In this study, the corrosion behavior of Co-Cr-Fe-Ni-Mo high-entropy alloys additively manufactured via direct energy deposition was investigated according to the compositional trade-off between Cr and Mo elements. Two distinct alloy compositions were fabricated by adjusting the feeding rate of two powders with different chemical compositions through a dual nozzle. Electrochemical testing in a 3.5 wt% NaCl solution revealed that the Cr-rich and Mo-lean alloy exhibited inferior corrosion resistance compared to the Cr-lean and Mo-rich alloy. Specifically, the corrosion potential of the Cr-rich and Mo-lean alloy shifted negatively by approximately 200 mV compared to the Cr-lean and Mo-rich alloy, accompanied by an increase in corrosion current density and the pronounced initiation of localized pitting. This deterioration is attributed to a lack of passivation caused by the small amount of Mo in the Cr-rich and Mo-lean alloy. The passive film of the Cr-lean and Mo-rich alloy was more robust, characterized by a higher concentration of Mo, which effectively inhibited pit propagation through repassivation. These findings demonstrate that maintaining a critical Cr-Mo balance is more vital for the electrochemical stability of additively manufactured high-entropy alloys than unilateral Cr enrichment.

서 론
자료 및 방법
    분석자료 및 범위
    인명피해 발생 선박당 피해규모 분석
    상대적 인명피해 집중도 분석
결과 및 고찰
    일반어선과 낚시어선의 사고 및 인명피해 현황
    사고유형별 사망·실종 발생 선박당 피해규모
    사고유형별 부상 발생 선박당 피해규모
    사고유형별 인명피해의 상대적 집중 특성
결 론
사 사
References

• Jeongmin Lee(Division of Advanced Materials Engineering, Kongju National University, Cheonan 31080, Republic of Korea)
• Yeonghwan Song(Division of Advanced Materials Engineering, Kongju National University, Cheonan 31080, Republic of Korea)
• Sung-Jae Jo(Division of Advanced Materials Engineering, Kongju National University, Cheonan 31080, Republic of Korea)
• Minho Shin(Division of Advanced Materials Engineering, Kongju National University, Cheonan 31080, Republic of Korea)
• Soon-Jik Hong(Division of Advanced Materials Engineering, Kongju National University, Cheonan 31080, Republic of Korea, Center for Advanced Powder Materials and Parts of Powder (CAMP2), Kongju National University, Cheonan 31080, Republic of Korea)
• Jae Hyuk Lee(Department of Materials Science and Engineering, Dankook University, Cheonan 31116, Republic of Korea)
• Hyunbin Lim(Department of Materials Science and Engineering, Dankook University, Cheonan 31116, Republic of Korea)
• Soo-Hyun Joo(Department of Materials Science and Engineering, Dankook University, Cheonan 31116, Republic of Korea) Corresponding author