Limin He
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View article: Effects of europium doping on thermal property and failure behaviour of Gd2Zr2O7 thermal barrier coatings
Effects of europium doping on thermal property and failure behaviour of Gd2Zr2O7 thermal barrier coatings Open
This work concentrates on the phase, composition, thermo-physical properties, microstructure, service lifetime, and failure behaviour of GdEuZrO/YSZ thermal barrier coatings fabricated via electron beam-physical vapor deposition. The therm…
View article: Systematic Reward Gap Optimization for Mitigating VLM Hallucinations
Systematic Reward Gap Optimization for Mitigating VLM Hallucinations Open
The success of Direct Preference Optimization (DPO) in mitigating hallucinations in Vision Language Models (VLMs) critically hinges on the true reward gaps within preference pairs. However, current methods, typically relying on ranking or …
View article: Thermal shock behavior of EB-PVD thermal barrier coatings based on YSZ ceramic coat and (Ni, Pt)Al metallic bond coat
Thermal shock behavior of EB-PVD thermal barrier coatings based on YSZ ceramic coat and (Ni, Pt)Al metallic bond coat Open
Three different chemical vapor deposition (CVD) aluminizing processes were adopted for preparing of (Ni, Pt)Al metallic coatings, whose microstructure, element content, phase constituent and gas hot corrosion performance were evaluated and…
View article: Dynamics Analysis of Droplets Collision with the Wall Driven by Buoyancy
Dynamics Analysis of Droplets Collision with the Wall Driven by Buoyancy Open
Dynamics analysis of the oil droplet in water impacting on a rigid wall in the range of Re=9.3 ∼ 231.39, We=0.003 ∼ 0.637 was carried out by combining microscopic experiment with theoretical study. In the oil droplet’s force equation, we c…
View article: Dy doped Gd2Zr2O7 thermal barrier coatings: Thermal expansion coefficient, microstructure and failure mechanism
Dy doped Gd2Zr2O7 thermal barrier coatings: Thermal expansion coefficient, microstructure and failure mechanism Open
Thermal barrier coatings (TBCs) are of great interest in increasing the service temperature and improving the efficiency of aircraft engine. In this study, the GdDyZrO and YSZ were deposited by electron beam-physical vapor deposition. The …
View article: Study on the Effect of Nanoparticle Used in Nano-Fluid Flooding on Droplet–Interface Electro-Coalescence
Study on the Effect of Nanoparticle Used in Nano-Fluid Flooding on Droplet–Interface Electro-Coalescence Open
Nano-fluid flooding is a new method capable of improving oil recovery; however, nanoparticles (NPs) significantly affect electric dehydration, which has rarely been investigated. The effect of silica (SiO2) NPs on the droplet–interface coa…
View article: Numerical Simulation and Experimental Analysis of the Influence of Asymmetric Pressure Conditions on the Splitting of a Gas-Liquid Two-Phase Flow at a T-Junction
Numerical Simulation and Experimental Analysis of the Influence of Asymmetric Pressure Conditions on the Splitting of a Gas-Liquid Two-Phase Flow at a T-Junction Open
Dedicated experiments and numerical simulations have been conducted to investigate the splitting characteristics of a gas-liquid two phase flow at a T junction. The experiments were carried out for different gas-liquid velocities. The flow…
View article: Optimization of acoustic parameters for ultrasonic separation of emulsions with different physical properties
Optimization of acoustic parameters for ultrasonic separation of emulsions with different physical properties Open
Ultrasound is an emerging and promising method for demulsification, which is highly affected by acoustic parameters and emulsion properties. Herein, a series of microscopic and dehydration experiments are carried out to investigate the par…