Title :
Effect of substrate temperature on microstructure and properties of the CuCr25 alloys produced by electron beam cladding
Author :
Durakov, V. ; Gnyusov, S. ; Schneider, A. ; Popov, Serge ; Lavrinovich, V. ; Batrakov, Alexander ; Dampilon, B.
Author_Institution :
SB, Inst. of Strength Phys. & Mater. Sci., Tomsk, Russia
fDate :
Sept. 28 2014-Oct. 3 2014
Abstract :
The microstructure and properties of the contact CuCr alloy produced by electron-beam cladding have been investigated. The effect of the electron beam cladding parameters and preheating temperature of the base metal on the structure and the properties of the coatings has been determined. The bimodal structure of the cladding coating has been established. The short circuit currents tests are made on the Weil-Dobke synthetic circuit simulating operation of a VCB in real electric networks. Test results showed that the cladding contact material has better breakdown strength after current zero than the sintered contact material in mass production. Application of the technology of electron beam cladding in the production of contact material would significantly improve a specific characteristics and the reliability of vacuum switching equipment.
Keywords :
chromium alloys; claddings; copper alloys; crystal microstructure; Weil-Dobke synthetic circuit simulating operation; bimodal structure; breakdown strength; electron beam cladding; microstructure; short circuit currents; structural properties; substrate temperature; vacuum switching; Chromium; Electron beams; Materials; Microstructure; Vacuum arcs;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum (ISDEIV), 2014 International Symposium on
Conference_Location :
Mumbai
Print_ISBN :
978-1-4799-6750-6
DOI :
10.1109/DEIV.2014.6961735
