This paper presents a low cost process for fabrication of high efficiency silicon-based solar cells from front side ARC patterning through contact line metallization. This process utilizes a screen printable etch resist to define the contact pattern and a wet etching solution to remove the exposed ARC layer. The metallization stack for the contact line pattern consists of a nickel silicide ohmi...

Formation mechanism of silicon modified aluminide coating applied on a nickel base super alloy IN-738 LC by pack cementation process was the subject of investigation in this research. Study of the microstructure and compositions of the coating was carried out, using optical and scanning electron microscopes, EDS and X-ray diffraction (XRD) techniques. The results showed that due to low partial ...

Increased competition on the tissue market forces tissue makers to continuously raise their product quality and increase their operating efficiency. The creping process and the conditions on the Yankee cylinder are the key factors in the production process and they therefore need to be kept under good control in order to maintain a high and uniform quality. Due to evaporation, dissolved substan...

Ni-B binary coating and Ni-B-W ternary were successfully prepared on titanium alloy (TC4) substrates by electroless plating to improve the hardness wear resistance, followed annealing treatment for better mechanical properties tribological properties. The morphology, composition, microstructure, properties, behaviors of coatings characterized. Both as-plated amorphous, while composition morphol...

Passive control of hypersonic boundary-layer transition using porous coatings has been studied by theoretical analyses, experiments, and numerical simulations. It was found that porous coating stabilizes Mack’s second mode and destabilizes Mack’s first mode. However, there are only few studies on the stabilization efficiency of porous coating. And no work has been reported about the thermochemi...

Abstract: The possibility of vanadium carbide coating formation on AISI L2 steel was studied in molten salt bath containing 33 wt% NaCl- 67 wt% CaCl2. In this research, the effects of time, temperature and bath composition on growing layer thickness were studied. The vanadium carbide coating treatment was performed in the NaCl-CaCl2 bath at 1173, 1273 and 1373 K temperatures for 3, 6, 9 hours a...

The application of a coating layer on a tablet is a commonly used technique to selectively control tablet characteristics. Among the most important functions of the coating is the regulation of the release of active ingredient. In the course of a typical coating process, the tablet passes a spray zone multiple times. Each time, a partial coating layer is applied. For each tablet, this is repeat...