JP2015526599A - 金属部材の腐食−保護連続表面処理のための方法 - Google Patents
金属部材の腐食−保護連続表面処理のための方法 Download PDFInfo
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Abstract
Description
Zmax=0.0004x(pH−9)×[FA]+0.6×[Y]
pH:pH値
Znmax:溶解亜鉛の濃度の最大値(mmol/L)
[FA]:遊離アルカリ度(mmol/L)
[Y]:P2O6として計算される水溶性縮合リン酸塩の形態、ならびに/または−COOX1/n、−OPO3X2/n、および/もしくは−PO3X2/nから選択される少なくとも1つの官能基を含む水溶性有機化合物の形態の錯化剤Yの濃度(mmol/L)。式中、Xは、それぞれ原子価nを有する水素原子あるいはアルカリおよび/またはアルカリ土類金属原子のいずれかを表す。
VB:浴容積(m3)
Znmax:溶解亜鉛の最大濃度(mmol/L)
MZn:亜鉛のモル質量(g/mol)
ΔMZn:金属部材の亜鉛表面に基づく表面規格化ピックリング除去(surface−normalized pickling removal)(g/m2)。
Znmax=0.0004×(pH−9)×[FA]+0.5×[Y]
pH:pH値
Znmax:溶解亜鉛の濃度の最大値(mmol/L)
[FA]:遊離アルカリ度(mmol/L)
[Y]:P2O6として計算される水溶性縮合リン酸塩の形態、ならびに/または、−COOX1/n、−OPO3X2/n、および/もしくは−PO3X2/nから選択される少なくとも1つの官能基を含む水溶性有機化合物の形態の錯化剤Yの全濃度(mmol/L)。式中、Xは、それぞれ原子価nを有する水素原子あるいはアルカリおよび/またはアルカリ土類金属原子のいずれかを表す。
a)0.05〜2g/Lの鉄(III)イオン
b)0.1〜4g/Lのリン酸イオン
c)−COOX1/n、−OPO3X2/nおよび/もしくは−PO3X2/n(式中、Xは、それぞれ原子価nを有する水素原子あるいはアルカリおよび/またはアルカリ土類金属原子のいずれかを表す)から選択される少なくとも1つの官能基を含む有機化合物c1)から選択される、かつ/または−PO4として計算される縮合リン酸塩c2)から選択される少なくとも0.1g/Lの錯化剤Y、
d)合計で0.01〜10g/Lの非イオン性界面活性剤
e)合計で10mg/L未満のニッケル、コバルト、マンガン、モリブデン、クロムおよび/またはセリウムの金属のイオン性化合物、特に1mg/L未満のニッケルおよび/またはコバルトの金属のイオン性化合物。
ここで、PO4として計算される10g/L以下の縮合リン酸塩を含み、成分c1)およびc2)の合計と鉄(III)イオンとのモル比は1:1よりも大きい。
1.実施例A1〜3、B1〜4、C1〜4、D1〜5、E1〜2、F1〜6に対応する組成物を用い、薄板を3分間、60℃で浸漬してアルカリ前処理(表2および各基本配合については表1を参照)、
2.薄板を脱イオン水(κ<1μScm−1)に30秒間、25℃で浸漬してすすぎ、
3.以下を含む酸性の水性組成物に2分間、30℃で浸漬して無機化成処理(アルミニウム薄板からのピックリング除去は、0.05g/m2未満。示差重量分析(differential gravimetric analysis)により測定。)0.15g/L H2ZrF6 40ppm 遊離フッ化物(イオン選択性複合電極を用いて測定)pH 4.5、
4.薄板を脱イオン水(κ<1μScm−1)に30秒間、25℃で浸漬してすすぎ、
5.乾燥した皮膜厚さ20±2μmのカソード浸漬被覆(Cathoguard 500、BASF)の析出。浸漬被覆は、25分間、180℃で焼き付けた。
B4:<0.24mg/L(<0.004mmol/L)
C4:1.2mg/L(0.018mmol/L)
F6:484mg/L(7.4mmol/L)
Claims (12)
- アルミニウムの表面を有する金属部材ならびに亜鉛の表面を有する部材を装置タンクに入れたアルカリ浴溶液と接触させることによって、これらに湿式化学前処理を施し、および、前記金属部材のアルミニウムの少なくとも前記表面のウェットオンウェット化成処理を引き続き行い、前記湿式化学前処理における前記アルカリ浴溶液のpHは10より大きく、および遊離アルカリ度は少なくとも0.5ポイントではあるが50ポイント未満であり、前記装置タンクの前記アルカリ浴溶液中の溶解亜鉛の濃度の以下の最大値を超えない:
Znmax=0.0004×(pH−9)×[FA]+0.6×[Y]
pH:pH値
