CoCrW와 CoCrMo 합금의 고온 트라이볼로지적 특성 평가
High-temperature Tribological Properties of CoCrW and CoCrMo Alloys
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As global demand for environmental protection rises, efforts are underway across various fields to reduce pollutant emissions. One area of focus is to enhance engine efficiency by minimizing friction and wear in marine engines that utilize eco-friendly fuels. Friction and wear significantly affect energy efficiency and durability, highlighting the need for a systematic understanding of the tribological characteristics of marine engine components and materials. This study investigates the friction and wear properties of CoCr-based alloys in high-temperature environments. Experiments are conducted using a pin-on-disk tribo-tester at temperatures ranging from 250°C to 450°C. The results indicate that the friction and wear characteristics of CoCrWand CoCrMo, when tested against NiCr, generally increase with temperature. Notably, although the friction coefficients of CoCrW and CoCrMo are relatively similar, CoCrMo exhibits significantly better wear resistance. Abrasive and adhesive wear are identified as the primary wear mechanisms, with the degree of tribo-film formation playing a critical role in wear progression. These findings offer valuable insights into the tribological properties of CoCr-based alloys and are expected to provide foundational data for the design of efficient and durable components in high-temperature environments.
Abstract
As global demand for environmental protection rises, efforts are underway across various fields to reduce pollutant emissions. One area of focus is to enhance engine efficiency by minimizing friction and wear in marine engines that utilize eco-friendly fuels. Friction and wear significantly affect energy efficiency and durability, highlighting the need for a systematic understanding of the tribological characteristics of marine engine components and materials. This study investigates the friction and wear properties of CoCr-based alloys in high-temperature environments. Experiments are conducted using a pin-on-disk tribo-tester at temperatures ranging from 250°C to 450°C. The results indicate that the friction and wear characteristics of CoCrWand CoCrMo, when tested against NiCr, generally increase with temperature. Notably, although the friction coefficients of CoCrW and CoCrMo are relatively similar, CoCrMo exhibits significantly better wear resistance. Abrasive and adhesive wear are identified as the primary wear mechanisms, with the degree of tribo-film formation playing a critical role in wear progression. These findings offer valuable insights into the tribological properties of CoCr-based alloys and are expected to provide foundational data for the design of efficient and durable components in high-temperature environments.
참고문헌 (18)
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