Title :
Effect of Pressure on Surface Roughness Treated by Cathode Spots of Low Pressure Arc
Author :
Saito, M. ; Tobe, S. ; Iwao, T. ; Inaba, T.
Author_Institution :
Chuo Univ., Tokyo
Abstract :
Cathode spots of a low-pressure arc can remove oxide layers and evaporate impurities on metal surfaces. Removal of the oxide layer using cathode spots is expected to solve recent obstacles to chemical and mechanical cleaning methods. Various phenomena of cathode spots have been investigated for pre-treatment of atmospheric pressure plasma spray (APPS). This study addressed the relation of pressure and initial surface roughness treated by cathode spots of low pressure arc. The test pieces (SS 400) are compared with the ones treated by cathode spots and mechanically blasted surfaces. Results show that the roughness on the sample surfaces is most suitable at 1000 Pa of atmospheric pressure. This result can be applied for the pre-treatment of plasma spray
Keywords :
cathodes; plasma arc spraying; surface cleaning; surface roughness; 1000 Pa; SS 400; atmospheric pressure plasma spray; cathode spots; chemical cleaning; low pressure arc; mechanical cleaning; mechanically blasted surfaces; metal surfaces; oxide layer removal; surface roughness; Atmospheric-pressure plasmas; Cathodes; Chemicals; Cleaning; Impurities; Plasma chemistry; Rough surfaces; Surface roughness; Surface treatment; Thermal spraying;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 2006. ISDEIV '06. International Symposium on
Conference_Location :
Matsue
Print_ISBN :
1-4244-0191-7
Electronic_ISBN :
1093-2941
DOI :
10.1109/DEIV.2006.357360
