33 Result(s)
within
Dong-**n Duan
Characterization and Evaluation of Materials
-
Article
Evolution of nonmetallic inclusions in 80-t 9CrMoCoB large-scale ingots during electroslag remelting process
In combination with theoretical calculations, experiments were conducted to investigate the evolution behavior of nonmetallic inclusions (NMIs) during the manufacture of large-scale heat-resistant steel ingots...
-
Article
Effect of Long-Term Thermal Aging at 680 °C on Microstructure and Mechanical Properties of P92 Steel
The stability of microstructure and performance after long-term service are crucial for the engineering application of ASME SA335-P92 steel. In this present work, a series of isothermal aging tests for P92 ste...
-
Article
Van der Waals integration of two-dimensional materials and bulk semiconductors for infrared photodetection technology
Van der Waals integration of two-dimensional (2D) materials and bulk semiconductors can combine their respective advantages, enabling multifunctional electronic and optoelectronic devices. Significant progress...
-
Article
Microstructure evolution and fracture mechanism of a Fe–Ni–Cr superalloy during various strain rates tensile deformation at elevated temperatures
The high-temperature deformation behavior and fracture mechanism of Fe–Ni-Cr superalloy under high strain rates from 1 to 100 s−1 were studied by hot tensile experiments at a temperature range of 900–1150 °C. The...
-
Article
An Organic Small Molecule as a Solid Additive in Non-Fullerene Organic Solar Cells with Improved Efficiency and Operational Stability
The use of additive is an effective approach to optimize the active layer morphology and improve the power conversion efficiency (PCE) of organic solar cells (OSCs). However, residual solvent additives always ...
-
Article
Properties of Plasma Electrolytic Oxidation Coatings Doped with SnSO4 on AZ91D Magnesium Alloys
The plasma electrolytic oxidation (PEO) coatings were prepared on AZ91D magnesium in silicate electrolytes containing SnSO4. The characterization of the coatings was investigated by scanning electron microscopy, ...
-
Article
Enhanced photocatalytic activity of rare earth (Yb, Nd and Ce)-doped g-C3N4 nanosheets for the degradation of organic dyes under visible light
g-C3N4 and rare earth (RE)-doped (Yb, Nd and Ce) g-C3N4 nanosheets were synthesized by a thermal method. The remarkable effects of RE do** on the structural, morphological, and optical properties of g-C3N4 were...
-
Article
High Strength Electrospun Single Copolyacrylonitrile (coPAN) Nanofibers with Improved Molecular Orientation by Drawing
High-performance carbon nanofibers are highly dependent on the performance of their precursors, especially polyacrylonitrile (PAN). In this work, the copolymer of PAN (coPAN) was synthesized for electrospinnin...
-
Article
A nickel foam modified with electrodeposited cobalt and phosphor for amperometric determination of dopamine
Considering the importance of dopamine (DA) detection for neuroscience and disease diagnosis, herein, an electrochemical sensor for dopamine is described. It is based on the use of a Ni-Co-P nanostructure fabr...
-
Chapter and Conference Paper
Research on the Carbothermic Reduction Procedure of SrSO4 with Carbon
of celestite is the first procedure of universal process for preparing SrCO3. However, only one species as SrS without SrO can be found in reduction product of SrSO4 by solid carbon at the below 1273 K, and ...
-
Article
Development of an MKIDs-Based THz Superconducting Imaging Array (TeSIA) at 0.85 THz
Dome A, the highest point of the cold and dry Antarctic ice sheet, offers the best access to atmospheric windows at THz/FIR wavelengths on Earth. China is planning to build a 5-m THz telescope (DATE5) there. T...
-
Article
Enolic Schiff Base Zinc Amide Complexes: Highly Active Catalysts for Ring-Opening Polymerization of Lactide and ε-Caprolactone
A series of zinc silylamido complexes based upon NNO tridentate enolic Schiff base framework have been synthesized and characterized. These complexes were tested for the ring opening polymerization of lactide and...
-
Article
Effect of Laser Shock Peening on Residual Stress, Microstructure and Hot Corrosion Behavior of Damage-Tolerant TC21 Titanium Alloy
The effect of laser shock peening (LSP) on the residual stress, microstructure and hot corrosion behavior of damage-tolerant TC21 alloy was investigated. The equilateral scanning pattern was adopted to obtain ...
-
Article
Forming mechanism of delamination cracks observed during tensile and fracture toughness testing of X70 pipeline steel
In this study, we have investigated microstructures of the delamination cracks observed from tensile and fracture toughness test specimens using an API X70 pipeline steel. It is found that the delaminations ob...
-
Article
Critical Evaluation of Prediction Models for Phosphorus Partition between CaO-based Slags and Iron-based Melts during Dephosphorization Processes
According to the experimental results of hot metal dephosphorization by CaO-based slags at a commercial-scale hot metal pretreatment station, the collected 16 models of equilibrium quotient
-
Article
Critical Assessment of P2O5 Activity Coefficients in CaO-based Slags during Dephosphorization Process of Iron-based Melts
According to the experimental results of hot metal dephosphorization by CaO-based slags at a commercial-scale hot metal pretreatment station, activity ...
-
Article
A Thermodynamic Model for Predicting Phosphorus Partition between CaO-based Slags and Hot Metal during Hot Metal Dephosphorization Pretreatment Process Based on the Ion and Molecule Coexistence Theory
A thermodynamic model for predicting phosphorus partition L P between a CaO-based slags and hot metal during hot metal dephosphorization pretreatment process has been developed based on th...
-
Article
Rapid fabrication of cylindrical microlens array by shaped femtosecond laser direct writing
In this study, a remarkable spatial sha** approach is proposed to transform Gaussian femtosecond laser into quasi-Bessel optical field with compressed central lobe and amplified side lobes of the spatial in...
-
Article
Synthesis and characterization of D-/L-methionine grafted PEDOTs for selective recognition of 3,4-dihydroxyphenylalanine enantiomers
Two pairs of amino-acid functionalized poly(3,4-ethylenedioxythiophene) (PEDOT) derivatives, namely, poly(N-(tert-butoxycarbonyl)-L-methionyl (3,4-ethylenedioxythiophene-2’-yl)methylamide) (L-PEDOT-Boc-Met) and p...
-
Article
Trichlorozirconium η 2-hydrazonides: Synthesis, characterization and their catalytic behavior toward ethylene polymerization
The trichlorozirconium η 2-hydrazonides (R=H, A; R=CH3, B) were synthesized through the finely controlled stoichiometrical reactions of anhydrous zirconium tetrachloride with the l...
