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Method for preparing continuous regular lamellar microgroove based on lamellar eutectic alloy system

A eutectic alloy, lamellar technology, which is applied in the field of micro-scale microstructure preparation, can solve the problems of irregular lamellar structure, discontinuous microgrooves, complicated operation, etc., and achieves high dimensional control accuracy and regular morphology. , the effect of simple preparation process

Active Publication Date: 2015-08-19
深圳市脑潜能实业发展有限公司
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Problems solved by technology

The preparation process of this kind of groove involves many procedures, and the operation is more complicated. Due to the strict temperature control requirements related to heat treatment and high temperature pressurization, ...

Method used

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  • Method for preparing continuous regular lamellar microgroove based on lamellar eutectic alloy system
  • Method for preparing continuous regular lamellar microgroove based on lamellar eutectic alloy system

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Embodiment

[0031] a.Ni powder (purity is 99.9%) and Si powder (purity is 99.9%) are uniformly mixed according to the proportion of Ni-12% Si by mass fraction, pressed into consumable electrode, repeated in vacuum consumable electric arc furnace Melting 4 times to obtain a Ni-Si eutectic master alloy ingot with uniform composition.

[0032] b. Cut the obtained eutectic master alloy ingot into cylindrical alloy rods of Ф7.2×100 mm with a wire cutting machine, grind the rods with No. 180 sandpaper to remove scale, and clean them with ethanol.

[0033] c. Place the polished rod in the corundum tube of the high-temperature gradient directional solidification furnace for induction heating. The corundum tube with an inner diameter of Φ7 is used, the heating temperature is 1300°C, the cooling liquid is a liquid metal Ga-In-Sn alloy, and the pumping is set. The pulling rate was 40μm / s, and a two-phase Ni-Ni3Si eutectic alloy with regular lamellar shape was obtained.

[0034] d. Cut the direction...

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Abstract

The invention relates to a method for preparing a continuous regular lamellar microgroove based on a lamellar eutectic alloy system. According to the method, directional solidification technology and selective corrosion technology are combined together; the lamellar eutectic alloy system is used as a base; and lamellar eutectic alloy is prepared by using the directional solidification technology at first, then according to different electrode potentials of composition phases of the eutectic, one of the composition phases is selectively eroded in an appropriate electrolyte, so a continuous regular lamellar single-phase microgroove structure is formed. The preparation process of the method is simple, convenient and controllable; the prepared microgroove is continuous and has more regular morphology, the depth and width of the microgroove are adjustable by adjusting a drawing rate and erosion time, the dimension control accuracy of the microgroove is higher, and the microgroove can be used as a template for preparation of microgroove structures of other metal elements or alloy through a template process; and combination of the directional solidification technology and the selective corrosion technology provides a novel method and thinking for preparation of microgrooves.

Description

technical field [0001] The invention belongs to the technical field of preparation of micron-scale microstructures, and relates to a process method for preparing a microgroove template based on a lamellar eutectic alloy system, in particular to a method for preparing a continuous regular lamellar microgroove template based on a lamellar eutectic alloy system. slot method. Background technique [0002] One-dimensional micro / nanostructured metals have high surface area ratio, good electrical and thermal conductivity, outstanding mechanical stability and other properties, making micro / nanostructured metals widely used in miniaturization of heat exchangers and chemical reactors, catalysts, sensors , fuel cells, biological filtration and water purification, gas phase separation, micro-flow control and other fields. There are also many techniques for preparing one-dimensional micro / nanostructured metals. The template method is the most commonly used method. The template method is...

Claims

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Application Information

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IPC IPC(8): C30B11/00C30B29/52C25F3/02
Inventor 赵志龙韦路锋刘树磊高建军王少毅崔凯李宁
Owner 深圳市脑潜能实业发展有限公司
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