| 摘要 |
PURPOSE:To enhance the corrosion resistance of the surface of the titled electrode, by heat-treating an electrode made of iron-base alloy contg. Al element and forming the film of aluminum oxide on the surface. CONSTITUTION:An electrode made of iron-base alloy (e.g. iron alloy consisting of 20% Cr and 5% Al) contg. Al element is heat-treated (e.g. heat treatment at 1,000 deg.C for 30min) to form the film of aluminum oxide on the surface. Even in case of exposing the electrode obtained by used a way to chloride or the acidic and alkali environment, an electrostatic precipitator used with this electrode can continue a stable operation in a range over a long period.
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