A5034348821- Advanced ceramic materials synthesis
- Metal and Thin Film Mechanics
- MXene and MAX Phase Materials
- Boron and Carbon Nanomaterials Research
- Advanced battery technologies research
- Electrocatalysts for Energy Conversion
- Silicone and Siloxane Chemistry
- Advanced materials and composites
- Tribology and Wear Analysis
- Advanced Antenna and Metasurface Technologies
- Corrosion Behavior and Inhibition
- Innovative concrete reinforcement materials
- Synthesis and properties of polymers
- Microbial Applications in Construction Materials
- Advanced Photocatalysis Techniques
- Polymer crystallization and properties
- Electromagnetic wave absorption materials
- Fuel Cells and Related Materials
- Electrical Contact Performance and Analysis
- Microwave Dielectric Ceramics Synthesis
- Polymer Nanocomposites and Properties
- Concrete and Cement Materials Research
Technical University of Darmstadt
2020-2024
South China University of Technology
2014
Institute of Molecular Functional Materials
2011
Abstract Polysilazane coatings have a broad need in real‐life applications, which require low processing or working temperature. In this work, five commercially available polysilazanes been spin‐coated on polycarbonate substrates and cured ambient environment temperature to obtain transparent, crack‐free, dense films. The degree of crosslinking is found significant impact the hardness Young's modulus polysilazane films but has minor influence film thickness hydrophobicity. Among all...
Abstract SiBN ceramics are widely considered to be the most promising material for microwave-transparent applications in harsh environments owing its excellent thermal stability and low dielectric constant. This work focuses on synthesis ceramization of single-source precursors preparation as well investigation corresponding microstructural evolution at high temperatures including molecular dynamic simulations. Carbon- chlorine-free perhydropolysilazanes were reacted with borane dimethyl...
A facile and eco-friendly strategy is presented for synthesizing novel nanocomposites, with MoP quantum dots (QDs) as cores graphitic carbon shells, these nanoparticles are dispersed in a nitrogen phosphorus-doped porous nanotubes (CNTs) substrates (MoP@NPC/CNT). The synthesis involves self-assembling reactions to form single-source precursors (SSPs), followed by pyrolysis at 900 °C an inert atmosphere obtain MoP@NPC/CNT-900. presence of layers on the QDs effectively prevents particle...
Cubic silicon nitride (γ-Si<sub>3</sub>N<sub>4</sub>) is superhard and one of the hardest materials after diamond cubic boron (cBN), but has higher thermal stability in an oxidizing environment than diamond, making it a competitive candidate for technological applications harsh conditions (e.g., drill head abrasives). Here, we report high-pressure synthesis characterization structural mechanical properties γ-Si<sub>3</sub>N<sub>4</sub>/Hf<sub>3</sub>N<sub>4</sub> ceramic nanocomposite...
Moisture curing of polysilazane coatings at room temperature is advantage to industrial applications, though it often takes a longer time than the other methods. To tackle this problem, tetrabutylammonium chloride (TBAC) applied in work as an efficient catalyst for hydrolysis and condensation reactions polymethyl(hydro)/polydimethylsilazane under ambient conditions. In suggested catalytic mechanism, Si–H group nucleophilically attacked by ions form transient Si–Cl group, which then...
Traditional PHC pile production adopts two-step curing with the disadvantages of high energy consumption, considerable carbon emissions, and easy cracking during construction. In addition, non-autoclaved pipe studies involve problems such as adoption naphthalene based superplasticizer lengthy coated duration, thus leading to their few applications. order solve problems, study on was conducted systematically impacts system, water-binder ratio, admixture composition concrete strength, ratio...
Amorphous Si 3 N 4 and SiBN monoliths without sintering additives are successfully prepared by high‐pressure–low‐temperature (HPLT) using the single‐source‐precursor‐derived amorphous powders as raw materials. The microstructural evolution crystallization behavior of as‐prepared samples investigated scanning electron transmission microscopy X‐ray powder diffraction, respectively. results show that incorporation boron in Si–N network enhances temperature up to 1200 °C. Vickers’ hardness...
Poly(arylene ether nitriles) (PEN) nanocomposites containing various functionalized multi-walled carbon nanotubes (MWCNTs) were prepared through solution-casting method. The as-prepared PEN nanocomoposites investigated by parallel-plate rheometer, aiming at examining the effect of surface functionalizaion on dispersion MWCNTs using viscoelastic properties. results linear viscoelasticy indicated that 4-aminophenoxyphthalonitrile-grafted (MWCNTs-CN) presented better in matrix than purified and...
Water‐splitting processes require advanced catalysts for the electrocatalytic hydrogen evolution reaction (HER) and oxygen (OER). A facile cost‐effective approach using single‐source precursors (SSPs) to prepare active durable bifunctional electrocatalysts consisting of core–shell structured transition metal phosphide (TMPs) nanoparticles dispersed immobilized in a highly defective N‐, P‐codoped carbon matrix. The bimetallic FeNi supported on is synthesized through pyrolysis at 900 °C under...
Cubic silicon nitride (γ-Si3N4) is superhard and the hardest material after diamond cubic boron (cBN), but has higher thermal stability than cBN, making it a competitive candidate for technological applications in harsh conditions (e.g. drill head, abrasive cutting tools). Here we report high-pressure synthesis characterization of structural mechanical properties γ-Si3N4/Hf3N4 ceramic nanocomposite derived from single-phase amorphous Si-Hf-N precursor. The Si3N4/Hf3N4 performed at ~20 GPa...