Method for preparing iron aluminum intermetallic compound homogenizing cellular material by utilizing powder raw materials

Abstract

The invention relates to a method for preparing an iron aluminum intermetallic compound homogenizing cellular material by utilizing powder raw materials. The method is directly used for producing cellular materials based on iron aluminum intermetallic compound or filter elements. The method of the invention comprises the following steps: evenly mixing 86-41% of iron powder and 14-59% of aluminum powder by weight, wherein the powder granularity is less than 500 mu m; adopting isostatic pressing or die forming; and sintering under antioxidant protective atmosphere or vacuum, wherein the key of the method lies in carrying out heating pretreatment on the mixed powder of iron and aluminum before forming; and the technological condition of the pretreatment working procedure is that the mixed powder of iron and aluminum is heated to 400-950 DEG C under antioxidant protective atmosphere or vacuum, is naturally cooled, smashed and ground, and then is sintered.

Description

technical field [0001] The method relates to a method for making homogeneous porous materials of iron-aluminum intermetallic compounds by using powdery raw materials. It is an improvement on the prior art. technical background [0002] The method of preparing iron-aluminum alloy porous materials is a topic of much concern at present. Especially with the current high-speed development of modern industry, energy waste and environmental pollution are becoming more and more serious. A large amount of dusty high-temperature gas, coal gas, gas, and flue gas, has become a threat to human survival. High-pollution industries, such as iron and steel, thermal power, and various furnaces, form the main source of pollution. The traditional process and equipment used in the purification, filtration and dust removal process or system of pollution control, due to the limitation of material characteristics, can no longer meet the situation requirements of energy saving and consumption red...

AI Technical Summary

Problems solved by technology

In the late 1990s, in view of the problems of poor thermal shock resistance and low reliability of ceramic filter materials, some western countries carried out research and development of porous filter materials with metallic properties.

Even so, the stability of product quality cannot be completely solved

Increased production costs, forming the biggest quality and price barriers in popularization and application

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