نتایج جستجو برای: hot isostatic pressing
تعداد نتایج: 92653 فیلتر نتایج به سال:
We demonstrate that cold and hot isostatic pressing (CIP and HIP) is a novel, alternative method for organic semiconductor layer fabrication, where organic powder is compressed into a layer shape directly on a substrate with 200 MPa pressure. Spatial gaps between powder particles and the other particles, substrates, or electrodes are crushed after CIP and HIP, making it possible to operate orga...
Large increases in the upper critical field B(C2)(0) are reported in bulk superconductors that demonstrate another novel property for nanocrystalline materials. Disordered nanocrystalline PbMo6S8 superconductors were fabricated by mechanical milling and hot isostatic pressing. Conventional PbMo6S8 has B(C2)(0) approximately 50 T. The nanocrystalline materials have higher resistivity (rho(N)) an...
The microstructure with homogeneously distributed grains and less prior particle boundary (PPB) precipitates is always desired for powder metallurgy superalloys after hot isostatic pressing (HIPping). In this work, we studied the effects of HIPping parameters, temperature and pressure on the grain structure in PM superalloy FGH96, by means of scanning electron microscope (SEM), electron backsca...
This study investigated the influence of surface roughness and cyclic loading on fatigue resistance in Y-TZP subjected to hot isostatic pressing (HIP). Fifty Y-TZP cylinders 3.0 mm in diameter were divided into Group A (polished by centerless method; TZP-CP) or Group B (blasted and acid-etched: TZP-SB150E). Twenty five cp-titanium cylinders (Ti-SB150E) were used as a control. Static and cyclic ...
is considered to be an important conductor for applications. Optimizing flux pinning in these conductors can improve their critical currents. Doping can influence flux pinning efficiency and grain connectivity, and also affect the resistivity, upper critical field and critical temperature. This study was designed to attempt the doping of on the Mg sites with metal-diborides using high-energy ba...
Dynamic observations of deformation in an ultrafine-grained Al–Mg alloy with bimodal grain structure
The tensile properties and deformation response of an ultrafine-grained (UFG) Al–Mg alloy with bimodal grain structure were investigated using a micro-straining unit and a strain mapping technique. Atomized Al 5083 powder was ball-milled in liquid N2 to obtain a nanocrystalline (NC) structure, then blended with 50 wt.% unmilled coarse-grained (CG) powder, and consolidated to produce a bimodal g...
The influence of an integrated hot isostatic pressing (HIP) treatment was investigated for two single-crystalline nickel-based superalloys under very high cycle fatigue at 1000 °C in fully reversed conditions (R? = ? 1). life is improved significantly by performing heat-treatments within the HIP unit. HIP-compacted pore morphology and its impact on crack initiation considered as well. HIPed spe...
Hot corrosion is a critical problem in wide range of high-temperature applications. Ni–20Cr alloy frequently used such applications owing to its good hot-corrosion resistance. In the current work, thick plates thickness 6–10 mm were fabricated using cold spray-based additive manufacturing (CSAM). High-pressure spraying was with nitrogen as propellant gas. Pre- (substrate heating, SH) and post-h...
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