열처리된 금형강 표면의 내소착성 향상을 위한초음파나노표면개질 처리에 관한 연구 (Effect of Ultrasonic Nanocrystal Surface Modification to Improve Anti-adhesion to Aluminum for Heat-treated SKD11)

서지정보

· 발행기관 : 한국기계가공학회
· 수록지 정보 : 한국기계가공학회지 / 23권 / 4호 / 1 ~ 8페이지
· 저자명 : 하형진, 황선아, 정태형, 심도식

초록

Ultrasonic nanocrystal surface modification (UNSM) is used to improve the surface roughness and hardness andenhance the wear resistance of the material. The purpose of this study is to determine the adhesion properties of thesurfaces of UNSM-treated steel to aluminum. To characterize the adhesion between the UNSM-treated surface andthe aluminum, a wear test was conducted using the pin-on-disc method. Consequently, abrasive wear was evident inthe UNSM-treated specimen and tested aluminum fin. However, on the aluminum pin surface worn against thenon-UNSMed specimen, traces of the material being torn off were observed along with abrasive wear, indicating thatsome of the material of the aluminum pin was fused to the non-UNSMed surface during wear testing. EPMArevealed that a large amount of aluminum was present on the worn surface of the non-UNSMed specimen. However,only an extremely small amount of aluminum was observed in the UNSM-treated specimen. In conclusion, UNSMtreatment was effective in preventing adhesion of the material in contact with aluminum because friction was reducedby the improved surface roughness resulting from the UNSM treatment.

영어초록

Ultrasonic nanocrystal surface modification (UNSM) is used to improve the surface roughness and hardness andenhance the wear resistance of the material. The purpose of this study is to determine the adhesion properties of thesurfaces of UNSM-treated steel to aluminum. To characterize the adhesion between the UNSM-treated surface andthe aluminum, a wear test was conducted using the pin-on-disc method. Consequently, abrasive wear was evident inthe UNSM-treated specimen and tested aluminum fin. However, on the aluminum pin surface worn against thenon-UNSMed specimen, traces of the material being torn off were observed along with abrasive wear, indicating thatsome of the material of the aluminum pin was fused to the non-UNSMed surface during wear testing. EPMArevealed that a large amount of aluminum was present on the worn surface of the non-UNSMed specimen. However,only an extremely small amount of aluminum was observed in the UNSM-treated specimen. In conclusion, UNSMtreatment was effective in preventing adhesion of the material in contact with aluminum because friction was reducedby the improved surface roughness resulting from the UNSM treatment.

참고자료

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