[PDF] Top 20 Mat. Res. vol.20 número5

... tapping mode to obtain topography and phase contrast scans of AFM, considered the height and roughness for phase´s quantiication. The statistical analysis of the surface roughness and height of samples help to identify ... See full document

... 1- 20 to 24 mesh) may generate an increase in void spaces due to interlacing at the time of extrusion, whereas smaller particle sizes ease the illing of void spaces in the matrix, resulting in greater compaction ... See full document

... Figure 9(b) shows the UV-Vis spectra of the photocatalytic degradation of an aqueous solution of tetracycline with the titanates of nickel, cobalt and iron illuminated with visible li[r] ... See full document

... The major diference between them is related to the procedure used for mixing the reactants. In the Sioplas process, silane and peroxide are fed together into the extruder and processed. The heating in the extrusion ... See full document

... Automatic colorimeter (SC-80C, Beijing Kangguang Optical Instrument Co., Ltd.) was used to measure the color factors, L*, a* and b*. The CIELab colorimetric method, recommended by the Commission Internationale de ... See full document

... The components of bath are concentrated ammonia solution, 0.1 M (NH 4 ) 2 Ce(NO 3 ) 6 and 0.2 M thioacetamide. First, 10 ml 0.1 M (NH 4 ) 2 Ce(NO 3 ) 6 and 10 ml 0.2 M thioacetamide are added in baker containing ... See full document

... In this study, we found that the typical routine for the DSC analysis of PTFE samples in the form of powder granules may not be appropriate for the determination of the degree of crys[r] ... See full document

... The surface oxide of the ingot was taken off by mechanical lapping and followed by homogenization heat treatment under a vacuum condition for 20 hours at 555℃. After homogenization treatment, the ingot was cut ... See full document

... number of ions within its mesopores (spaces between the polycrystalline grains of the sample). The water cleaning process is not totally efective and some ions still remain adsorbed w[r] ... See full document

... This is lower than bulk values but typical for nanosized magnetite, as was found by TEM measurements, and is probably due to cationic redistribution/defects and/or surface efects that afect the magnetization ... See full document

... This signiicant diference between the mean roughness of the samples can be associated to the homogeneity of the system containing POSSmono, which presented a good POSS dispersion in [r] ... See full document

... The specimens were machined in accordance with ASTM E9-09 measuring 10 mm in diameter and 20 mm in length. To simulate the forging process of the prosthesis, the compression test was carried out in open array ... See full document

... In this work, we studied the doping efects on the crystal structure, electric, morphologic and magnetic properties of the BSCCO system with the nominal composition Bi 1.6 Pb 0.4 Sr (2-[r] ... See full document

... Finally, the preliminary tests carried out so far indicate that the properties of the CuNiSiCr forged alloy make it a suitable material for a wide variety of applications, especially t[r] ... See full document

... Parts of the fractured lexural test specimens (n=15) were embedded in acrylic resin. These specimens were ground using sequential wet SiC paper discs with #4000-grit (Norton Abrasivos, Sao Paulo, SP, Brazil) in a ... See full document

... TESCAN VEGA3 scanning electron microscope with energy dispersive spectroscopy (EDS) (Oxford Instruments X-act) was used for microstructure investigation of the prepared alloys and the analysis was carried out at ... See full document

... and 20 seconds while on simulation, the generated heating peak had to happen at 3 minutes and 40 seconds on the surface to reproduce a peak at the thermocouple ... See full document

... a Unidade Experimental de Produção de painel de madeira, Universidade Federal de Lavras – UFLA, Departamento de. Ciências Florestais, CP 3037, CEP 37200-000, Lavras, MG, Brazil[r] ... See full document

... This was determined by the results of magnetization as a function of applied magnetic ield that the material behaves like a ferromagnetic at room temperature, with a marked tendency [r] ... See full document

... Analyzing the width of worn track, Ni-P heat treated coatings showed higher wear resistance when compared to hard chromium and untreated Ni-P deposits.. It is consensus that the trans[r] ... See full document