Huawei Yin

Liquid lead–bismuth eutectic alloy is one of the candidate coolants for fourth-generation nuclear power systems because of its good physical and chemical properties, neutron economic performance, and safety. However, the compatibility between the coolant and structural steel is still the main factor restricting its large-scale industrial applicatio...

The superhydrophobic coatings with excellent performance are prepared on the brass substrate to improve its application limitations in real production. In this article, the superhydrophobicity was obtained by the modification of TiO2 nanoparticles, and the FAS/STA-TiO2 superhydrophobic coating of the composite structure was obtained by modification...

In this study, the carbon steel substrates were coated with nickel (Ni), zinc oxide (ZnO) and ZnO/Ni coatings by electrodeposition approach and modified with stearic acid (STA)-ethanol solution to obtain STA-Ni, STA-ZnO and STA-ZnO/Ni coatings, respectively. The surface morphologies, chemical compositions and surface roughnesses of the modified coa...

With the highly frequency of oil spillages and chemical leakages, the application of superhydrophobic surface in oil-water separation is promising. Herein, the myristic acid/TiO2@raw quartz sand ([email protected]) with superhydrophobic-superoleophilic properties has been judiciously designed and synthesized that could be utilized for oil-water sep...

A superhydrophobic Cu/TiO2 composite coating was prepared through the electrodeposition and fluorinated modification of a 304 stainless steel surface. The Cu plating coated with the hierarchical concave-convex structure was initially fabricated by tuning current density and electrodeposition time. A codeposition technique was used in obtaining a co...

In this article, nickel (Ni) coating was constructed on brass substrate by a simple electrodeposition technique, and myristic acid/TiO2 composite (MTC) modifier was used to modify Ni coating. The chemical composition and surface morphology of MTC confirm that myristic acid (MA) was successfully grafted on TiO2 nanoparticles. As a comparison, the st...

A novel method of crystal growth by introducing jet flow to the pyramidal‐restriction long‐seed growth system of potassium dihydrogen phosphate (KH2PO4, KDP) in rotating crystal method, namely, the jet‐rotating crystal method, is proposed. To evaluate the prospect of this new method, three‐dimensional (3D) time‐dependent numerical simulations of fl...

In this investigation, the corrosion resistances of hydrochloric acid (HCl), p-toluenesulfonic acid (TSA) and dodecylbenzene sulfonic acid (DBSA) doped polyaniline (PANI)/epoxy resin (EP) composite coatings on carbon steel were studied. Firstly, HCl, TSA and DBSA doped PANIs were obtained using chemical oxidative polymerization, respectively. The s...

Hydrogen production from water splitting by sunlight is a promising approach to solve the increasing energy and environmental crises, and two-dimensional (2D) g-C3N4 monolayer is a red star in this realm. However, it suffers from low quantum efficiency caused by fast combination of photogenerated electrons and holes. In this work, we investigate th...

Five potassium dihydrogen phosphate crystals were successfully grown by the 2D-translation method with continuous filtration. Crystals grown by this method and the conventional rotation method were compared from the perspectives of optical transmission, optical absorption, microhardness, thermal stability, laser damage threshold and chemical etchin...

A stirrer is added to the traditional rotating crystal growth system of ammonium dihydrogen phosphate (NH4H2PO4, ADP), aiming at effectively utilizing the convection to improve the mass transfer and the distribution homogeneity of the supersaturation on the crystal face. 3D numerical simulation on flow and surface supersaturation distribution under...

In this investigation, a comparative study on the anticorrosion properties of poly(N-methylaniline) (PNMA) coating, as well as PNMA-ZnO and PNMA/SiC-ZnO bilayer coatings, was carried out. The polymeric materials (PNMA and PNMA/SiC composite) were synthesized by emulsion polymerization method. The structures of the obtained polymeric materials were...

A novel solution-based crystal growth method, namely, the three-dimensional motion growth method (3D MGM) had been suggested by our team to effectively utilize convection for simultaneous enhancement of morphological stability and mass transfer. To evaluate this new method and link it to practice, numerical simulations of flow and mass transfer dur...

