Title : 
Temperature dependence of surface potential decay of ceramic materials
         
        
            Author : 
Roske, L. ; Lebey, Th ; Valdez-Nava, Z. ; Cambronne, J.-P.
         
        
            Author_Institution : 
Lab. Laplace, Univ. de Toulouse, Toulouse, France
         
        
        
        
        
        
            Abstract : 
The aim of this paper is to determine the influence of the temperature on the surface potential decays after corona charging in a needle-to-plane arrangement for different ceramic materials. The materials under study are generally used as substrates in Power Electronics modules and their behaviours in the high temperature range are insufficiently known. A comparison is made between Al2O3, Si3N4 and AlN. A correlation is proposed between the surface potential change over time and their broadband dielectric response.
         
        
            Keywords : 
ceramics; corona; power electronics; surface potential; broadband dielectric response; ceramic materials; corona charging; power electronic modules; surface potential decay; temperature dependence; Ceramics; Corona; Electric potential; Surface impedance; Temperature; Temperature measurement;
         
        
        
        
            Conference_Titel : 
Electrical Insulation and Dielectric Phenomena (CEIDP), 2012 Annual Report Conference on
         
        
            Conference_Location : 
Montreal, QC
         
        
        
            Print_ISBN : 
978-1-4673-1253-0
         
        
            Electronic_ISBN : 
0084-9162
         
        
        
            DOI : 
10.1109/CEIDP.2012.6378880