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of the magnetic and structural properties dependence on the particle size was realized.For this,commercial NdFeB powder was separated into five different mean particle sizes using sieves.Besides,from the original... diffraction(XRD),vibrating sample magnetometry(VSM),and Mdssbauer spectrometry(MS).The particle sizes of the samples vary from the micrometer to the nanometer scale.The crystallite size decreases......
Preparation of ceria with large particle size and high appearance density王嵩龄,刘钧云,贾江涛,廖春生,严纯华摘 要:Cerium is one of the most abundant rare earth elements... calcination process for fabricating the ceria with large particle size and high appearance den- sity was reported. During precipitation, a certain amount of mineral acid such as nitric acid served......
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, Prt=0.5. 2.2 Particle phase simulation Lagrangian method was used for predicting the trajectory of the dispersed phase. In the present, the particle size region is from 0.2 to 3 mm; the forces... of the particles are initially set to the same values as the hot gas. The average size of particles in the simulation is 2 mm and the particle size bins complied with a Rosin–Rammler logarithm distribution......
were collected to analyze the atomization state of the particles in arc spraying forming, the microstructure and properties of metallic and ceramic coatings were investigated and compared. Particle size analyzer was used for quantifying particle size. The XRD, SEM and optical microscope(OM) were used to analyze the phase composition and microstructure of the particles and coatings. From......
Computation. Edinburgh: IEEE Press, 2005: 1769-1775. [6] E Gang-qiang, XUN Shi-yu. Particle swarm optimization based on dynamic population size [J]. Information and Control, 2008, 37(1): 18-27...; A novel particle swarm optimizer......
Effect of particle size on the polycrystalline CeB6 cathode prepared by spark plasma sintering包黎红,张久兴,周身林Key Laboratory of Advanced Functional Materials, Ministry of Education, College of Materials... by using the spark plasma sintering (SPS) method in an oxygen free system. The starting precursor nanopowders with an average grain size of 50 nm were prepared by high-energy ball milling. The ball......
Effect of Particle Size on the Hysteretic Behavior and Magnetocaloric Effect of La0.5Pr0.5Fe11.4Si1.6 CompoundJiaohong Huang1,Naikun Sun2,Cuilan Liu1,Yumei Ge1,Tao Zhang1,Feng Liu2,Pingzhan Si31... by a large magnetic hysteresis of 56 J/kg and a noticeable thermal hysteresis of about 1 K.If the bulk sample is ground into middle-size particles(30-60 μm),then the thermal hysteresis is almost eliminated......