2.2Directed energy deposition (DED) technique Using an intricate printing method calleddirected energy deposition, old components can often be repaired or given a material boost [16]. The structure can be managed greatly during energy deposition, producing high-quality objects. Although the nozzle isn...
所谓直接能量沉积3D打印-DED技术(Direct energy deposition),是指由激光在沉积区域产生熔池并高速移动,材料以粉末或丝状直接送入高温熔区,熔化后逐层积的一种激光直接能量沉积增材制造技术。该技术囊括激光、等离子、电子束几种不同的热源,材料包括粉末或丝状两种主要的形态。旗下技术类型可分为LENS激光工程网状透镜(La...
a multi-scale model that integrates a macro-scale transient three-dimensional mass and heat transfer model and a micro-scale thin-interface phase-field model is developed to simulate the solidification behavior of the molten pool and the dendritic growth behavior for direct energy deposition process....
aThe schematic diagram of “two-step” synthesis of graphene from CO2.bCell voltages at a constant current density of 30 mA cm−2in pneumatic-trough-based cell and H-type cell with/without Nafion 117 membrane. The area of the electrode is ~1 cm2. The “overflow” represents the ...
Predicting the melt pool temperature distribution and history in direct energy deposition (DED) is crucial for estimating the microstructure, porosity, and mechanical properties of DED-fabricated metal parts. While analytical and numerical modeling methods have been introduced to predict the melt pool tem...
Moreover, by plugging the solution properties and process parameters into our assembly model (Supplementary Table 3), we established a numerical prediction diagram for the formation of 2D nano-nets. The critical formation thresholds for jets and droplets using various substrates were calculated, and ...
the forced water-cooling was conducted on a single-crystal René N5 substrate during the direct energy deposition (DED).The single track remelting,one-layer,two-layer,and eight-layer depositions were investigated to explore the grain growth mechanism.The solidification conditions of the DED process,...
electrophoretic deposition; solid oxide fuel cell; thin-film electrolyte membrane; anode-supported cell; doped CeO2; doped BaCeO3; deposition kinetics; sintering kinetics; densification1. Introduction Electrochemical energy devices such as solid oxide fuel cells (SOFCs) have attracted many efforts of ...
Figure 6andFigure 7show the experimental system diagram and actual photo of the DASC for thermal storage performance. A 1000 W halogen lamp was used as the light source to simulate sunlight. There are some differences in the spectrum of halogen lamps and sunlight, and this issue will be discu...
3d打印领域的话，翻译成直接能量沉积挺常见的。