This technology relates to heat-resistant steel powders for powder metallurgy that have high-temperature oxidation resistance and heat resistance and can withstand temperatures above 1,000°C while minimizing the content of expensive Co, and sintered bodies for high-temperature parts using the powders. In particular, it is a technology designed to increase performance, durability, stability, and applicability based on core materials, structures, processes, or device configurations related to high-temperature Fe-based alloy powders and sintered bodies using them.
It is intended to solve the problem of deterioration of internal combustion engine turbocharger component parts at low service temperature and high temperature, leading to poor component reliability. Accordingly, this technology applies Fe system alloy powder for high temperature parts containing specific weight percentages of elements such as Cr, Ni, Si, Al, Nb, C, Mo, Co and N as a key means, has high temperature oxidation resistance and heat resistance, and can maintain temperatures above 1,000°C while minimizing the expensive Co content. We propose a technological concept for implementing heat-resistant steel powder for powder metallurgy and sintered body for high-temperature parts using the powder.
Accordingly, the present invention can be expected to improve oxidation resistance at high temperature and heat resistance while reducing the expensive Co content of internal combustion engine turbocharger components, and can also increase reproducibility, scalability, and process suitability in actual use environments. In addition, it can be used as a high-performance material, device, battery, sensor, device, or manufacturing process in related industries, making it advantageous in terms of subsequent commercialization and demonstration.
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