Abstract: A composite plastic member includes a first stacked body comprised of a plurality of chromium layers stacked on a plastic substrate; and a second stacked body comprised of a plurality of chromium nitride layers stacked on the first stacked body. Each of the first and second stacked bodies is formed such that a lower-hardness layer having a lower hardness than upper and lower layers which contact with and sandwich the lower-hardness layer therebetween and a higher-hardness layer having a higher hardness than upper and lower layers which contact with and sandwich the higher-hardness layer therebetween are alternately stacked in a stacking direction; and a thickness of a higher-hardness chromium nitride layer is not more than 40% of a thickness of a lower-hardness chromium nitride layer in the second stacked body. The composite plastic member has high wear resistance and satisfactory sliding performance, and the conductivity and excellent outer appearance.

Abstract: A composite plastic member includes a first stacked body comprised of a plurality of chromium layers stacked on a plastic substrate; and a second stacked body comprised of a plurality of chromium nitride layers stacked on the first stacked body. Each of the first and second stacked bodies is formed such that a lower-hardness layer having a lower hardness than upper and lower layers which contact with and sandwich the lower-hardness layer therebetween and a higher-hardness layer having a higher hardness than upper and lower layers which contact with and sandwich the higher-hardness layer therebetween are alternately stacked in a stacking direction; and a thickness of a higher-hardness chromium nitride layer is not more than 40% of a thickness of a lower-hardness chromium nitride layer in the second stacked body. The composite plastic member has high wear resistance and satisfactory sliding performance, and the conductivity and excellent outer appearance.