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1.发明授权Method for electrodepositing of alloy film of a given composition from a given solution 失效一种生成溶液中组合物的合金膜电沉积的方法
公开(公告)号：US3716464A
公开(公告)日：1973-02-13
申请号：US3716464D
申请日：1969-12-30
Applicant: IBM
CPC classification number: C25D3/562 , C25D5/18 , C25D15/02 , C25D21/12 , Y10S204/09
Abstract: The effect of superimposing a sinusoidal alternating current on a direct current during electrodeposition of Ni-Fe alloys is disclosed in terms of the following factors: (a) maintaining the pH at the electrode equal to that of the bulk electrolyte; (b) ionic diffusion processes; and (c) chemical processes in solution prior to electrochemical reduction. The effect of frequency, amplitude and the rate of a-c current to d-c current on the composition of electrodeposited alloy are given for acid solutions of different pH and for alkaline solutions of metallic complexes with a variable concentration of complexing agent. It is shown that by proper choice of conditions, electrodeposited Fe-Ni alloys can be prepared with a desired uniform composition throughout their thickness. In the practice of this disclosure, alternating current is superimposed on direct current to prevent the pH in the layer of solution adjacent to the electrode from increasing and thus influence the electrodeposition of iron group metals or alloys of any metals which readily form hydroxide. Formation of hydroxides is thus prevented and their inclusion into deposited film is precluded. Additionally, the a-c current beneficially affects the rate of deposition of a metal which is controlled by diffusion. There is no concentration gradient of composition across the thickness of a film of Ni-Fe deposited by practice of this disclosure. Illustratively, Ni and Fe plate out at the same rate for thickness of film approximately in the range of 300A. to 4,000A. By control of the density of the d-c current, and the amplitude and frequency of the a-c current, Ni-Fe film of any given composition approximately in the range of 6 to 60 percent Fe is electroplated from the same solution.
Abstract translation: 根据以下因素公开了在Ni-Fe合金的电沉积期间叠加正弦交流电流对直流电的影响：（a）保持电极上的pH等于体电解质的pH; （b）离子扩散过程; 和（c）在电化学还原之前的溶液中的化学过程。 给出了电沉积合金组成的频率，幅度和a-c电流对d-c电流的影响对不同pH的酸溶液和具有不同浓度络合剂的金属络合物的碱溶液的影响。 显示出通过适当选择条件，可以在其厚度上制备具有所需均匀组成的电沉积Fe-Ni合金。
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公开(公告)号：BE767624A
公开(公告)日：1971-10-18
申请号：BE767624
申请日：1971-05-25
Applicant: IBM
Inventor： CHAUDHARI P , FREEDMAN J F , KOVAC Z
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Patent Agency Ranking
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公开(公告)号：SE347294B
公开(公告)日：1972-07-31
申请号：SE41068
申请日：1968-01-12
Applicant: IBM
Abstract: 1,176,124. Coating with metals. INTERNATIONAL BUSINESS MACHINES CORP. Jan.8, 1968 [Jan.13, 1967], No.1038/68. Heading C7F. In the electroless deposition of a metal coating on a polymer, the surface is coated with a constituent monomer of the polymer, the monomer polymerized, and coated with a reducible metal salt, the monomer acting as a reducing agent for the metal salt. In an example a urea formaldehyde substrate is soaked in nitric acid, rinsed, dipped in formaldehyde, dried to polymerize the coating, and then the coatings is depolymerized in the presence of a metal salt which may be palladium, gold or nickel chloride or nickel, cobalt. or copper sulphate. The metal salt is reduced during this process. The substrate is then coated with Ni, Co, Cu, Pd or Ni-Fe, Ni-Co, or Ni-W-P alloys. Examples of both alkali and acid electroless nickel plating baths are desinked. The coating may be subsequently electro-plated.
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