The industry has increasingly higher demands on the metals used, so scientists are looking, on the one hand, for methods to increase their strength and, on the other hand, to reduce their weight.
Researchers from the AGH University of Science and Technology in Kraków are working on gas gases, i.e. metals reinforced with gas, specifically hydrogen. These materials, produced in very complicated conditions, are super light, but at the same time have the ability to absorb energy, damp vibrations and acoustic waves, on the one hand conduct heat well, and on the other hand can also constitute a barrier to thermal diffusion; they can also tolerate higher temperatures depending on the base metal they are made of. The space industry is interested in such solutions, including for building rocket engines.
“Gazars are a new group of materials that connect things that seem impossible to combine, namely metal and gas. In our case, it is a metal with hydrogen. These are materials that contain up to 70 percent. volumes of hydrogen, produced under very difficult, complex conditions. They are super light but have an unbelievable set of material characteristics. They perfectly absorb sounds, energy, transfer higher temperatures very well, if they are based on ceramics, and also perform very well where mass is a key value” – said Prof. dr hab. Eng. Jerzy Sobczak from the Foundry Department of the AGH University of Science and Technology in Krakow.
Gasars, or porous metal materials, could revolutionize a number of industries. They allow to increase the strength of elements while reducing weight, which is a desirable feature, for example, in the space, defense and automotive industries.