| 摘要 |
PROBLEM TO BE SOLVED: To decrease the contact resistance on the coating film surface and increase conductivity and acid resistance by forming a coating film containing a conductor made of mixed powder of graphite and carbon black in the specified thickness on the surface of an acid-treated base material of austenite stainless steel. SOLUTION: The passive film formed on the surface of an austenite stainless steel plate used as a base material is removed by acid pickling, a coating material prepared by dispersing mixed powder of graphite and carbon black is applied to the base material, and a conductive coating film having a film thickness of 3-20μm is formed. The contents of graphite powder and carbon black powder in the coating material are preferable to be 25-50 pts.wt. graphite and 50-90 pts.wt. carbon black based on the 100 pts.wt. resin from the standpoint of the conductivity of the coating film, the adhesion of the coating film, coating material property, and coating work efficiency. The coating film can keep stable conductivity by the elastic property even under the environment where vibration or shock is applied.
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