 | 湖北第二师范学院 | Zinc-molybdenum alloy coating titanium alloy and preparation method thereof |
-
1991
- 1991-05-13 JP JP10730591A patent/JPH04337098A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006336089A (en) * | 2005-06-03 | 2006-12-14 | Nippon Steel Corp | Highly corrosion resistant surface-treated steel, and coated steel |
| WO2013018633A1 (en) * | 2011-08-02 | 2013-02-07 | ユケン工業株式会社 | Sliding member comprising member plated with zinc alloy, and zinc alloy electroplating solution |
| JP2013032571A (en) * | 2011-08-02 | 2013-02-14 | Yuken Industry Co Ltd | Sliding member comprising member plated with zinc alloy, and zinc alloy electroplating solution |
| CN104975313A (en) * | 2014-04-08 | 2015-10-14 | 浙江师范大学 | Preparation process of amorphous nano-crystal composite coating electrode |
| CN110938849A (en) * | 2019-10-29 | 2020-03-31 | 湖北第二师范学院 | Zinc-molybdenum alloy coating titanium alloy and preparation method thereof |
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