Abstract
Three different contents of nano-sized TiN powers of 20 nm in size were added to nano-sized SiC powders of 40 nm. Vacuum cold spray (VCS) process was used to deposit SiC-TiN composite coatings on Al2O3 substrates. Microstructure and phase structure analysis of the samples was performed by scanning electron microscopy (SEM) and x-ray diffraction (XRD). Sheet resistance of the VCS coatings was measured using a four-point probe method. The influences of TiN additions on the electrical resistivity of SiC-TiN composite coatings and the conductive mechanisms were investigated. The electrical resistivity of SiC-TiN coatings decreases with increasing TiN contents, reaching a minimum of 1.82 Ω m with 50 mol% TiN.
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The present research project was supported by National Natural Science Foundation of China (Granted No. 50705075).
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This article is an invited paper selected from presentations at the 4th Asian Thermal Spray Conference (ATSC 2009) and has been expanded from the original presentation. ATSC 2009 was held at Nanyang Hotel, Xi’an Jiaotong University, Xi’an, China, October 22-24, 2009, and was chaired by Chang-Jiu Li.
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Liu, Y., Wang, YY., Yang, GJ. et al. Effect of Nano-Sized TiN Additions on the Electrical Properties of Vacuum Cold Sprayed SiC Coatings. J Therm Spray Tech 19, 1238–1243 (2010). https://doi.org/10.1007/s11666-010-9544-6
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DOI: https://doi.org/10.1007/s11666-010-9544-6