Abstract
This paper presents selected characteristics of the metallic porous materials produced by the sintering of metal powders. The authors focus on materials produced from the iron powder (Fe) of ASC 100.29 and Distaloy SE. ASC 100.29 is formed by atomization and has a characteristic morphology. It consists of spherical particles of different sizes forming agglomerates. Distaloy SE is also based on the sponge-iron. The porous material is prepared using the patented method of sintering the mixture of iron powder ASC 100.29, Fe(III) oxide, Distaloy SE and Fe(III) oxide in the reducing atmosphere of dissociated ammonia. As a result, the materials with open pores of micrometer sizes are obtained. The pores are formed between iron particles bonded by diffusion bridges. The modelling of porous materials containing diffusion bridges that allows for three-dimensional (3D) imaging is presented.
Highlights
The metallic porous materials are a relatively new class of engineering materials, which have been widely researched due to their innovative properties
The increase in interest in porous materials is caused by the fact that a porous structure is present in living organisms, for example in the morphology of wood or human bone
It is caused by a different creation and the result of the porous metal foam from ASC 100.29 showed a porosity of 62% with bulk density
Summary
The metallic porous materials are a relatively new class of engineering materials, which have been widely researched due to their innovative properties. The porous structure is characterized by an unusual combination of two properties: high stiffness and minimum weight [1,4]. Porous open-cell materials based on various metals and alloys are of increasing interest as they combine structural and functional properties [1,3]. Open-celled metallic foams with their specific structural properties are attractive candidates for a wide range of applications in the field of catalyst supports, process, and energy technologies [1,3,5]. Attempts to obtain a porous structure were based on the knowledge of foaming polymers, where the blown gas was used as a foaming agent [1,2,3]
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