Process for preparing invor alloy foil

An invar and metal technology, applied in the field of preparing Invar alloy foil, can solve the problems of unstable electrolyte performance, high hardness of electrodeposited layer, large concentration of metal ions, etc., achieves smooth and bright appearance, improves brightness, Excellent magnetic properties

Inactive Publication Date: 2006-06-28
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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Problems solved by technology

[0004] In the prior art, ("Surface Technology" in the 25th period of 2000 "The Thermal Expansion Research of Electroplated Nickel and Iron-Nickel Alloy Thin Film" Liu Xiaowei) and (Michel L, Trudean.Nanocrystalline Fe and Fe-RichedFe-Ni Through Electrodeposition.Nanostructured Materials, 1999, 12: 55-60) all disclose the method for preparing Invar alloy by elec...

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  • Process for preparing invor alloy foil
  • Process for preparing invor alloy foil
  • Process for preparing invor alloy foil

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Embodiment

[0033] Three batches of Invar alloy foils were prepared by using the electrodeposition method described in the present invention. The specific chemical compositions of the three batches of Invar alloys are shown in Table 1.

[0034] The electrolyte is a sulfate system with a low metal salt concentration, and buffers, complexing agents, brighteners, and auxiliary rare earth cerium chlorides are added at the same time. The chemical composition of the three batches of electrolytes is shown in Table 2.

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Abstract

The invention relates to a Invar alloy foil manufacturing method. It belongs to precious alloy field. The Invar alloy is Fe-Ni alloy with 35-37% (wt%) nickel. The manufacturing method is electro deposition. Electrolyte is sulfate system with low metal salt density. Buffer, complexing agent, brightener, auxiliary, and 304 stainless steel, Ir2; the distance of cathode and anode is 10-30mm; the electro deposition time is 5-50min. and it includes the following steps: putting cathode in electroplating solution; electrifying direct current for curtain time; depositing Invar alloy on the cathode; taking it out; cleaning; drying; peeling off the formed Fe-Ni alloy layer to form Invar alloy foil.

Description

technical field [0001] The invention belongs to the field of precision alloys, that is, the field of functional materials, and relates to a preparation method of Invar alloy foil. Background technique [0002] Invar alloy is an iron-nickel alloy with a nickel content of 35-37% (wt%). Due to its good magnetic properties, good flexibility and compact structure, it has been widely used in precision instruments, optical instruments and electronic equipment. components. [0003] There are many methods for preparing Invar alloy, such as cold plastic deformation, sputtering film formation, melting casting, twin-roll ultra-quick cooling method, etc. However, compared with the above preparation techniques, the electrodeposition method has the following advantages: the electrodeposition layer has a unique high density and low porosity; it is easy to control the chemical composition of the material by changing parameters, electrolyte composition and other conditions in the process; it...

Claims

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Application Information

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IPC IPC(8): C25D1/04C25D3/56
Inventor 卢燕平李鹏韩伟刘天成孙克李德仁卢志超周少雄
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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