Poly (3-hexylthiophene) (P3HT) is one of the most attractive hole transport materials (HTMs) for pursuit stable, low-cost, and high-efficiency perovskite solar cells (PSCs). However, poor contact severe recombination at P3HT/perovskite interface lead to a low power conversion efficiency (PCE). Thus, we construct molecular bridge, 2-((7-(4-(bis(4-methoxyphenyl)amino)phenyl)-10-(2-(2-ethoxyethoxy)ethyl)-10H-phenoxazin-3-yl)methylene)malononitrile (MDN), whose malononitrile group can anchor...

While laser-assisted machining can significantly improve the machinability of nickel-based superalloy, mechanism surface integrity evolution and its influence on material functional performance is still not clear. The present study gives a comprehensive investigation milling (LAMill) process with an in-depth chip formation, microstructural mechanical alternations, supported by key outcomes from two constitutive processes, conventional (CMill) single laser scanning (LS). Although high thermal...

Residual stress has become more important than ever with the increasing performance requirement of components especially for those applied in safety-critical areas. As machining process is fundamentally correlated acquired component properties, it essential to fully understand formation mechanism residual stresses cutting and its influence on component. This paper presents results based numerical experimental analysis effect tool geometry thermal-mechanical load orthogonal Inconel718 alloy....

The in situ synthesis of a cross-linked polymer (Spiro-NPU) as an internal encapsulating layer (IEL) supports the development efficient, stable, repairable, and low-lead-leakage perovskite solar cells.

Gamma titanium-aluminum intermetallic compounds (γ-TiAl) have gained considerable attentions in the aerospace industry due to their exceptional thermal resilience and comprehensive attributes, making them a prime example of lightweight advanced materials. To address frequent occurrence burns severe tool deterioration during process high-efficiency deep grinding (HEDG) on γ-TiAl alloys, ultrasonic vibration-assisted (UVHEDG) has been emerged. Results indicate that UVHEDG, temperature is...

The undeformed chip thickness and grinding force are key parameters for revealing the material removal mechanism in process. However, they difficult to be well expressed due ununiformed protrusion height random position distribution of abrasive grains on wheel surface. This study investigated considering non-uniform characteristics K4002 nickel-based superalloy. First, a novel model was established through kinematic-geometric analysis grain-workpiece contact analysis. Then, series...

Machining operations are of key importance to the fatigue performance nickel based superalloys due high thermal/mechanical loadings yielded on machined workpiece which can significantly alter surface integrity components. Therefore, understanding influence mechanisms machining induced upon response is vital determine their manufacturing processes and applications. In this respect, paper investigates superalloy subject different mechanical thermal by various including conventional (e.g....

Micromachining repair of surface defects on KH2PO4 (KDP) optics is an emerging technique in the construction Inertial Confinement Fusion facilities for obtaining clean nuclear fusion energy. However, this method yet facing considerable challenges owing to soft-brittle nature single-crystal KDP, hence it necessary understand its ductile-regime cutting mechanism generate crack-free surfaces. This paper seeks investigate evolution different with change uncut chip thickness (UCT) KDP orthogonal...

Machining-induced residual stresses in a part can significantly influence its performance and service time. It is common that the final surface of produced after multiple cuts machining process. In cuts, previous could often generate accumulated strain/stress temperature on surface. These will be brought to subsequent cut or continuously affect cutting forces, process temperatures, deformation zones, etc. cut, eventually part. This paper reports joint experimental numerical investigation...

Shear-based material removal processes significantly influence the quality of workpiece surface and implicitly component functional performance. An in-situ SEM nano-cutting enabled study crystal flow lattice rotation occurring below cutting edge in a polycrystalline Nickel superalloy. When within single grains deformed nanolayer appears that consists rotated exclusively plane which is delimited from bulk grain by high angle boundary (HAB); depth increases with pile-up (nano-chip) caused...

Abstract Segmented chip morphology has a significant influence on distribution of residual stress and surface topography machined in machining difficult-to-cut materials. In this paper, Coupled Eulerian Lagrangian (CEL) model is employed to investigate the effect segmented integrity (residual topography) orthogonal Inconel718 with uncoated carbide inserts. A mesh sensitivity study performed by developing following three different grid resolutions: coarse (mesh size 35 μm), medium (10 μm)...

Abrasive waterjet peening (AWJP) is a new mechanical surface treatment where particles are delivered by to induce plastic deformation and achieve strengthening effects on workpiece. Although fatigue strength can be improved inducing compressive residual stress, the prediction of stress distribution remains challenging because particle–workpiece interaction occurs with randomicity, superposition, overlapping. In this paper, theoretical model proposed for predicting workpiece analysing i)...

Thin-walled workpieces are largely manufactured in the aerospace industry. The manufacturing process has been a problem due to its flexibility, and chatter vibrations apt occur, which restricts machining efficiency quality. A vibration suppression device for thin-walled is presented based on electromagnetic induction principle, utilizes generate resistant force workpiece. formulated varies with workpiece velocity, but an opposite direction. Excitation tests using shaker illustrate that...

It is essential for superalloys (e.g., Inconel 718) to obtain an anticipated surface integrity after machining, especially safety critical areas aerospace). As one of the main characteristics cutting tools, rake angle has been recognized as a key factor that can significantly influence machining process. Although there are large research interests and outcomes in nickel-based superalloys, most them focus on macroscale temperature observation, whereas distribution tool face not clear. Thus,...