METHOD FOR FORMING COATING LAYER AND COATING MATERIAL HAVING WATERPROOF PROPERTY

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The present disclosure relates to a method for forming a coating layer and a coating material having waterproof property, and the method for forming a coating layer according to the present disclosure includes (a) supplying a precursor comprising a rare earth metal onto a substrate; (b) purging impurities of remaining precursor after combination of the rare earth metal onto the substrate; (c) supplying an oxidant onto the substrate; and (d) purging remaining impurities after forming a coating layer including a rare earth oxide on the substrate. According to the method for forming a coating layer of the present disclosure, a coating layer with hydrophobic or superhydrophobic property may be formed by controlling a temperature of the substrate so that an atomic ratio of a carbon element in the coating layer is less than 1% to form the coating layer with hydrophobic or superhydrophobic property.