Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 1804 for “"Powder"”.
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Production of bleaching powder by the fluidized powder technique.
Thesis: B.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1945
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Study of nickel-plated iron powder for powder metallurgical applications.
The use of coated iron-nickel powders in the production of sintered components of low-alloy steels has certain advantages over blended mixtures of the elemental powders. In particular, the former produce a more homogeneous material after a specific sintering treatment.There is a limited amount of …
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Coarse powder metallurgy.
Thesis: B.S., Massachusetts Institute of Technology, Department of Metallurgy, 1966
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Electrostatic powder deposition as a dry powder process to prepare orodispersible films
… or during drying. More recently, electrostatic powder coating has been adapted as a dry powder process for coating pharmaceutical dosage forms, such as tablets and pellets. Electrostatic powder coating is advantageous as it eliminates the need for solvents and exhibits greater transfer …
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Experiments on powder metals
… for cold compaction of ANCOR MH-100 iron powder. A systematic experimental program consisting of triaxial compression, torsion ring shear, uniaxial strain compression, and simple compression test systems has been conducted to investigate the room temperature deformation response of powders …
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Designing & Manufacturing Powder Skis
… this project was to build a pair of functional powder skis as well as test and compare the skis to professionally made ones. I began by doing research into the aspects of different types of skis and how they affect skiing. From there I designed the shape and looked into the layering and material …
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Using Displacement Sensors to Characterize Critical Powder Layers in Laser Powder Bed Fusion
… quality tools are still undeveloped. Uniform powder layers are critical to the final part quality for such processes, and currently, no machine can provide objective evidence of a proper powder layer with in-process monitoring equipment. In this project, proper powder layers are currently …
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Characterization of aluminum powder ignition
… size effect on ignition temperature of Al powder were studied to collect data for development of a possible Al powder ignition model. Aluminum ignition is associated with a highly accelerated burn rate and high combustion enthalpy. A new ignition model, which can adequately interpret these …
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Characterization of Powder Metallurgy Lightweight Alloys
… has seen a steady increase in the amount of powder metallurgy products that have been included in modern vehicles. The majority of the parts were cold press and sintered products that allowed for a high production volume and low cost option. In more recent years, the powder metallurgy parts …
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Coal carbonization under fluidized powder conditions
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Chemical Engineering, 1945.
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Characterization and Improvement of Powder Properties Through Plasma Spheroidization for use in the Laser Powder Bed Fusion Process
… research was conducted to characterize the powder properties using different characterization techniques to enhance the powder behavior in the Laser Powder Bed Fusion (LPBF) process. One of the shortcomings of LPBF process is the high cost of gas-atomized powder feedstock. To overcome this …
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Dry mixing of spice powders - investigation of effect of powder properties on mixture quality of binary powder mixtures
Dry mixing of binary food powders was conducted in a 2L lab-scale paddle mixer. Different types of food powders such as paprika, oregano, black pepper, onion powder and salt were used for the studies. A novel method based on a digital colour imaging system (DCI) was developed to measure the mixture …
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Optical In-Process Monitoring Tools for Laser Powder Bed Fusion: Verifying Powder Area Coverage of a Layer Setup
… suitable for quantifying a layer setup through powder area coverage. Several tests were performed to look at the camera repeatability across one or several locations by analyzing image intensity values in ImageJ. Another test was performed to determine if there was a linear correlation between …
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Development of Anti-corrosive Polyester Powder Coatings
Powder coatings are green solutions to replace the environmentally unfriendly liquid paints for anti-corrosive purpose. In this study, UV-resistant polyester/TGIC powder coatings for outdoor application were developed instead of the widely used epoxy-based coatings. Three types of additives and …
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Processing of nano-sized boron carbide powder
Recent studies indicate B4C nanopowder may provide additional advantages without loss of established properties. In this study, preliminary forms of graphite-coated B4C nanopowders on the order of 20-40 nm with various additives were sintered and analyzed. Methanol washing was performed on the …
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Thermomechanical modelling of powder compaction and sintering
… model for cold forming of ceramic powders and subsequent sintering is introduced and based on micromechanical modelling of the compaction process of granulates. Micromechanics is shown to yield an upper-bound estimate to the compaction curve of a granular material, which compares …
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