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 11 of 11 for “"inert environment"”.
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Hybrid Two Dimensional Quantum Devices
… analyzing sensitive 2D materials outside of an inert environment. When working with van der Waals materials that are especially sensitive to oxygen or water, it can be difficult to identify usable thin flakes without exposing them to air. To help preserve materials for analysis in air, a capsule …
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Fatigue crack growth in hydrogen pipeline steels
… is compared with the life of the line pipe in an inert environment (e.g. natural gas or N2) under the same pressure fluctuations. The hydrogen or the inert environment pressure history is analyzed with the rainflow counting method and the crack depth calculations are carried out for a variety of …
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Evaluation of Tungsten Hexachloride as a ROMP Active Catalyst Precursor for Self -Healing Polymers
… exposure. At both 121 and 177°C in an inert environment, the WCl6 retained sufficient activity for use as a ROMP precursor for self-healing applications. Mechanical evaluation through fracture experiments showed healing efficiencies as high as 92% if the processing and testing …
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Single layer graphene as a stable and transparent electrode for the measurement of non-aqueous electrogenerated chemiluminescence and charge transfer inverse photoemission
… and 9,10-diphenylanthracene in an inert environment to generate stable electrochemical responses and measure light emission through the material. SLG displayed excellent stability during electrochemical potential stepping and voltammetry in a window that spanned at least from -2.4 V …
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Steam oxidation of FeCrAl coated Zircaloy-2
… (YSZ) samples were oxidized in an argon/steam environment at 700 C and 1100 C. FeCrAl coated Zircaloy-2 was also heated to 1200 C in an inert environment. Real-time thermo gravimetric analysis (TGA) and DSC data was taken during the steam oxidation. Glancing angle and 2 theta-omega X-ray di …
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Quantifying the adhesion of noble metal foulants on structural materials in a Molten Salt Reactor
… the sputter polished substrates into a dry, inert environment where the force adhesion measurements were made. Data acquired in the last phase of the study partially demonstrated the concept. The measured particle-to-substrate attractive forces found antimony and tellurium to be generally …
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Fabrication and Characterization of Aluminum Nano-Carbon Composites and Investigation of Their Electrical Conductivity
… activated carbon particles in an enclosed inert environment. The high current density first facilitates ionization of the carbon atoms and migration of the carbon ions similar to “electromigration in metals”. Then, the current further induces polymerization and formation of graphitic chains …
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Lab-scale fast-hydropyrolysis and vapor-phase catalytic hydrodeoxygenation for producing liquid fuel range hydrocarbons from intact biomass
… where biomass is rapidly heated in a hydrogen environment to produce fast-hydropyrolysis vapors that are catalytically upgraded in downstream hydrodeoxygenation (HDO) to produce hydrocarbons. This process has been modeled to have high carbon and energy efficiencies of ~70% and ~75%, …
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Development of a constant-volume combustion apparatus for fuels research
… development of the high pressure and temperature environment was to be achieved using a pre-charge combustion event as opposed to electrical heating. The combustion of a lean mixture of flammable gas resulted in the desired conditions being developed rapidly, avoiding the material strength …
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Multiphysics Model of Hypervelocity Impact and Impact Induced Plasma Formation
… exoatmospheric applications, where the ambient environment is typically assumed to be vacuum. For example, satellite-chondrite collisions often exceed impact velocities of 7 km/s, justifying this assumption. However, such simplifications are no longer valid for terrestrial or atmospheric …
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Torrefaction and Steam Explosion of Selected Biomass for Biofuel Production
… retention times of 5 min, 7 min, and 9 min in an inert environment. Torrefaction pretreatment is a mild form of pyrolysis that has the potential to produce high-quality raw material for making biofuel that serves as a replacement for coal in the bioenergy industry. The torrefaction process …