Transparent potassium dihydrogen phosphate (KDP) crystals that are grown from different translational velocities and orientation configurations were obtained during growth through a novel motion mode called 2D translation method. The grown crystals were investigated by microhardness, dielectric, chemical etching, thermal analysis and laser damage t...

A novel technique of growing large crystals of potassium dihydrogen phosphate (KDP) named solution-jet method is proposed. The aim is to increase supersaturation on the pyramidal face, especially for crystal surface regions close to the rotation axis. The fluid flow and surface supersaturation distribution of crystals grown under different conditio...

A numerical study of the unsteady turbulent flow and mass transfer involved in the potassium dihydrogen phosphate crystal growth from an aqueous solution with a three-dimensional spiral motion configuration was performed using the standard k–ε model with an enhanced wall treatment. The three-dimensional spiral motion is composed of a uniform circul...

Computational analysis of the three-dimensional flow and mass transfer involved in the growth of KDP crystal with a planetary motion (PM) was conducted, in which the crystal executes an orbital revolution with a constant revolution rate during its self-rotation together with periodically changing the direction of crystal rotation. Compared with the...

A novel solution-based crystal growth method, namely, the three-dimensional motion growth method (3D MGM) is proposed to effectively utilize convection for simultaneous enhancement of morphological stability and mass transfer. To evaluate this new growth method, numerical simulations of flow and mass transfer are carried out on growth of potassium...

A novel system for rapid crystal growth, namely three-dimensional motion growth method (“3D MGM”) was proposed. Using this system, a potassium dihydrogen phosphate (KDP) seed was grown to a single crystal with a final size of 50×55×85 mm3. The KDP crystal was characterized by Raman spectroscopy, UV-vis-NIR spectroscopy, extinction ratio, laser dama...

In this study, a novel motion mode for crystals during growth, i.e., 2D translation, is proposed. Numerical simulations of flow and mass transfer are conducted for the growth of large-scale potassium dihydrogen phosphate (KDP) crystals subjected to the new motion mode. Surface supersaturation and shear stress are obtained as functions of the transl...

The induction period was measured at 25℃ with different doping concentrations of EDTA and supersaturation ratios of ZTS. The effects of doping concentration and supersaturation ratio on nucleation of ZTS solution were studied. The study revealed a homogeneous nucleation region at high supersaturation ratios (S>1.13) and a heterogeneous nucleation r...

In situ atomic force microscopy (AFM) has been utilized in studies of the growth mechanism on the (100) face of zinc tris (thiourea) sulphate (ZTS) crystals growing from solution. The growth on the (100) face of pure ZTS crystal is mainly controlled by two dimensional (2D) nucleation mechanisms, under which the hillock is formed through layer-by-la...

The metastable zone of KDP solution was measured firstly. According to the result, the "point-seed" rapid crystal growth experiments were conducted. The crystals were grown in two different motion methods-"2-dimensional translation" and "rotary movement". Finally, Crystals in size of 55 mm × 55 mm ×48 mm and 60 mm ×60 mm ×45 mm were achieved. The c...

Comparing with the traditional concentric rotation method (rotation radius is 0 cm), the effects of different rotation radii on the growth rate of KDP crystals were studied by experimental methods. It was found that with the increase of rotation radius from 0 cm, the growth rate of each direction of crystals first increased and then decreased in a...

Numerical simulations of flow and mass transfer were carried out to obtain the solute concentration (supersaturation) distribution of crystal surface in the growth process of potassium dihydrogen phosphate (KDP) single crystals by rotating-crystal method. The temporal variation of surface concentration fields was presented. Time-averaged field of s...

As a new solution crystal growth method, "three-dimension motion crystal growth method" has obvious advantages in both crystal quality and growth rate when growing large size KDP crystal. The stresses of KDP in the process of crystal growth were calculated by finite element method in order to obtain the stress state. The results show that the cryst...

Via studying the normal growth rates of the (100), (010) and (001) faces of ZTS crystal under different doping concentrations of L-alanine, we found that the normal growth rate of ZTS crystal increased linearly with the increase of supersaturation. With increase of doping concentration, L-alanine addition led to an initial increase and then a decre...