Znmax:溶解亜鉛の濃度の最大値(mmol/L)
[FA]:遊離アルカリ度(mmol/L)
[Y]:P2O6として計算される水溶性縮合リン酸塩の形態、ならびに/または−COOX1/n、−OPO3X2/n、および/もしくは−PO3X2/nから選択される少なくとも1つの官能基を含む水溶性有機化合物の形態の錯化剤Yの濃度(mmol/L)(式中、Xは、それぞれ原子価nを有する水素原子あるいはアルカリおよび/またはアルカリ土類金属原子のいずれかを表す)、
金属部材の連続湿式化学表面処理のための方法。 - 前記湿式化学前処理における前記最大値Znmaxの超過が、前記装置タンクの前記アルカリ浴溶液から溶解亜鉛を連続的または不連続的に除去することによって防止され、これが、溶解亜鉛を含む前記装置タンクの前記アルカリ浴溶液の少なくとも一部を単に廃棄することによって、および、前記アルカリ浴溶液の有効成分のみを含むアルカリ溶液の別の部分を前記装置タンクに単に添加することによって行われるのではないことを特徴とする請求項1および2の一項または両方の項に記載の方法。
- 前記湿式化学前処理における前記最大値Znmaxの超過が、硫化物イオンの源である水溶性化合物を、前記装置タンクの前記アルカリ浴溶液の少なくとも一部に添加し、および、前記アルカリ浴溶液のこの部分内で生成する固形部分を前記アルカリ浴溶液から、任意選択で分離することによって防止されることを特徴とする請求項1から3の一項または複数の項に記載の方法。
- 硫化物イオンの源である水溶性化合物が添加される前記装置タンクの前記アルカリ浴溶液の前記部分が、最低40℃、ただし好ましくは65℃未満の温度を有することを特徴とする請求項4に記載の方法。
- 部分量が、硫化物イオンの源である部分量の前記水溶性化合物が添加される前記装置タンクの前記アルカリ浴溶液から連続的に取り出され、その後、前記アルカリ浴溶液のこれらの部分量内で生成される前記固形部分が、前記アルカリ浴溶液から濾過により分離され、および前記濾液が、次に前記装置タンクの前記アルカリ浴溶液中に再循環されることを特徴とする前記請求項4および5の一項または両方の項に記載の方法。
- 前記装置タンクの前記アルカリ浴溶液中に再循環される前に、硫化物イオンの源である過剰な水溶性化合物を低減するために、水溶性酸化剤、好ましくは過酸化水素が前記濾液に添加され、この酸化剤の標準還元電位が+0,6V(SHE)よりも高いことを特徴とする請求項6に記載の方法。
- 前記湿式化学前処理の前記アルカリ浴溶液は、水に溶解したアルミニウムを含み、ケイ酸アニオンの源である水溶性化合物が前記装置タンクの前記アルカリ浴溶液の少なくとも一部に添加されることから、前記装置タンクの前記アルカリ浴溶液中の溶解アルミニウムの濃度に対する20mmol/L、好ましくは15mmol/Lの最大値は超えず、および前記アルカリ浴溶液のこの部分内で生成する固形部分は、前記アルカリ浴溶液から濾過により任意選択で分離されることを特徴とする請求項1から7の一項または複数の項に記載の方法。
- 部分量が、ケイ酸アニオンの源である部分量の前記水溶性化合物が添加される前記装置タンクの前記アルカリ浴溶液から連続的に取り出され、その後、前記アルカリ浴溶液のこれらの部分量内で生成される前記固形部分が、前記アルカリ浴溶液から濾過により分離され、および前記濾液が、次に前記装置タンクの前記アルカリ浴溶液中に再循環されることを特徴とする請求項8に記載の方法。
- 前記湿式化学前処理に続く、酸性の水性組成物を用いる前記化成処理およびそれとの接触が、アルミニウムの前記表面が0.1g/m2未満のピックリング除去を受ける一定の時間行われることを特徴とする請求項1から9の一項または複数の項に記載の方法。
- 前記湿式化学前処理に続く前記化成処理が、前記元素Zr、Tiおよび/またはSiの水溶性化合物ならびに任意選択でフッ化物イオンの源である化合物を含む酸性の水性組成物を用いて行われることを特徴とする請求項1から10の一項または複数の項に記載の方法。
- 表面が少なくとも2%アルミニウム表面から構成され、亜鉛の表面部分が好ましくは少なくとも5%である、複合材設計を有する金属部材が前処理されることを特徴とする前記請求項3から11の一項または複数の項に記載の方法。
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DE102012215679.8 | 2012-09-04 | ||
PCT/EP2013/067542 WO2014037234A1 (de) | 2012-09-04 | 2013-08-23 | Verfahren zur korrosionsschützenden oberflächenbehandlung von metallischen bauteilen in serie |
