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Showing 1 to 20 of 60 for “"sintering process"”.
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The kinetics of the sintering process
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Metallurgy, 1947.
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Finite element analysis of curl development in the selective laser sintering process
Selective laser sintering (SLS) is a rapid prototyping process, which operates by using a laser to locally heat an area within a layer of powder material, causing it to fuse together, creating a thin cross-section of solid material. 3D shapes are built by repeatedly depositing a layer of fresh …
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Modelling of the powder sintering process and relative thermal conductivity variation during the electron beam powder bed fusion (PBF-EB)
L'abstract è presente nell'allegato / the abstract is in the attachment
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Low Pressure and Short-Time Silver-Sintering for Power Modules
Silver-sintering has become one of the main chip interconnect technologies in wide bandgap (WBG) semiconductor power modules due to its excellent thermal conductivity, high temperature stability and mechanical reliability. However, the traditional silver sintering process generally has the problems …
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Slurry preparation of zeolite and metal - organic framework for extrusion based 3D – printing
… of materials from metal to ceramics. In this process, the required material is extruded from the extruder in the form of a slurry. Zeolite and MOFs are mainly used for CO2 adsorption in the form of pellets and beads due to their good adsorptive property. Researchers are developing monoliths of …
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Tissue Engineering Cartilage with a Composite Electrospun and Hydrogel Scaffold
… material. Electrospun cylinders were created by sintering electrospun mats that include salt pores. The addition of salt pores decreased the mechanical properties of the electrospun materials while also improving the capability of cells to infiltrate into the scaffold. The sintering process …
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Centrifuge-aided Micromolding and Sintering of Micron- and Submicron-sized Ceramic Features
… the miniaturization of devices. Micromolding and sintering play critical roles in fabricating micron- and submicron-sized ceramic features using nanoparticles. Developed from soft lithography, replica molding has been proven a good method to prepare micron- and submicron-sized features. However, …
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Thermoreflectance for Contactless Sintering Characterization: From Metal Nanoparticles to Stretchable Conductors
Sintering metal nanoparticles is a crucial step to achieve printed conductors. It is important to characterize and monitor nanoparticle sintering for process optimization and control. Here, we demonstrate that frequency-domain thermoreflectance (FDTR), an optical pump-probe technique, can be used …
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The influence of process route on mechanical property development in sintered commercially pure and blended elemental titanium
This work focuses on optimizing the sintering process of Ti-6Al-4V using Al-V master alloy powder to achieve a cost efficient product with acceptable mechanical properties. Reference was also made to Ti-6Al-4V products produced by Clinning (University of Cape Town 2012) using elemental Al and V …
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Sintering of small particles
An atomistic approach to modeling the sintering of nanocrystalline alloys has been developed. It has been shown that there exist alloys that exhibit both nanostructured stability and undergo an accelerated sintering process [1], [2]. However, the widespread adoption of such alloys has been limited …
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OVERCOMING THE LIMITATIONS OF TISSUE ENGINEERED SCAFFOLDS FOR DENTAL ROOT REPAIR
… work confirmed that the high temperatures of the sintering process sufficiently sterilized the scaffolds to allow their immediate clinical use from sterile containers. The presence of an interconnectivity channel system via burn out of porous polypropylene oxygenator membranes allows for proper …
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Effect of rigid crystals on the experimental sintering of rhyolitic ash under shallow conduit conditions
… investigation of surface tension-driven sintering and associated densification of crystal-bearing rhyolitic ash under shallow volcanic conduit conditions. Suites of isobaric (40 MPa) experiments were held at a constant temperature of 675 to 850 °C for durations of 30 minutes to 9 hours. A …
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Die-level glass frit vacuum packaging for a micro-fuel processor system
… is investigated for the use with a micro-fuel processor. Enhanced device performance through proper thermal management motivates the need for a vacuum package on the micro scale. Constraints imposed by the design and fabrication of the micro-fuel processor deem glass frit bonding as the optimal …
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Structure and Processing Relations in Ni-W Amorphous Particle Strengthened Ni Matrix Composites
… bonding between them. It is believed that the sintering process was compromised by contamination from organic vapor present in the tube furnace used. While attritor milling effected smaller reinforcement particles, the small increase in aspect ratio would likely have been insufficient to cause …
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Processability of Nickel-Boron Nanolayer Coated Boron Carbide
This dissertation work focuses on the processability improvement of B4C, especially the compaction and sintering improvement of B4C by applying a Ni-B nanolayer coating on individual B4C particles. A modified electroless coating procedure was proposed and employed to coat nanometer Ni-B layer onto …
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Production of a nanostructured copper by Spark Plasma Sintering
… of a nanostructured copper by Spark Plasma Sintering. The nanostructured powder was produced by cryomilling an atomized powder, using a ball-to-powder ratio of 30:1 for 8h; it has a mean grain size of 19±2 nm and shows quite a high thermal stability, as shown by a DSC investigation. The …
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Parametric analysis of part suitability in Additive Manufacturing
… single parts. Although many of the prominent processes were invented 20-30 years ago, we are now seeing rapid performance improvement and the synthesis of innovative processes that greatly expand the applications of AM. That being said, there are significant barriers to entry, one being the …
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Development of filled polymers for the replacement of ceramics used as ballistic protection layer
… plates are commonly manufactured through a sintering process, where ceramic powders are pressed at high temperatures. This manufacturing process tends to limit the size and shape of components and imparts high costs. On the other hand, moulding using a polymer matrix composite provides an …
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DEVELOPMENT OF COST EFFECTIVE NANOSTRUCTURAL REINFORCEMENTS FOR ADVANCED COMPOSITES
… for multiple applications. The main process in this study is mechanical milling which induce the in-situ transformation of carbon in the form of soot into complex nanostructures that behave as effective reinforcements. The soot mainly composed of amorphous particles with a high …
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Economic and technological advantages of using high speed sintering as a rapid manufacturing alternative in footwear applications
… rapid manufacturing technology, Selective Laser Sintering, only allows for a point-by-point sintering process to construct the 3D representations of CAD models. This makes for long processing periods and is ineffective for high volume manufacturing. However, a new process called high-speed …
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