[PDF] Top 20 Mat. Res. vol.20 número4

... We are sure that the workshop represented a great advance concerning the research quality of the UNESP Materials programs, with presentation of high level works, and opened possibilitie[r] ... See full document

... The efect of temperature on the average area fraction is similar to the holding time, which decreases rapidly from 5.54% in the as-cast alloy to 1.17% at 380 ºC for 8 h homogenization[r] ... See full document

... glass ceramic on the grain growth of alumina obtained by pressureless sintering. Three contents of the LZSA glass ceramic (7, 15, and 21 vol%; mean particle size of 1.52 µm) and three types of alumina (mean ... See full document

... of austenite grains, the microstructure with grain boundary allotriomorphic ferrite, granular bainite and a uniformly dispersion of precipitates in the steel matrix are key aspects in[r] ... See full document

... An experimental study on the phase equilibrium and the liquidus isotherms for the PbO-ZnO-CaO- SiO 2 -“Fe 2 O 3 ” system with CaO/SiO 2 in 1.1 and PbO/(CaO+SiO 2 ) in 2.4 weight ratios, respectively, was carried out in ... See full document

... 19. Pechini MP, inventor. Method of preparing lead and alkaline earth titanates and niobates and coating method using the same to form a capacitor. United States patent 3.330.697. 1967 Jul 11. 20. Carreño NLV, ... See full document

... Figure 6 depicts the XRD spectra analysis of wear debris of Fe-1C-2W-1Ti hot extruded P/M steels, alloyed with tungsten and titanium at 70N of applied load. The XRD pattern of[r] ... See full document

... The results of DTA and microhardness measurements for alloys of boundary systems, as well as the parameters of the crystal lattices for some intermediate alloys, are given in the Tabl[r] ... See full document

... 15, 20, 30, 40 and 50 h, milling was stopped and the XRD pattern of the powder was recorded using a Philips X-Pert difractometer equipped with a copper target and a graphite ... See full document

... The texture strengthening caused by {10-12}extension twins weakens as the volume fraction of twins, so the slop of stage III in strain hardening rate reduces in 1 st and 2 nd pre-s[r] ... See full document

... OCA 20 (DataPhysics Instruments GmbH, Filderstadt) equipment and using the droplet sessile method at room ...SCA 20) were obtained as the average of ten independent measures for each ...of 20 mm, ... See full document

... will resume on the same calotte for longer sliding distances, the vice may be installed on the adjustment pins, allowing exact repositioning of the ball for continued testing. A tactile control panel allows the user to ... See full document

... Thus, performance qualities of the treated leathers such as dry and wet rubbing fastness, color fastness to perspiration and water, inishing adhesion and fastness to UV light, grain c[r] ... See full document

... The efects of diferent process parameters such as: semi die angle ( α ), interfacial friction coeicient ( μ ), and die- punch clearance ( c ) on particularly on punch forces (draw and [r] ... See full document

... The diference between the experimental and the theoretical value for the ternary compound (1.91 eV from Vegard’s Law) is attributed to the small crystal size (6 nm) 22 of[r] ... See full document

... A charge of 8 kg of MG-Si with composition obtained by ICP-OES (Table 1) was melted in a graphite-clay crucible coated with silicon nitride and located within an electric resistance (MoSi 2 ) furnace (Figure 1). An argon ... See full document

... Sample Z3 of Ti6Al4V-5Cu alloys deposited with the laser power of 1200 W and scanning speed of 0.3 m/min has the lowest wear loss.. It was strangely fascinating that the wear loss of [r] ... See full document

... With the increase in load these steels shows remarkable decrease in weight loss due to change in surface microstructure from austenite to ε or ά - martensite which results in increase i[r] ... See full document

... Thin ilms deposited from propanol-chloroform-argon mixtures by plasma enhanced chemical vapor deposition at diferent partial pressures of chloroform in the feed, C Cl , were characteriz[r] ... See full document

... A Model for the formation of oxides according to the anodization time for samples anodized in ammonium niobium oxalate and oxalic acid with addition of HF.. The anodized samples in bo[r] ... See full document