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Amorphous fibre end portion composite electroplate micro-jointing method

A composite electroplating and micro-connection technology, which is applied in jewelry and other fields, can solve the problems of poor micro-connection performance of amorphous fibers, and achieve the effects of easy control of coating thickness, low resistivity, and high thermal conductivity

Active Publication Date: 2012-06-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor micro-connection performance of the existing amorphous fiber, and propose a composite electroplating micro-connection method at the end of the amorphous fiber

Method used

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  • Amorphous fibre end portion composite electroplate micro-jointing method
  • Amorphous fibre end portion composite electroplate micro-jointing method
  • Amorphous fibre end portion composite electroplate micro-jointing method

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specific Embodiment approach 1

[0017] Specific Embodiment 1: A micro-connection method of composite electroplating at the end of an amorphous fiber according to this embodiment is carried out in accordance with the following steps: 1. The pre-plating treatment stage: wash the amorphous fiber with water for 1 to 2 times, and then use acetone or no Water and ethanol carry out surface cleaning and degreasing to the amorphous fiber after washing, and stand-by; 2. Electrolytic polishing treatment: a, get pure Pb block as anode, pure Ni block as cathode, place in electrolyte, at DC voltage 12V, The anode current density is 30~40A / dm 2 , under the condition that the electrolyte temperature is 35℃~45℃, electrolytic polishing is performed for 580~620s; b. Take a pure Pb block as an anode, and a pure Cu block as a cathode, put them in the electrolyte, and at a DC voltage of 1.7~2.0V, the anode The current density is 6~8A / dm 2 , the temperature of the electrolyte is at room temperature, and the electrolytic polishing...

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 1 in that: the diameter of the amorphous fiber described in step 1 is 10-90 μm, and the end of the amorphous fiber is plated with a length of 4 mm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Specific embodiment three: the difference between this embodiment and specific embodiments one to two is that the electrolyte solution described in step two a is composed of concentrated sulfuric acid with a mass percentage content of 98% and pure water in a ratio of 4:3 by volume consist of. Others are the same as the specific embodiment 1 to 2.

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Abstract

An amorphous fibre end portion composite electroplate micro-jointing method relates to electroplate micro-jointing method. The invention aims to solve a problem of weak connectivity of an existing amorphous fiber. The electroplate connection method of the present invention comprises steps of: 1. carrying out surface cleaning on amorphous fiber and carrying out electrolytic polishing treatment; 2. plating Ni; 3. plating Cu; 4. carrying out chemical passivation treatment. Compared with existing special treatment technologies of chemical plating (CP) and vapor deposition (VD), the plating method has advantages of simple equipment process, strong operationality, high efficiency and easily controlled coating thickness; meanwhile, a composite plating transitional Ni / Cu layer micro-jointing is easy for mutual coupling of thermal expansion coefficients between solder and amorphous fiber under changing temperature conditions, so as to obtain stable and reliable connection between a sensitive material and an electronic circuit. The method of the invention can be applied to the field of amorphous fiber connection.

Description

technical field [0001] The present invention relates to an electroplating micro-connection method. Background technique [0002] The microstructure of amorphous fiber is long-range disorder and short-range order, and it has good geometric symmetry, small hysteresis loss and coercive force, negative or near zero magnetostriction coefficient, high magnetic permeability, special Magnetic domain structure and skin effect (Skin Effect) and other characteristics, especially the significant giant magneto-impedance effect (giant magneto-impedance, GMI) at higher frequencies are significantly better than amorphous thin strips, magnetic films and electrodeposited composite fibers, etc. Other types of materials, so amorphous fibers are more suitable as new sensitive materials for GMI magnetic sensors (see V.Zhukova, M.Ipatov, A.Zhukov.Thin Magnetically Soft Wires for Magnetic Microsensors.Sensors.2009, 9:9216-9240 .). The micro-connection of amorphous fibers is one of the technical b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/12C25D7/00C25D5/34C25D5/48
Inventor 孙剑飞刘景顺邢大伟曹福洋
Owner HARBIN INST OF TECH
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