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提出了一种把脉冲电源的输出两极均作为沉积电极、被处理试样作为一种感应电极、利用产生的串联脉冲放电沉积金属涂层的新技术.通过“针-板-针”电极系统的放电电压-放电间隙测量实验证实了上述串联脉冲放电的物理过程.采用振动式串联电脉冲沉积设备在Ni20Cr合金基体上成功地制备出了Ni20Cr微晶涂层和Ni20Cr弥散Y2O3微晶涂层.950℃空气中的高温氧化实验结果表明,Ni20Cr合金微晶涂层极大地提高了基体合金的抗高温氧化性能,同时还证实在微晶涂层中施加细小弥散Y2O3颗粒有助于进一步降低涂层的氧化速率及提高氧化膜的抗剥落性能.
A new technique is proposed, in which both electrodes of the pulse power supply are used as deposition electrodes and the treated sample acts as a sensing electrode, and the deposited metal coating is deposited by the generated series pulse discharge. Discharge voltage - discharge gap measurement experiments confirmed the physical process of the series pulse discharge.The Ni20Cr microcrystalline coating and Ni20Cr dispersed Y2O3 microcrystalline coating were successfully prepared on a Ni20Cr alloy substrate by a vibrating tandem electric pulse deposition equipment. ℃ air oxidation experiment results show that, Ni20Cr alloy micro-coating greatly improves the high temperature oxidation resistance of the matrix alloy, but also confirmed that the application of fine dispersed Y2O3 particles in the micro-crystalline coating helps to further reduce the coating Oxidation rate and improve the anti-spalling performance of the oxide film.