Method for preparing Fe-Ni, Fi-Ni-Cr alloy foil

Abstract

The present invention relates to the field of electrolysis process for depositing metal, and features that Fe-Ni or Fe-Ni-Cr alloy foil is produced through electrolytic deposition in a water solution system of sulfate and chloride or sulfate, chloride and trivalent chromium. The electrolytic production process of alloy foil has short flow path, stable electrolyte, easy maintenance, simple waste water treatment, easy control of foil components and thickness, low cost and other advantages. The alloy foil has its physical and chemical performance, especially magnetic performance, higher than that produced through rolling process, and the produced Fe-Ni and Fe-Ni-Cr alloy foil may be used in electronic, telecom and electric industry as excellent soft magnetic material, cell skeleton material and packing material.

Description

Technical field:

[0001] The technology of the invention relates to the field of electrolytic metal deposition, in particular to electrolytic deposition in a sulfate-chloride or sulfate-chloride-trivalent chromium aqueous solution system to produce iron-nickel or iron-nickel-chromium alloy foil. Background technique:

[0002] At present, the iron-nickel alloy foil produced in China is made by melting, pouring into alloy and then rolling repeatedly. The process is relatively complicated, the yield is low, the cost is high, and the width and thickness are limited, and the product performance is also affected; "Research on Electrocast Iron and Iron Alloy Foil" was published in "Material Protection" 1990, 23(7): 12-15, which reported the use of full chloride system electrocast iron and iron-nickel alloy foil. The disadvantage of this system is its corrosion resistance. Strong, high temperature, poor operating environment, the foil width is only 200mm; and the report of electrodep...