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showed superior and reproducible performance towards 1×10-6 ammonia with gas response of 63.79% and 66.87% and response/recovery time of 13 and 3 s, respectively, at room temperature (29 °C... ammonia sensing characteristics of the synthesized ZnO. Key words: zinc oxide nanostructures; gas sensor; sensitivity; response/recovery time 1 Introduction Semiconductor metal oxide based gas......
An-qiang, JEONG Y H, CAO Guo-zhong. V2O5 xerogel electrodes with much enhanced lithium-ion intercalation properties with N2 annealing[J]. Journal of Materials Chemistry, 2009, 19(46): 8789-8795. [44] ZHAO......
and short calcination time make perovskite-type oxides not easy to agglomerate. Some researchers [33, 34] adopted the CNA method to successfully synthesize perovskite nanoparticles and found that the CNA gel... with long calcinations time, resulting in low specific surface area. In order to enlarge their surface area, perovskite-type oxides with various morphologies, including nanosheets [2, 3], nanofibers [4, 5......
in a molten bath of zinc to grow a thick coating. In turn, continuous galvanizing consists of unwinding coils of cold-rolled steel and feeding the sheet incessantly through a cleaner, an annealing furnace...% or 25% H2SO4 and 100-300 g/mL powder were used. The suspensions were agitated with a magnetic stirrer (400 r/min). Leaching time was 120 min. A temperature of the bath was monitored during the process......
, the oil, which covers the workpiece, acts as the mean of applying high hydrostatic force to the sample. At the same time, it prevents direct contact of the workpiece and the die. The schematic... the die and the sample and prevention from direct contact of them. However, to process the sample the friction cannot be omitted in the deformation regions. At the same time using the fluid......
-deformation on the microstructures and properties of 2219 aluminum alloy during aging treatment[J]. Journal of Alloys and Compounds, 2017, 699: 1140-1145. [30] PRABHU T R. Effects of ageing time... cast Al-5.0Cu-0.4Mn-0.1Ti-0.1RE alloy[J]. Journal of Central South University, 2017, 24(10): 2231-2237. [92] DENG Q, FU R, JING L, et al. Influence of cold-rolling and annealing treatments......
treatments[J]. BHM Bergund Hüttenmannische Monatshefte, 2020, 165(3): 164-168. [52] WANG Min, SONG Bo, WEI Qing-song, et al. Effects of annealing on the microstructure and mechanical properties of selective... treatment time on the microstructure and mechanical deformation behavior of additive-manufactured AlSi10Mg components[J]. Progress in Additive Manufacturing, 2020. [68] SCHNELLER W, LEITNER M......
. Also, the nano-sized particles can interact with dislocations and GBs, and influence the recrystallization behaviors. At the same time, the pinning effect of the particles on the GB migration can inhibit... increase in the first 6 h, and increases slowly for the longer aging time. The aging time for the 7085Al alloy to reach its peak-aged hardness is 22 h. There are similar aging behaviors......
of elongation. But the long period stacking ordered (LPSO) structure introduced into Mg-Li alloys can improve the strength and elongation at the same time [37]. In addition, severe plastic... layer consisted of the oxides at grain boundaries and in α-Mg, β-Li phases. Carbonate was not found at Mg-8Li alloys [57] ascribed to the distinction in exposure time, because the formation......
and other process parameters. A change in base plate thickness changes the stirring action, heating and cooling rate and height of weld. FSW of a thicker material using a short tool develops an improper.... Welding conditions like improper tool design, too short tool pin, too low plunge depth, variation in plate thickness or misalignment of the tool with respect to the butting surfaces increases......
