JP2021507991A - 鋼板表面処理用溶液組成物及びそれを用いて表面処理された鋼板 - Google Patents
鋼板表面処理用溶液組成物及びそれを用いて表面処理された鋼板 Download PDFInfo
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- JP2021507991A JP2021507991A JP2020533585A JP2020533585A JP2021507991A JP 2021507991 A JP2021507991 A JP 2021507991A JP 2020533585 A JP2020533585 A JP 2020533585A JP 2020533585 A JP2020533585 A JP 2020533585A JP 2021507991 A JP2021507991 A JP 2021507991A
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- steel sheet
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- treated steel
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- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/125—Process of deposition of the inorganic material
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- C—CHEMISTRY; METALLURGY
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- C—CHEMISTRY; METALLURGY
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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Abstract
Description
以下、本発明による実施例及び本発明によらない比較例を通じて本発明をより詳細に説明するが、本発明の範囲は下記に提示された実施例により制限されるものではない。
「ニッケルめっき層が形成された鋼板」
鋼板表面へのニッケル層の形成は、ニッケル濃度30g/Lのめっき溶液を55℃で電流7.7kAを印加し、電気めっき方式でめっきした。
コロイダルシリカLudox HSA(固形分30%、粒子サイズ12nm、W.R.Grace & Co.−Conn.)にテトラエトキシシランと、溶剤としてエタノール及び酸度調節剤である酢酸をそれぞれ添加した後、温度が約50℃を超えないように冷却させながら約5時間攪拌した。
1.硫酸耐食性
上記表面処理鋼板を70℃に保持される硫酸50vol%水溶液に6時間浸漬させた後、腐食特性を観察した。その評価基準は次の通りである。
○:15mg/cm2/hr未満
△:15以上65mg/cm2/hr未満
×:65mg/cm2/hr以上
上記表面処理鋼板を60℃に保持される硫酸16.9vol%及び塩酸0.35vol%混合水溶液に6時間浸漬させた後、硫酸−塩酸の複合腐食条件における腐食特性を観察した。その評価基準は次の通りである。
○:3mg/cm2/hr未満
△:3以上6mg/cm2/hr未満
×:6mg/cm2/hr以上
上記表面処理鋼板を70℃に保持される硫酸50vol%水溶液に96時間浸漬して腐食を進行させた後、縦横8ポイントずつ計64ポイントの厚さを測定し、最も薄い厚さを観察した。その評価基準は次の通りである。
○:0.10mm以上
△:0.05mm以上0.10mm未満
×:0.05mm未満
上記表面処理鋼板を150cm×75cm(横×縦)のサイズに裁断して試片を製造し、上記試片の表面をクロスカットガイド(cross cut guide)を用いて横及び縦にそれぞれ100個のマスを形成するように1mm間隔で線を引き、上記100個のマスが形成された部分をエリクソン(erichsen)試験機を用いて6mmの高さに押し上げ、押し上げた部位に剥離テープ(NB−1、Ichiban社(製))を付着した後、剥がしながらエリクソン部分が剥離されるか否かを観察した。その評価基準は次の通りである。
○:表面剥離がない場合
△:表面剥離が100個のうち1個〜3個である場合
×:表面剥離が100個のうち3個を超えた場合
上記表面処理鋼板を直径38mmサイズの鋼板に製造した後、エリクソンCuppingテスター機を用いて7mmの高さに加工した後、70℃に保持される硫酸50vol%水溶液に6時間浸漬させた後、試片の腐食減量を観察した。その評価基準は次の通りである。
○:15mg/cm2/hr未満
△:15以上65mg/cm2/hr未満
×:65mg/cm2/hr以上
Claims (19)
- 鋼板と、
前記鋼板の少なくとも一表面上に形成されたニッケルめっき層と、
前記ニッケルめっき層上に形成された耐食性被膜層と、を含み、
前記耐食性被膜層は、シリカとアルコキシシランの加水分解反応により形成された生成物及びアクリレート系高分子を含み、
炭素(C)25〜65重量%、シリコン(Si)20〜70重量%、酸素(O)1〜40重量%を含み、
シリコン(Si)と酸素との結合(Si−O結合)及びシリコン(Si)と炭素(C)との結合(Si−C結合)の比率が80〜95%:5〜20%である、表面処理された鋼板。 - 前記耐食性被膜層は、
サイズ5〜20nmのシリカを含むコロイダルシリカ30〜50重量%と、
3以上のアルコキシ基を含むシラン40〜60重量%と、
アクリレート系有機モノマー5〜15重量%と、
酸(acid)0.01〜1重量%と、を含む鋼板表面処理用溶液組成物により形成された、請求項1に記載の表面処理された鋼板。 - 前記コロイダルシリカは、シリカ含量が10〜45重量%である、請求項2に記載の表面処理された鋼板。
