The article improves the process of dielectric barrier discharge(DBD)activated anode bonding.The treated surface was characterized by the hydrophilic surface test.The results showed that the hydrophilic angle was sign...The article improves the process of dielectric barrier discharge(DBD)activated anode bonding.The treated surface was characterized by the hydrophilic surface test.The results showed that the hydrophilic angle was significantly reduced under nano-gap conditions and the optimal discharge voltage was 2 kV.Then,the anodic bonding and dielectric barrier discharge activated bonding were performed in comparison experiments,and the bonding strength was characterized by tensile failure test.The results showed that the bonding strength was higher under the nano-gap dielectric barrier discharge.This process completed 110°C ultra-low temperature anodic bonding and the bonding strength reached 2 MPa.Finally,the mechanism of promoting bonding after activation is also discussed.展开更多
The influence of processing parameters on the coating surface roughness of LD10 aluminum alloy treated by the power source with positive and negative pulse in the alkaline electrolyte was discussed.Lots of experiments...The influence of processing parameters on the coating surface roughness of LD10 aluminum alloy treated by the power source with positive and negative pulse in the alkaline electrolyte was discussed.Lots of experiments were done with different processing parameters including the positive final voltage,the negative final voltage,the frequency,the duty ratio,the processing time and electrolyte temperature.And the surface roughness tester TR200 was used to measure the coating surface roughness.The influence of the processing time on the surface roughness is the smallest,less than 0.2μm.The surface roughness decreases gradually with the duty ratio decreasing or the frequency increasing;it decreases gradually with each of the other parameters increasing,and then increases gradually after achieving the minimum value.Appropriately by selecting processing parameters,the coating with Ra 0.6 can be obtained.展开更多
基金Project(6140863020216JW30001)supported by the General Armaments Department Pre-research Fund,China。
文摘The article improves the process of dielectric barrier discharge(DBD)activated anode bonding.The treated surface was characterized by the hydrophilic surface test.The results showed that the hydrophilic angle was significantly reduced under nano-gap conditions and the optimal discharge voltage was 2 kV.Then,the anodic bonding and dielectric barrier discharge activated bonding were performed in comparison experiments,and the bonding strength was characterized by tensile failure test.The results showed that the bonding strength was higher under the nano-gap dielectric barrier discharge.This process completed 110°C ultra-low temperature anodic bonding and the bonding strength reached 2 MPa.Finally,the mechanism of promoting bonding after activation is also discussed.
基金The work was supported by the Innovation Fund for Small Technology-based Firms for Harbin DS Numerical Control Equipment Co.,Ltd.Samples,the micro-arcoxidation equipment and chemicals were provided by thecompany。
文摘The influence of processing parameters on the coating surface roughness of LD10 aluminum alloy treated by the power source with positive and negative pulse in the alkaline electrolyte was discussed.Lots of experiments were done with different processing parameters including the positive final voltage,the negative final voltage,the frequency,the duty ratio,the processing time and electrolyte temperature.And the surface roughness tester TR200 was used to measure the coating surface roughness.The influence of the processing time on the surface roughness is the smallest,less than 0.2μm.The surface roughness decreases gradually with the duty ratio decreasing or the frequency increasing;it decreases gradually with each of the other parameters increasing,and then increases gradually after achieving the minimum value.Appropriately by selecting processing parameters,the coating with Ra 0.6 can be obtained.
