Influence of Al2O3 content on microstructure, electrical conductivity and adhesion strength of cold sprayed Al-Al2O3 coatings on PEEK substrate

Surface and Coatings Technology, Год журнала: 2022, Номер 446, С. 128752 - 128752

Опубликована: Авг. 1, 2022

Язык: Английский

---

Cold spray-based rapid and scalable production of printed flexible electronics

Additive manufacturing, Год журнала: 2022, Номер 60, С. 103244 - 103244

Опубликована: Ноя. 2, 2022

Язык: Английский

---

Machinability improvement in micro milling AlN after laser chemical milling

Chinese Journal of Aeronautics, Год журнала: 2024, Номер unknown

Опубликована: Июнь 1, 2024

Processing microchannels inside laminated aluminum nitride high-temperature co-fired ceramics (AlN HTCC) packaging, a typical difficult-to-cut ceramic, can effectively solve the heat-dissipation problem of integrated chips used in smart skin. In order to improve processing efficiency and quality AlN, machinability AlN after laser chemical milling (LCM) was studied through force, machined surface quality, defects, formation mechanism, tool wear. This study established force model that predict forces analyses reasons for improvements based on experimental data predicted data. The results from experiments demonstrated assisted micro (LCAMM) decreased by 85%–90% 85%–95%, respectively, due amount removal single edge more uniform actual inclination angle increased during cutting process LCAMM. Moreover, improved 65%–76% LCM because less wear, fewer downward-propagating cracks generated each feed, mode transformed intergranular fracture transgranular fracture, which reducing wear improving life. Finally, when feed per tooth depth cut were 0.4 μm/z 5 μm, optimal obtained, with roughness 64.6 nm Therefore, providing feasibility high-quality efficient machining microchannels.

Язык: Английский

---

Manufacturing and cold spraying of hybrid composites — A path for metallizing thermoset matrix composites

Surface and Coatings Technology, Год журнала: 2024, Номер 489, С. 131144 - 131144

Опубликована: Июль 22, 2024

This study aims to realize and metallize the hybrid thermoset-thermoplastic fiber reinforced composites for aerospace applications. Two variations in manufacturing route including cocuring interlayer were adopted realizing RTM6-PEI-CF composite. Low pressure cold spray metallization technique is applied by varying processing parameters stand-off distance traverse speed. Microstructural analysis mechanical tests (roughness check, nanoindentation tests) performed on sprayed composites. Overall, routes affected inherent structure of composite subsequent coating quality. Mechanical interlocking induced close contact PEI-aluminum (Al) particles characterized into uniform with surface morphology variation shown cocured Coating adhesion strength increment up 18 MPa was noted using PEI-carbon (CF) semi-preg manufacturing. The tomography scan highlighted structural integrity manufactured coated composites, revealing coating-thermoplastic contact, interphase, porosity inter-tow region. An increase speed 2 mm/s reduced electrical conductivity Within limits this investigation, opting lower (here, 10 mm 1 mm/s) reflected improved approximately 1.5 thickness.

Язык: Английский

---

Optimization of Microstructure and Mechanical Properties of 2219 Al Alloy Cold-Sprayed Coating by Heat Treatment

Journal of Thermal Spray Technology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 3, 2025

Язык: Английский

---