JP7108613B2 - ステンレス鋼表面をベースとするコーキング防止ナノ材料、及びその製造方法 - Google Patents
ステンレス鋼表面をベースとするコーキング防止ナノ材料、及びその製造方法 Download PDFInfo
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Description
(1)水酸化ナトリウム溶液及びアルカリエッチング剤含有溶液を用いてステンレス鋼表面を同時に化学的脱脂及びアルカリエッチングした後、水で洗浄する工程;
(2)工程(1)で処理したステンレス鋼表面を、酸化溶液で酸化した後、水で洗浄する工程;
(3)工程(2)で処理したステンレス鋼表面を、カソードとして電解液に浸漬して電解した後、水で洗浄する工程;
(4)工程(3)で処理したステンレス鋼表面を、温度50~60℃及び湿度60~70%に置き、次いで、温度35~40℃及び湿度40~50%に置いて硬化させる工程。
好ましくは、酸化溶液の温度は75~90℃である。
Claims (8)
- ステンレス鋼表面上のコーキング防止ナノ材料層であって、前記コーキング防止ナノ材料層は、重量パーセントで表して、0~3%の炭素、23~38%の酸素、38~53%のクロム、10~35%の鉄、0~2%のモリブデン、0~4%のニッケル、3.5~5%のケイ素、0~1%のカルシウム、1%未満の不純物元素を含有することを特徴とする、コーキング防止ナノ材料層。
- 前記コーキング防止ナノ材料層は、重量パーセントで表して、0.71%の炭素、34.62%の酸素、42.81%のクロム、13.11%の鉄、3.1%のニッケル、4.73%のケイ素、0.92%のカルシウムを含有し、残部は不純物元素であることを特徴とする、請求項1に記載のコーキング防止ナノ材料層。
- 請求項1又は請求項2に記載のコーキング防止ナノ材料層の製造方法であって:
(1)水酸化ナトリウム溶液及びアルカリエッチング剤含有溶液を用いてステンレス鋼表面を同時に化学的脱脂及びアルカリエッチングした後、水で洗浄する工程;
(2)前記工程(1)で処理した前記ステンレス鋼表面を、酸化溶液で酸化した後、水で洗浄する工程;
(3)前記工程(2)で処理した前記ステンレス鋼表面を、カソードとして電解液に浸漬して電解した後、水で洗浄する工程;
(4)前記工程(3)で処理した前記ステンレス鋼表面を、温度50~60℃及び湿度60~70%に置き、次いで、温度35~40℃及び湿度40~50%に置いて硬化させる工程
を含むことを特徴とする、製造方法。 - 前記工程(1)において、前記水酸化ナトリウム溶液及び前記アルカリエッチング剤含有溶液の温度は、80~85℃であり;
前記水酸化ナトリウム溶液の濃度は、6.5~8%であり;
前記アルカリエッチング剤含有溶液の濃度は、0.3~0.5%であり;
前記アルカリエッチング剤は、HDW-1050アルカリエッチング剤であり;
同時の前記化学的脱脂及びアルカリエッチングは、10~15分間実施され;
前記水での洗浄は、80~85℃の温度の水を用いて実施され、前記洗浄の時間は3~5分間であることを特徴とする、請求項3に記載の製造方法。 - 前記工程(2)において、前記酸化溶液は200~300g/LのCrO3を含有し;
前記酸化溶液の温度は75~90℃であり;
前記酸化溶液のpHは、H2SO4溶液を前記酸化溶液に添加することによって0.4~1.5に調節され;前記H2SO4溶液の濃度は98%であり;
酸化の時間は15~35分であり;
前記工程(2)における酸化後の前記水での洗浄は、25~40℃の水を用いて3~5分間実施され;前記水のpHは>3であることを特徴とする、請求項3又は請求項4に記載の製造方法。 - 前記工程(3)において、前記電解液は100~150g/LのCrO3、80~100g/LのNa2SiO3、15~20g/Lのナノ窒化ケイ素、3~5g/Lのナノ炭化ケイ素を含有し、
前記電解液の温度は40~52℃であり;
前記電解液のpHは、H2SO4溶液を電解液に添加することによって0.5~1.5に調節され;H2SO4溶液の濃度は98%であり;
初期電流強度は40~42A/m2であり、その後、電流強度は式i=3+30/t(式中、iは電流強度、tは時間である)に従って4A/m2まで徐々に低下され;
前記電解の時間は25~55分であり;
前記水での洗浄は、25~40℃の水を用いて3~5分間実施され;水のpHは>3である
ことを特徴とする、請求項3から請求項5のいずれかに記載の製造方法。 - 前記工程(3)において、前記電解は、40~42A/m2の初期電流強度で10~25分間電解すること、及びその後、14~18分の間に式i=3+30/tに従って4A/m2まで徐々に低下される電流強度で電解することを含む、請求項3から請求項6のいずれかに記載の製造方法。
- 前記工程(4)において、2回置くことによる硬化処理の実施時間はそれぞれ3~3.5時間及び48~72時間であることを特徴とする、請求項3から請求項7のいずれかに記載の製造方法。
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Application Number | Priority Date | Filing Date | Title |
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CN201610675706.7 | 2016-08-16 | ||
CN201610675706.7A CN106399990B (zh) | 2016-08-16 | 2016-08-16 | 一种基于不锈钢表面的抗结焦纳米材料及其制备方法 |
PCT/CN2017/097663 WO2018033098A1 (zh) | 2016-08-16 | 2017-08-16 | 一种基于不锈钢表面的抗结焦纳米材料及其制备方法 |
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JP2019528380A JP2019528380A (ja) | 2019-10-10 |
JP7108613B2 true JP7108613B2 (ja) | 2022-07-28 |
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