According to foreign media reports, the research team at the Max Planck Institute for Sustainable Materials (MPI-SusMat) has developed a new production method for low-thermal expansion alloys (also known as Invar alloys) that neither emits carbon dioxide and saves a lot of energy.
The researchers achieved this goal with a one-step process, integrating metal extraction, alloying, and thermomechanical processing into a single reactor and process step.
This method breaks down some traditional boundaries between extractive metallurgy and physical metallurgy, inspiring people to directly convert oxides into valuable products through a single solid-state operation.
Relevant research results were published in the journal Nature.
, (Photo source: nature.
com) To reduce energy consumption and CO2 emissions through one-step metallurgy, the traditional alloy production process is usually divided into three steps: first, the ore is reduced to a metallic form, then liquefied elements are mixed to make the alloy, and finally thermal mechanical treatment is performed to achieve the desired properties.
Each step requires a large amount of energy and relies on carbon as an energy carrier and reductant, resulting in a large amount of CO2 emissions.
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