The pretreatment for substrate was carried out in change of gun pressure of bar using wet blasting. The size of powder was about . As the results, the surface roughness of cemented carbide substrate was improved with increment of gun pressure of wet blasting. A new surface layer was formed and Co particles were uniformly distributed over the entire surface after pretreatment. The adhesion of the pretreated substrate in same PVD-TiAlN film was improved and in approximately shown the best adhesion value.

• Hong
• Sung-Pill
• Kim
• Soo-Hyun
• Kang
• Jae-Hoon
• Yoon
• Yeo-Kyun
• Kim
• Hak-Kyu