The electrical properties of coating obtained by vacuum arc deposition

Abstract

a b s t r a c t 23 This paper investigates the electrical properties of the coating based on Ti-C-B system. The coating was 24 obtained by vacuum-arc method by spraying of multi compound cathode prepared by reactive hot 25 pressing of Ti, carbon black and amorphous B powder mixture. 26The electrical conductivity of the coating was measured in temperature range of 10-320 K which was 27 about r = 4.8 Á 10 3 X À1 cm À1 in the entire temperature range. The carrier concentration measured was 28 about n = 1 Á 10 22 cm À3 . The charge carriers' mobility varies between 10 and À7 and changes sign at 29 temperature about T = 225 K. 30