A5088347516- Corrosion Behavior and Inhibition
- Concrete Corrosion and Durability
- Hydrogen embrittlement and corrosion behaviors in metals
- Lubricants and Their Additives
- Electrodeposition and Electroless Coatings
- Thin-Film Transistor Technologies
- Gyrotron and Vacuum Electronics Research
- Photovoltaic System Optimization Techniques
- Welding Techniques and Residual Stresses
- Structural Behavior of Reinforced Concrete
- Silicon and Solar Cell Technologies
- Material Properties and Failure Mechanisms
- Microwave Engineering and Waveguides
- Acoustic Wave Resonator Technologies
Beijing Solar Energy Research Institute
2023
University of Science and Technology Beijing
1993-2013
University of Stuttgart
2008-2012
Silicon heterojunction (SHJ) solar cells are renowned for their high efficiency. However, SHJ susceptible to various contaminants, leading significant performance degradation when exposed damp-heat conditions (e.g., 85 °C and 85% relative humidity). Sodium (Na) has been identified as one of the main contributors in silicon modules subjected conditions. This work investigates role an ultra-thin AlOx capping layer (∼10 nm) preventing failure caused by Na-related contaminants. NaCl is applied...
Abstract Experience with prestressed concrete over about half a century has indicated that the corrosion resistance of conventional prestressing steel does not always satisfy, especially steels are susceptible to chloride attack (de‐icing salts) and hydrogen (hydrogen‐induced stress cracking). On other hand agents, such as chloride, condensation water, can penetrate in arrive at surface steels. Hence, damage happen and, extreme cases, structure collapsed resulting from failure tendon. In...
Abstract This paper summarises the state of art in application stainless steel concrete structures as well fastening technique. Fabrication and civil engineering has been undergoing development for many years. Today this material is available different alloy compositions an excellent long‐time resistivity natural environments contact with wet construction materials, which offer a technically attractive also economical approach engineering, primarily corrosion endangered bearing elements. The...
This paper presents the results of design and testing seven-pole BPF Ka band with bilateral HTS insert in E-plane rectangular waveguide. Study possibility reducing insertion loss filters inserts compared losses normal metal is a purpose work. single crystal MgO substrate 0.5 mm thickness, which two surfaces are coated superconducting YBCO films. By photolithography method, identical portions layers were removed on both sides thereby "window" chains formed height equal to standard waveguide...
Abstract Although so many researchers paid attention on stress corrosion mechanism of titanium/ethanol system, few papers explained why ethanol, a very weak corrosive mediator, caused severe anodic solution. We found that the polarization process system produced lots acetic acid, which pH value decreased rapidly. Maybe acid was direct reason susceptibility titanium alloy in ethanol. And SSR tests proved could accelerate SCC this seriously. Also we when specimen yield region, its potential...
Abstract Die Werkstoffe Nr. 1.4301, 1.4571, 1.4439 und 1.4558 wurden bei Raumtemperatur in kalter Salzsäure (c(Cl − ) = 1,5 mol/L c(H + 1 mol/L, vereinzelt auch 0,1 0,01 mol/L) untersucht. Potentiostatische Halteversuche ergeben Daten für aktive Korrosion, Passivität Lochkorrosion. CERT‐Versuche (10 −6 s −1 , 2 · 10 −7 freier Korrosion zeigten eine Überlagerung zwischen transkristallinem Angriff gleichförmigem Flächenabtrag, wobei das Ruhepotential verhältnismäßig negativen Potentialen im...
Electroless nickel coatings cause a marked decrease in the fatigue strength of base steel. For 30CrMo4 steel used present work, limit is reduced by electroless deposition 39, 52, and 55% for heat treatment conditions 200°C 1 h, 400°C 600°C 3 respectively. Shot peening before can increase material treated at 200 400°C, but reduces 600°C. Under all conditions, loss primarily due to poor properties coating weak interface between substrate. The main factors which affect coated samples are...
Abstract An sechs verschiedenen niedriglegierten Stählen wurden in Ca(NO 3 ) 2 ‐ und NaNO ‐Lösungen die J(U)‐Kurven mit Hilfe potentiostatischer Wechsel‐ Halteversuche gemessen. Die instationären Kurven sind stark von der Polarisationsroutine abhängig kennzeichnen nicht das anodische Verhalten Werkstoffe. Messungen zeigen keine Korrelation dem gegenüber Spannungsrißkorrosion. In den Verhältnisse ähnlich. Im Gegensatz zu kann aber bei mittleren Potentialwerten um U H = 0,5 V ein...
Electroless nickel coatings cause a marked decrease in the fatigue strength of base steel. For 30CrMo4 steel used present work, limit is reduced by electroless deposition 39, 52, and 55% for heat treatment conditions 200°C 1 h, 400°C 600°C 3 respectively. Shot peening before can increase material treated at 200 400°C, but reduces 600°C. Under all conditions, loss primarily due to poor properties coating weak interface between substrate. The main factors which affect coated samples are...