| 摘要 |
This invention relates to the plasma process in electrolytic or combinati ve electrolyte/gas/suspension environments for cleaning, case hardening, coatin g and anodizing of ferrous and non-ferrous metals and their alloys as well as composites. The plasma process carried on the material surfaces is established by arranging the materials to form the cathode or anode of an electrolytic cell circuit in which the counter-electrode is the electrolytic jet head and the jetted electrolyte is the electrically conductive medium between the electrodes biased by an AC, DC or pulse DC voltage in excess of 100 V. The electrolyte used is an aqueous solution impinged with air/gas into electrolytic flow or incorporated with powder additives into the solution at various percentages. Without requirement of a large power, the process can be adapted for cleaning, case hardening (i.e., carburizing, carbonitriding, nitrocarburizing and nitriding) and coating (i.e., metallic, ceramic, polymeric and composite) of localized and large conductive material surfaces when the surfaces are as the cathode and for anodizing of lightweight (e.g., Mg, A1 and Ti) metals and alloys when the materials are as the anode. |
