TY - JOUR
T1 - Synthesis of titanium carbide/chromium carbide multilayers by the co-evaporation of multiple ingots by electron beam physical vapor deposition
AU - Wolfe, Douglas E.
AU - Singh, Jogender
AU - Narasimhan, Krishnan
N1 - Funding Information:
This material is based upon work supported by the Department of the Navy Space and Naval Warfare Systems Command under Contract No. N00039-97-D-0042, Delivery Order No. 0215.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2002/10/22
Y1 - 2002/10/22
N2 - Titanium carbide and chromium carbide multilayer coatings with varying individual layer thicknesses were synthesized by the co-evaporation of titanium, chromium, and carbon (through tungsten) ingots by electron beam-physical vapor deposition. The adhesion of the multilayer coatings was found to be geater than 50 N. The hardness of the titanium carbide/chromium carbide multilayer coatings was found to increase from 1302 VHN0.050 to 2052 VHN0.050 by decreasing the thickness of the individual layer from 1.2 to C.1 μ. In addition, the average grain diameter was also found to decrease from 3.315 to 0.356 μ by decreasing the thickness of the individual layers. The fracture toughness of the TiC/CrC multilayer coatings decreased from 4.179 to 1.411 MPa-m1/2 with decreasing layer thickness. Lastly, the amount of compressive stress in both the TiC and CrC layers within the multilayer coating was found to decrease with decreasing individual layer thickness. The samples were characterized by various techniques including Vicker's hardness, X-ray diffraction, scanning electron microscopy, scratch testing and fracture toughness, with the results being presented.
AB - Titanium carbide and chromium carbide multilayer coatings with varying individual layer thicknesses were synthesized by the co-evaporation of titanium, chromium, and carbon (through tungsten) ingots by electron beam-physical vapor deposition. The adhesion of the multilayer coatings was found to be geater than 50 N. The hardness of the titanium carbide/chromium carbide multilayer coatings was found to increase from 1302 VHN0.050 to 2052 VHN0.050 by decreasing the thickness of the individual layer from 1.2 to C.1 μ. In addition, the average grain diameter was also found to decrease from 3.315 to 0.356 μ by decreasing the thickness of the individual layers. The fracture toughness of the TiC/CrC multilayer coatings decreased from 4.179 to 1.411 MPa-m1/2 with decreasing layer thickness. Lastly, the amount of compressive stress in both the TiC and CrC layers within the multilayer coating was found to decrease with decreasing individual layer thickness. The samples were characterized by various techniques including Vicker's hardness, X-ray diffraction, scanning electron microscopy, scratch testing and fracture toughness, with the results being presented.
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U2 - 10.1016/S0257-8972(02)00404-8
DO - 10.1016/S0257-8972(02)00404-8
M3 - Article
AN - SCOPUS:0037159167
VL - 160
SP - 206
EP - 218
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
IS - 2-3
ER -