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특허 상세정보

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Trivalent chromate conversion coating

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C23C-022/24    C23C-022/05    C23C-022/84    C23C-022/82   
미국특허분류(USC) 148/265; 148/244; 148/264; 148/267; 106/014.05
출원번호 US-0056530 (2002-01-24)
발명자 / 주소
  • Diaddario, Jr.,Leonard L.
  • Marzano,Michael
출원인 / 주소
  • Pavco, Inc.
대리인 / 주소
    Fay, Sharpe, Fagan, Minnich &
인용정보 피인용 횟수 : 6  인용 특허 : 29
초록

In a preferred embodiment of the present invention, a conversion coating composition comprising chromium (III) ions, cobalt (II) ions, and nitric acid is provided. The coating composition is substantially free of chromium (VI) ions and substantially free of an oxidizing agent. The present trivalent chromium based conversion coating provides corrosion protection equal to or greater than most hexavalent chromium conversion coatings.

대표
청구항
▼

We claim: 1. A conversion coating bath including a coating composition comprising: chromium (III) ions, cobalt (II) ions, and nitrate ions, wherein said composition is acidic, includes a ratio of nitrate ions to the combination of chromium (III) and cobalt (II) ions of less than 1.5:1, is substantially free of chromium (VI) ions, and is substantially free of oxidizing agents other than said nitrate ions. 2. The bath of claim 1 further comprising water. 3. The bath of claim 1 further comprising sulfate ions. 4. The bath of claim 1 further comp...

이 특허에 인용된 특허 (29)

  1. McMordie Bruce G. ; Mosser Mark F., Anti-fouling coating for turbomachinery.
  2. Claffey William J., Aqueous coating compositions and coated metal surfaces.
  3. Bishop Craig V. (Lakewood OH) Thomay Marlinda J. (Parma OH) Page Billie J. (Cleveland Hts. OH), Black chromium-containing conversion coatings on zinc-nickel and zinc-iron alloys.
  4. Schneider George (Trevose PA), Coating solution having trivalent chromium and manganese for coating metal surfaces.
  5. Guhde Donald J. (Euclid OH) Burdt Dale M. (North Olmsted OH), Coating solutions of trivalent chromium for coating zinc and cadmium surfaces.
  6. Suda Arata (Hiratsuka JPX) Ogina Takao (Hiratsuka JPX), Composition and method for chromating treatment of metal.
  7. Carlson Lawrence R. (Waterford MI), Composition and process for forming improved, non-cracking chromate conversion coatings.
  8. Bradley Johnny LaDell, Composition for forming a black, adherent coating on a metal substrate.
  9. Martyak Nicholas M., Deposition of chromium oxides from a trivalent chromium solution containing a complexing agent for a buffer.
  10. Roberto Oscar E. (Farmington Hills MI) Maxim Marc A. (Sterling Heights MI), Dual coated metal substrates and methods of making the same.
  11. Shinozaki Fumiaki (Shizuoka) Fujimori Junichi (Shizuoka JPX), Light-sensitive composition consisting essentially of, in admixture a nonionic aromatic diazo compound and a cationic dy.
  12. Miyoshi Tatsuya,JPX ; Kubota Takahiro,JPX ; Sagiyama Masaru,JPX ; Sugimoto Yoshiharu,JPX ; Yamashita Masaaki,JPX, Manufacturing process on chromate-coated lead-containing galvanized steel sheet with anti-black patina property and anti-white rust property.
  13. Deresh Ley (Waterbury CT), Method for producing chromate conversion coatings.
  14. Marzano Michael, Non-chrome conversion coating.
  15. Crotty David E. (Highland Park MI), Non-peroxide trivalent chromium passivate composition and process.
  16. Myers Ronald ; Mosser Mark F. ; Eddinger Kevin ; Hughes John E., Phosphate bonding composition.
  17. Higgins George (Windsor GB2), Process and composition for conversion coating metal surfaces.
  18. Kasahara Nobuyoshi (Sayama JPX) Nonumura Koutaro (Kunitachi JPX), Process for dyeing aluminum-containing zinc-based alloys.
  19. Maiquez Jose A. O. (Barcelona ESX), Process for sealing chromate conversion coatings on electrodeposited zinc.
  20. Brindisi ; Jr. Frank A. (Madison CT) Bleeks Thomas W. (New Haven CT) Sullivan Thomas E. (Hamden CT), Solution and method for selectively stripping alloys containing nickel with gold, phosphorous or chromium from stainless.
  21. Crotty David E. (Highland Park MI), Stabilized trivalent chromium passivate composition and process.
  22. Susa Hideo,JPX ; Yamamuro Masaaki,JPX ; Katori Mitsuomi,JPX, Treating solution and treating method for forming protective coating films on metals.
  23. Crotty, David E.; Lash, Ronald J., Trivalent chromium passivate composition and process.
  24. Lash Ronald J. (Rochester MI) Crotty David E. (Highland Park MI), Trivalent chromium passivate process.
  25. Da Fonte ; Jr. Bento (Mt. Clemens MI), Trivalent chromium passivate solution and process.
  26. Huvar Robert J. (Ann Arbor MI), Trivalent chromium passivate solution and process.
  27. Da Fonte ; Jr. Bento (Mt. Clemens MI), Trivalent chromium passivate solution and process for yellow passivate film.
  28. Pearlstein Fred (Philadelphia PA) Agarwala Vinod S. (Warminster PA), Trivalent chromium solutions for sealing anodized aluminum.
  29. Benderly Abraham (Houston TX) Bravo Audrey (Richardson TX), Use of iron salts as corrosion inhibitors in titanium vessels.

이 특허를 인용한 특허 (6)

  1. Yoshida, Hiroyuki; Mochizuki, Shinsuke; Hirayama, Hiroshi; Nagai, Toshiyasu; Nemichi, Yasutake; Sadohara, Daisuke; Shimoda, Katsumi; Nishikawa, Kenichi, Black coating film-forming vehicle component and/or fastening component, and manufacturing method thereof.
  2. Kendig, Martin William, Chromate-generating corrosion inhibitor.
  3. Hingley, Stacey; Tooth, Richard; Clarke, Terence, Color control of trivalent chromium deposits.
  4. Inoue, Manabu; Nakajima, Ryo; Watanabe, Kazuhiro; Watanabe, Kimitaka, Processing solution for forming hexavalent chromium free, black conversion film on zinc or zinc alloy plating layers, and method for forming hexavalent chromium free, black conversion film on zinc or zinc alloy plating layers.
  5. Schlosser, Ted M.; Musingo, Edward M., Trivalent chromium passivation and pretreatment composition and method for zinc-containing metals.
  6. Schlosser, Ted M.; Musingo, Edward M., Trivalent chromium passivation and pretreatment composition and method for zinc-containing metals.

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