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公开(公告)号：US3923611A
公开(公告)日：1975-12-02
申请号：US53544174
申请日：1974-12-23
申请人： FERRO CORP
发明人： RUDERER CLIFFORD G
摘要： A process is disclosed for preparing an iron workpiece containing at least 0.03% by weight carbon for a direct-on, onefire ceramic or enamel coat. A substantially continuous layer of substantially pure iron is electrodeposited on a surface of the carbon-rich iron workpiece from a liquid medium containing iron ions while using the workpiece as a cathode. The polarity of the electrodeposition is then reversed to remove some of the iron deposited and produce an exposed, fissured, textured surface in the pure iron layer. When a ceramic coat is conventionally applied over the fissured surface, it adheres well, even though the iron workpiece may contain appreciable amounts of carbon which normally would prevent such adherence for a direct-on ceramic coat. Optionally, the cathodic deposition of iron may comprise a deposition of a non-porous layer followed by an overlay of porous iron and/or take place from an aqueous medium having an acidic pH. A film of a covering metal such as nickel may also be deposited over the fissured layer prior to depositing the ceramic coat.
摘要翻译： 公开了一种用于制备含有至少0.03重量％碳的铁工件用于直接，单火陶瓷或搪瓷涂层的方法。 在使用工件作为阴极的同时，从含有铁离子的液体介质将基本上连续的基本上纯的铁层电沉积在富碳铁工件的表面上。 然后电沉积的极性反转以除去沉积的一些铁，并在纯铁层中产生暴露的，裂缝的纹理表面。 当传统地将陶瓷涂层施加在裂纹表面上时，即使铁工件可能含有可观察量的碳，通常会阻止直接陶瓷涂层的粘附，其粘附良好。 可选地，铁的阴极沉积可以包括无孔层的沉积，随后是多孔铁的覆盖层和/或从具有酸性pH的水性介质发生。 在沉积陶瓷涂层之前，覆盖金属如镍的膜也可以沉积在裂缝层上。
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