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Stainless steel based metal fiber porous material with high specific surface area and preparation method thereof

A technology of high specific surface area and porous materials, which is applied in the field of preparation of stainless steel-based metal fiber porous materials, can solve the problems of inapplicability of high specific surface SMFM and damage to fiber surface microstructure, etc., and achieve good mechanical properties, high specific surface area, high The effect of surface energy

Active Publication Date: 2014-02-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low-temperature sintering of stainless steel materials can be achieved and SMFM materials with excellent mechanical strength properties can be obtained. However, the liquid phase sintering process used will seriously damage the microstructure of the fiber surface, which is not suitable for the preparation of high-specification SMFM.

Method used

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  • Stainless steel based metal fiber porous material with high specific surface area and preparation method thereof
  • Stainless steel based metal fiber porous material with high specific surface area and preparation method thereof
  • Stainless steel based metal fiber porous material with high specific surface area and preparation method thereof

Examples

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Effect test

Embodiment 1

[0028] The first step is to process stainless steel fibers. The Φ60×400mm long stainless steel rod is clamped on the CM6140 lathe, and the rough part of the surface of the stainless steel rod is firstly cut off with an ordinary cylindrical turning tool. Secondly, use a multi-tooth tool with a large blade inclination to turn stainless steel fibers. The tool structure is as follows figure 1 Shown (see patent No. 200610124078.x Figure 4 and the introduction in the embodiment), the tool material is high-speed steel, and the main cutting edge composed of a plurality of S-shaped small teeth is processed by wire cutting, the tooth pitch m=0.3mm, and the tooth height h=0.2mm. The process of making stainless steel fiber by using the multi-tooth tool with large blade inclination angle is as follows: install the tool on the tool holder, the tool installation angle is 45°, and adjust the tool height. The cutting parameters are as follows: feed rate f=0.1mm / r, back cutting amount a p =...

Embodiment 2

[0034]The first step is to process stainless steel fibers. The Φ60×400mm long stainless steel rod is clamped on the CM6140 lathe, and the rough part of the surface of the stainless steel rod is firstly cut off with an ordinary cylindrical turning tool. Secondly, use a multi-tooth tool with a large blade inclination to turn stainless steel fibers. The tool structure is as follows figure 1 As shown, the tool material is high-speed steel, and the main cutting edge composed of multiple small teeth is processed by wire cutting, the tooth pitch m=0.3mm, and the tooth height h=0.2mm. Such as figure 2 The process of manufacturing stainless steel fiber with the multi-tooth cutter shown is as follows: install the cutter on the cutter holder, the installation angle of the cutter is 45°, and adjust the height of the cutter. The cutting parameters are as follows: feed rate f=0.1mm / r, back cutting amount a p =0.2mm, cutting speed v=13.19m / min, cutting condition is dry cutting. The cont...

Embodiment 3

[0040] The first step is to process stainless steel fibers. The Φ60×400mm long stainless steel rod is clamped on the CM6140 lathe, and the rough part of the surface of the stainless steel rod is firstly cut off with an ordinary cylindrical turning tool. Secondly, use a multi-tooth tool with a large blade inclination to turn stainless steel fibers. The tool structure is as follows figure 1 As shown, the tool material is high-speed steel, and the main cutting edge composed of multiple small teeth is processed by wire cutting, the tooth pitch m=0.3mm, and the tooth height h=0.2mm. Such as figure 2 The process of manufacturing stainless steel fiber with the multi-tooth cutter shown is as follows: install the cutter on the cutter holder, the installation angle of the cutter is 45°, and adjust the height of the cutter. The cutting parameters are as follows: feed rate f = 0.15mm / r, back cutting amount a p =0.1mm, cutting speed v=13.19m / min, cutting condition is dry cutting. The ...

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Abstract

The invention discloses a stainless steel based metal fiber porous material with high specific surface area and a preparation method thereof. The preparation method comprises the following steps of: firstly machining continuous stainless steel fiber on a stainless steel bar material by a large-blade inclination-angle multi-tooth cutting tool; after pretreatments including washing, deoiling and acid washing are carried out on a stainless steel fiber, plating the surface of the stainless steel bar material with a chemical copper plating method to obtain a copper plating layer with a structure of abundant surface copper micro-particles; and after the stainless steel fiber with plated copper is molded and preformed, placing the stainless steel fiber in a reducing atmosphere protective furnace to carry out the low-temperature solid-phase sintering for 30-90mins at 850-950 DEG C, and then cooling along the furnace to prepare the stainless steel based metal fiber porous material with the high specific surface area. The BET(Brunauer Emmett Teller) specific surface area of the stainless steel based metal fiber porous material can be up to more than 0.2m<2> / g, and the shearing force thereof is more than twice of that of a sintering copper fiber porous material under the same test conditions.

Description

technical field [0001] The invention relates to a metal fiber porous material, in particular to a preparation method of a stainless steel-based metal fiber porous material with a high specific surface area. Background technique [0002] Porous metal materials have a three-dimensional pore structure inside and retain the properties of metal materials, thus becoming a new type of engineering material that combines the characteristics of structural materials and functional materials. As an important branch of porous metal materials, metal fiber porous materials (SMFM) have the characteristics of high mechanical strength, large specific surface area, high porosity and low production cost. It has been widely used in medical materials, fuel cells, porous metal electrodes and other fields. With the continuous expansion of SMFM application fields, its requirements are no longer limited to mechanical and physical properties. The study found that the specific surface area of ​​SMFM ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/11C23C18/40
Inventor 汤勇唐彪丁鑫锐周蕤刘彬
Owner SOUTH CHINA UNIV OF TECH
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