Cohesion and adhesion of nanoporous TiO2 coatings on titanium wires for photovoltaic applications

Transparent conductive oxide layer-less dye-sensitized solar cells consisting of floating electrode with gradient TiOx blocking layer

“…Thermal expansion coefficient of the stainless steel is 16.0ϫ 10 −6 /°C, which is about two times larger than that of the dense TiO 2 ͑7.7ϫ 10 −6 /°C͒. 10,11 This difference in these thermal expansion coefficients is actually responsible for the cracking of the CRBL. The aim of the present report is to propose a structure of the CRBL layer, which effectively blocks the back-electron transfers from the stainless metal to the electrolyte.…”

Evaluation of the interfacial shear strength between pseudoplastic NiTi shape memory alloy wires and epoxy by the pull-out method

“…The surface morphology of the NiTi wire before and after loading was investigated using a scanning electron microscope (SEM FEI XLF30-FEG) with acceleration of 10 kV and is shown in figure 8. A significant increase of surface roughness is obvious, a result of the fragmentation of the superficial titanium oxide layer normal to the loading direction [21]. It seems that an advanced stage of fragmentation was achieved because delamination of fragments is clearly observed, thus increasing the surface roughness even more.…”

Evaluation of adhesion strength, corrosion, and biological properties of the MWCNT/TiO2 coating intended for medical applications

“…Table 5 The results of critical parameters after the nano-scratch test, where the result is presented as mean ± SD (n = 5) was reported to promote the loss of adhesion originating from the presence of titania agglomerates. 63 There is one more parameter describing the adhesion strength of the coating, which is the ratio of hardness to reduced Young's modulus (H/E r ), reported previously in ref. 36, which describes the coating endurance for substrate deections under load.…”

“…The adhesion strength also depends on coating thickness, coating structure, substrate architecture (evaluated using surface preparation), and method of synthesis. 63 As regards the MWCNT/TiO 2 coating thickness, it was assessed previously at 2.016 mm, 36 while the thickness of the TiO 2 coatings below 3 mm Table 3 Raman active optical phonon modes for the MWCNT coating compared with MWCNT powder and literature results for MWCNT coating…”