The Evaluation of Surface and Adhesive Bonding Properties for Cold Rolled Steel Sheet for Automotive Treated by Ar/O2 Atmospheric Pressure Plasma

대기압 Ar/O2 플라즈마 표면처리된 자동차용 냉연강판의 표면특성 및 접착특성평가

  • 이찬주 (부산대학교 대학원 정밀기계공학과) ;
  • 이상곤 (부산대학교 대학원 정밀기계공학과) ;
  • 박근환 ((주)성우하이텍 기술연구소) ;
  • 김병민 (부산대학교 기계공학부)
  • Published : 2008.04.01


Cold rolled steel sheet for automotive was treated by Ar/$O_2$ atmospheric pressure plasma to improve the adhesive bonding strength. Through the contact angle test and calculation of surface free energy for cold rolled steel sheet, the changes of surface properties were investigated before and after plasma treatment. The contact angle was decreased and surface free energy was increased after plasma treatment. And the change of surface roughness and morphology were observed by AFM(Atomic Force Microscope). The surface roughness of steel sheet was slightly changed. Based on Taguchi method, single lap shear test was performed to investigate the effect of experimental parameter such as plasma power, treatment time and flow rate of $O_2$ gas. Results shows that the bonding strength of steel sheet treated in Ar/$O_2$ atmospheric pressure plasma was improved about 20% compared with untreated sheet.


Atmospheric Pressure Plasma;Surface Treatment;Adhesive Bonding Strength;Cold Rolled Steel Sheet


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