Trivalent chromium electrolyte and process employing reducing agents
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C25D-003/06
출원번호
US-0492302
(1983-05-12)
발명자
/ 주소
Tomaszewski Thaddeus W. (Troy MI)
출원인 / 주소
OMI International Corporation (Warren MI 02)
인용정보
피인용 횟수 :
13인용 특허 :
1
초록▼
An aqueous acidic trivalent chromium electrolyte and process for electrodepositing chromium platings comprising an electrolyte containing trivalent chromium ions, a complexing agent, halide ions, ammonium ions and a reducing agent comprising an ion selected from the group consisting of scandium, ytt
An aqueous acidic trivalent chromium electrolyte and process for electrodepositing chromium platings comprising an electrolyte containing trivalent chromium ions, a complexing agent, halide ions, ammonium ions and a reducing agent comprising an ion selected from the group consisting of scandium, yttrium, lanthanum, titanium, zirconium, hafnium, molybdenum, arsenic, selenium, tellurium, cerium, uranium, and tin present in an amount effective to maintain the concentration of hexavalent chromium ions formed in the bath at a level at which satisfactory chromium electrodeposits are obtained.
대표청구항▼
An aqueous acidic trivalent chromium electrolyte containing trivalent chromium ions, a complexing agent for maintaining the trivalent chromium ions in solution, halide ions, ammonium ions, hydrogen ions to provide a pH on the acid side, and a reducing agent comprising an ion selected from the group
An aqueous acidic trivalent chromium electrolyte containing trivalent chromium ions, a complexing agent for maintaining the trivalent chromium ions in solution, halide ions, ammonium ions, hydrogen ions to provide a pH on the acid side, and a reducing agent comprising an ion selected from the group consisting of scandium, yttrium, lanthanum, titanium, hafnium, arsenic, selenium, tellurium, cerium, uranium, and mixtures thereof present in an amount effective to maintain the concentration of hexavalent chromium ions at a level at which satisfactory chromium electrodeposits are obtained.
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이 특허에 인용된 특허 (1)
Gyllenspetz Jeffrey (Knaresborough EN) Renton Stanley (Penkridge EN), Compositions for use in chromium plating.
Burba, III, John L.; Hassler, Carl R.; O'Kelley, C. Brock; Lupo, Joseph A.; Pascoe, Joseph R., Apparatus for treating a flow of an aqueous solution containing arsenic.
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