Hardness and Young's modulus distributions in atmospheric plasma sprayed WC–Co coatings using nanoindentation

Abstract

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Effect of TiO 2 addition on the microstructure and nanomechanical properties of Al 2 O 3 Suspension Plasma Sprayed coatings

“…The decrease of H and E in-depth was due to the brittle behaviour of the coating as well as by the softer character of unmelted or partially melted material [50]. A densification process of the unmelted material beyond the tip is also expected.…”

Effects of VC additions on the mechanical properties of bimodal WC–Co HVOF thermal sprayed coatings measured by nanoindentation

“…The algorithm performed a peak fit and deconvolution process employing three to six Gaussian distributions depending on the shape of the original distribution. Peak deconvolution has been reported as a successful way to assess the contribution of individual phases or anisotropic effects to bulk hardness and elastic modulus of different materials and thermal sprayed coatings [16,21,22]. Weibull analysis was employed for similar purposes based on a twoparameter Weibull model to represent the hardness and elastic modulus distribution data [23].…”

Magnetical Response and Mechanical Properties of High Temperature Superconductors, YBaCu3O7-X Materials

“…Moreover, this technique is especially well suited for the characterization of small volumes of material, such as single grains or phases in a composite (Roa et al, 2007), dislocation dynamics (Gaillard et al, 2006), small structures (Choi et al, 2003) or thin films and coatings (Gaillard et al, 2008;Beegan et al, 2005;Roa et al, 2009aRoa et al, , 2011aRayon et al, 2011). Finally, this technique eliminates the need to visualize the imprints produced during the test for homogeneous materials, which makes the extraction of mechanical properties easier.…”

“…The left side of this equation represents the indentation stress or mean contact pressure, also referred to as the Meyer hardness (Basu et al, 2006). The expression in parentheses on the right side of this equation represents the indentation strain (Rayon et al, 2011).…”