- 前記シランは、ビニルトリメトキシシラン(Vinyl trimethoxy silane)、ビニルトリエトキシシラン(Vinyl triethoxy silane)、ビニルトリイソプロポキシシラン(Vinyl tri−isopropoxy silane)、3−メタクリロキシプロピルトリメトキシシラン(3−methacryloxypropyl trimethoxy silane)、2−グリシジルオキシプロピルトリメトキシシラン(2−Glycidyloxy propyl trimethoxy silane)、2−グリシジルオキシプロピルトリエトキシシラン(2−Glycidyloxy propyl triethoxy silane)、2−アミノプロピルトリエトキシシラン(2−aminopropyl triethoxy silane)、2−ウレイドアルキルトリエトキシシラン(2−ureidoalkyl triethoxy silane)、テトラエトキシシラン(tetraethoxysilane)、トリエトキシフェニルシラン(Triethoxyphenylsilane)及びトリメトキシフェニルシラン(Trimethoxyphenylsilane)から選択される少なくとも一つである、請求項2に記載の表面処理された鋼板。
- 前記有機モノマーは、アクリル酸グレイシャル(Acrylic acid glacial)、メチルアクリレート(Methyl acrylate)、エチルアクリレート(Ethyl acrylate)、ブチルアクリレート(Butyl acrylate)、2−エチルヘキシルアクリレート(2−Ethylhexyl acrylate)、イソブチルアクリレート(Isobutyl acrylate)、ターシャリーブチルアクリレート(Tertiary butyl acrylate)、ターシャリーブチルメタクリレート(Tertiary butyl methacrylate)、ブタンジオールモノアクリレート(Butanediol monoacrylate)、ラウリルアクリレート(Lauryl acrylate)、ジメチルアミノエチルアクリレート(Dimethylaminoethyl acrylate)及びジヒドロジシクロペンタジエニルアクリレート(Dihydrodicyclopentadienyl acrylate)からなる群から選択される少なくとも一つである、請求項2に記載の表面処理された鋼板。
- 前記酸は、酢酸、ギ酸、乳酸、グルコン酸、硫酸、硝酸、塩酸及びフッ酸からなる群から選択される少なくとも一つである、請求項2に記載の表面処理された鋼板。
- 前記鋼板表面処理用溶液組成物は、1〜15重量%の溶剤をさらに含む、請求項2に記載の表面処理された鋼板。
- 前記溶剤は、メタノール、エタノール、2−プロパノール、2−メトキシプロパノール及び2−ブトキシエタノールからなる群から選択される少なくとも一つである、請求項7に記載の表面処理された鋼板。
- 前記鋼板表面処理用溶液組成物は、環状リング構造を有する有機樹脂0.1〜5.0重量%をさらに含む、請求項2に記載の表面処理された鋼板。
- 前記環状リング構造を有する有機樹脂は、ポリウレタンと、アミノ変性フェノール樹脂と、ポリエステル樹脂と、エポキシ樹脂と、ポリビニルブチラールと、からなる群から選択される少なくとも一つ又はこれら2以上のハイブリッド樹脂である、請求項9に記載の表面処理された鋼板。
- 前記耐食性被膜層は0.1〜50μmの厚さを有する、請求項1に記載の表面処理された鋼板。
- 前記ニッケルめっき層は0.0005〜1.12μmの厚さを有する、請求項1に記載の表面処理された鋼板。
- 前記ニッケルめっき層は5〜10,000mg/m2の付着量を有する、請求項1に記載の表面処理された鋼板。
- 前記鋼板は耐硫酸鋼である、請求項1に記載の表面処理された鋼板。
- 前記耐硫酸鋼は、重量%で、C:0.2%以下(0は除く)、Si:0.5%以下(0は除く)、Mn:1.5%以下(0は除く)、S:0.02%以下、P:0.02%以下、Al:0.1%以下、N:0.008%以下、及びCu:0.1〜0.5%であり、残部Fe及びその他の不可避な不純物を含む、請求項14に記載の表面処理された鋼板。
- 前記耐硫酸鋼は、重量%で、Co:0.03〜0.1%、Ni:0.3%以下(0は除く)、及びSb:0.3%以下(0は除く)のうち少なくとも一つをさらに含む、請求項15に記載の表面処理された鋼板。
- 前記耐硫酸鋼は、重量%で、C:0.03〜0.1%、Si:0.15〜0.35%、Mn:0.5〜1.2、S:0.01%以下、P:0.015%以下、Al:0.02〜0.06、N:0.004%以下、及びCu:0.2〜0.4%であり、残部Fe及びその他の不可避な不純物を含む、請求項14に記載の表面処理された鋼板。
- 前記耐硫酸鋼は、重量%で、Co:0.03〜0.1%、Ni:0.1〜0.25%、及びSb:0.05〜0.2%のうち少なくとも一つをさらに含む、請求項17に記載の表面処理された鋼板。
- 前記耐硫酸鋼は、表面直下に厚さ100〜300nmのCu、Co、Ni及びSbからなる群から選択された少なくとも1種の濃化層が形成された、請求項16又は18に記載の表面処理された鋼板。
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CN111492097A (zh) | 2020-08-04 |
KR102065224B1 (ko) | 2020-01-10 |
EP3730675B1 (en) | 2022-08-24 |
WO2019124865A1 (ko) | 2019-06-27 |
CN111492097B (zh) | 2023-10-24 |
KR20190076647A (ko) | 2019-07-02 |
JP7281467B2 (ja) | 2023-05-25 |
EP3730675A4 (en) | 2021-03-31 |
EP3730675A1 (en) | 2020-10-28 |
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