The plasma electrolytic carbonitriding(PEC/N)process is applied to cast iron using an aqueous solution of acetamide and glycerin as the electrolyte.Mechanical properties of the carbonitriding layers on cast iron are i...The plasma electrolytic carbonitriding(PEC/N)process is applied to cast iron using an aqueous solution of acetamide and glycerin as the electrolyte.Mechanical properties of the carbonitriding layers on cast iron are investigated.After the PEC/N treatment,the microhardness and wear resistance of cast iron are improved significantly compared to the untreated substrate.When the substrate is processed at 350V for 60 s,the coating presents the highest microhardness and it is about 554.14HK0.02,and the coating with the highest hardness has the best wear resistance.展开更多
An atmospheric cold plasma brush suitable for large area and low-temperature plasma-based sterilization is designed and used to treat enterococcus faecalis bacteria.The results show that the efficiency of the inactiva...An atmospheric cold plasma brush suitable for large area and low-temperature plasma-based sterilization is designed and used to treat enterococcus faecalis bacteria.The results show that the efficiency of the inactivation process by helium plasma is dependent on applied power and exposure time.After plasma treatments,the cell structure and morphology changes can be observed by scanning electron microscopy.Optical emission measurements indicate that reactive species such as O and OH play a significant role in the sterilization process.展开更多
基金by the National Natural Science Foundation of China under Grant Nos 10735090 and 11005151(Young Scientists Fund).
文摘The plasma electrolytic carbonitriding(PEC/N)process is applied to cast iron using an aqueous solution of acetamide and glycerin as the electrolyte.Mechanical properties of the carbonitriding layers on cast iron are investigated.After the PEC/N treatment,the microhardness and wear resistance of cast iron are improved significantly compared to the untreated substrate.When the substrate is processed at 350V for 60 s,the coating presents the highest microhardness and it is about 554.14HK0.02,and the coating with the highest hardness has the best wear resistance.
基金Supported by the Young Scientists Fund of the National Natural Science Foundation of China under Grant No 11005151.
文摘An atmospheric cold plasma brush suitable for large area and low-temperature plasma-based sterilization is designed and used to treat enterococcus faecalis bacteria.The results show that the efficiency of the inactivation process by helium plasma is dependent on applied power and exposure time.After plasma treatments,the cell structure and morphology changes can be observed by scanning electron microscopy.Optical emission measurements indicate that reactive species such as O and OH play a significant role in the sterilization process.
