Bio: Ziqiang Li is an academic researcher from Tsinghua University. The author has contributed to research in topics: Coating & Graphite. The author has an hindex of 10, co-authored 47 publications receiving 362 citations.
TL;DR: In this article, a three-step process is used to fabricate submicron silicon carbide powders in the reaction of silicon with carbon during the third step of thermal treatment.
TL;DR: Experiments were carried out in a specially designed high-density coupled circulating fluidized bed system where fluidized catalytic cracking (FCC) particles ( ρ p =1300 kg/m 3, d p =69 μm) were used as discussed by the authors.
TL;DR: In this paper, a dynamic calibration method for tracking the projection of the fuel free zone accurately, instead of using a fuel-free zone mask of fixed size and position, was proposed, and image and graphic processing methods were combined for automatic recognition of escaped coated fuel particles.
TL;DR: In this article, large-scale silicon carbide nanowires with lengths up to several millimeters were synthesized by a coat-mix, molding, carbonization, and high-temperature sintering process, using silicon powder and phenolic resin as the starting materials.
Abstract: Large-scale silicon carbide nanowires with the lengths up to several millimeters were synthesized by a coat-mix, moulding, carbonization, and high-temperature sintering process, using silicon powder and phenolic resin as the starting materials. Ordinary SiC nanowires, bamboo-like SiC nanowires, and spindle SiC nanochains are found in the fabricated samples. The ordinary SiC nanowire is a single-crystal SiC phase with a fringe spacing of 0.252 nm along the [1 1 1] growth direction. Both of the bamboo-like SiC nanowires and spindle SiC nanochains exhibit uniform periodic structures. The bamboo-like SiC nanowires consist of amorphous stem and single-crystal knots, while the spindle SiC nanochains consist of uniform spindles which grow uniformly on the entire nanowires.
TL;DR: In this article, a uniform and uniform Zirconium carbide (ZrC) coatings have been successfully deposited on coated fuel particles using a ZrCl4+H2+Ar+C3H6 gas mixture.
Abstract: Compact and uniform zirconium carbide (ZrC) coatings have been successfully deposited on coated fuel particles using a ZrCl4+H2+Ar+C3H6 gas mixture. Zirconium tetrachloride (ZrCl4) powder feeder was especially designed and manufactured to control accurately the flow rate of ZrCl4 and produce ZrC on an industrial scale. The coating has a large density (6.57 g/cm3), a thickness of 35 μm, a stoichiometry close to Zr/C=1, and a clear interface between the coating and substrate. The coating exhibits an fcc-ZrC phase with a grain size of 11.18 nm and a (111) texture coefficient of 0.57, which corresponds to a polycrystalline microstructure of randomly oriented ZrC grains. The preparation apparatus, processing conditions, properties, microstructures, and morphologies of the ZrC coating are investigated systematically.
TL;DR: A comprehensive review on the development of fundamental researches on downer reactors as well as the particular industrial demonstrations for the fluid catalytic cracking (FCC) of heavy oils and coal pyrolysis in thermal plasma can be found in this article.
TL;DR: The results suggest that ALD is an effective way to deposit NiO on SiC for nonenzymatic glucose sensing and the superior electrochemical ability of ALD NiO/SiC is ascribed to the strong interaction between NiO and theSiC substrate and the high dispersity of NiO nanoparticles on the SiC surface.
Abstract: NiO nanoparticles are deposited onto SiC particles by atomic layer deposition (ALD). The structure of the NiO/SiC hybrid material is investigated by inductively coupled plasma atomic emission spectrometry (ICP-AES), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The size of the NiO nanoparticles is flexible and can be adjusted by altering the cycle number of the NiO ALD. Electrochemical measurements illustrate that NiO/SiC prepared with 600 cycles for NiO ALD exhibits the highest glucose sensing ability in alkaline electrolytes with a low detection limit of 0.32 μM (S/N = 3), high sensitivity of 2.037 mA mM–1 cm–2, a linear detection range from approximately 4 μM to 7.5 mM, and good stability. Its sensitivity is about 6 times of that for commercial NiO nanoparticles and NiO/SiC nanocomposites prepared by a traditional incipient wetness impregnation method. It is revealed that the superior electrochemical ability of ALD NiO/SiC is ascribed to the strong interaction betw...
TL;DR: In this paper, a continuous, uniform Hf(Ta)C coating was co-deposited on carbon/carbon composites by chemical vapor deposition and phase composition, microstructure and ablation properties of the HfTaC coating were investigated.
TL;DR: The profoundly improved tabletability of acetaminophen confirmed the effectiveness of the particle coating approach in improving tableting performance of drugs and is expected to have transformative effects on formulation development of poorly compressible drugs.
Abstract: Purpose To test the hypothesis that coating particles with a highly bonding polymer is effective in improving tabletability of poorly compressible drugs
TL;DR: In this article, silicon carbide nanoparticles (SiC) was used for electrode modification and electrocatalytic oxidation of insulin, which showed high sensitivity, excellent catalytic activity, short response time, long term stability and remarkable antifouling property toward insulin and its oxidation product.