1. Introduction

Sintered metal porous material combines structural and porous material properties to provide a new type of structural functional material. A commonly used stiff filter media is sintered metal porous material and the filter material formed of this substance. This type of material is formed of pre-processed spherical or irregular metal powder that has been pressed and sintered so that the metal particles can both fuse together and maintain countless small spaces from the surface to the inside, longitudinal and transverse, through each other. Sintered metal porous material has excellent permeability, high filtration accuracy, large specific area, effective energy absorption and transmission, low relative density, high specific strength, better machinability, high temperature resistance, corrosion resistance, sound insulation, heat insulation, and other advantages.

2. The procedure for preparation

The following stages are commonly involved in the preparation of sintered metal porous materials:

(1) Porous sintered metal structural design. (2) Preparation of raw materials for sintered metal porous materials (weaving of high-precision wire mesh, cluster drawing of metal fibers, preparation of high-grade metal powder). The raw materials for the fabrication of metal porous materials must have good geometric qualities, that is, metal fiber raw materials must have a consistent wire diameter and length; metal powder raw materials must have a very similar geometric shape size. (3) The sintered composite preparation process for metal porous materials, which covers the design of metal microporous structures. (4) Sintered metal porous material filtration component molding, which is followed by filter material welding molding.

3. Prospects for Development

Sintered metal porous materials offer a wide range of application prospects in various sectors, including aviation, aerospace, chemical industry, building materials, metallurgy, atomic energy, petrochemical, machinery, medical, and environmental protection. With the growth of modern industry, it shows the scene of strong functionality, wide application, new variations arise regularly, and the use of space is growing, and its materials, preparation methods, material structure design, and other elements have grown greatly. Metal porous materials are gaining attention and becoming an integral aspect of the field of materials science due to their unique qualities, and are evolving toward high performance, high precision, high efficiency, long life, multi-function, orderly, gradient, microfabrication, and low cost.

4. Metal powder

Titanium, stainless steel, bronze, nickel and nickel alloys, and other metals are frequently used in sintered metal porous materials.

Some of the metal powder physical drawings and electron microscope diagrams are displayed here (Tianjiu Metal Materials Co., Ltd.).

(1)

 

No. TA1 titanium powder

Features: high strength, low density, great corrosion resistance and toughness, good plasticity, and high-temperature mechanical stability

Uses: Aviation and maritime, spraying, oil, additive manufacturing, and other industries are examples.

(2)

 

No.17-4PH stainless steel powder

Features: Excellent weldability, high strength, toughness, and corrosion resistance.

Uses: 3D printing, shaft manufacture, metal injection molding, and so on.