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DE102014223169A1 (de) | 2014-11-13 | 2016-05-19 | Henkel Ag & Co. Kgaa | Verfahren zur selektiven Entfernung von Zink-Ionen aus alkalischen Badlösungen in der Oberflächenbehandlung von metallischen Bauteilen in Serie |
KR102373768B1 (ko) * | 2016-04-29 | 2022-03-15 | 케메탈 게엠베하 | 재료의 피클링이 감소된 금속 표면의 부식방지 처리 방법 |
PL3456864T3 (pl) * | 2017-09-18 | 2020-05-18 | Henkel Ag & Co. Kgaa | Dwuetapowa obróbka wstępna aluminium, zwłaszcza stopów odlewniczych aluminium, obejmująca wytrawianie i obróbkę konwersyjną |
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DE19857799A1 (de) * | 1998-12-15 | 2000-06-21 | Henkel Kgaa | Verfahren zum Steuern einer Behandlungslinie |
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DE112009003274A5 (de) * | 2008-11-03 | 2012-09-20 | Thomas König | Beizverfahren und beizanlage |
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JP2000144445A (ja) * | 1998-09-08 | 2000-05-26 | Nippon Parkerizing Co Ltd | 金属材料のアルカリ脱脂処理液およびその使用方法 |
JP2001131789A (ja) * | 1999-10-29 | 2001-05-15 | Nisshin Steel Co Ltd | 電気めっき鋼板の前処理方法および前処理装置 |
WO2011098322A1 (de) * | 2010-02-09 | 2011-08-18 | Henkel Ag & Co. Kgaa | Zusammensetzung für die alkalische passivierung von zinkoberflächen |
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CN104685100A (zh) | 2015-06-03 |
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CA2883030C (en) | 2020-07-28 |
CA2883030A1 (en) | 2014-03-13 |
EP2893054A1 (de) | 2015-07-15 |
AU2013311905A1 (en) | 2015-03-19 |
ES2587881T3 (es) | 2016-10-27 |
PL2893054T3 (pl) | 2016-11-30 |
JP6190459B2 (ja) | 2017-08-30 |
WO2014037234A1 (de) | 2014-03-13 |
US20150176138A1 (en) | 2015-06-25 |
US9932677B2 (en) | 2018-04-03 |
KR20150052194A (ko) | 2015-05-13 |
HUE029898T2 (en) | 2017-04-28 |
KR101961621B1 (ko) | 2019-03-25 |
EP2893054B1 (de) | 2016-05-25 |
DE102012215679A1 (de) | 2014-05-15 |
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