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 7 of 7 for “"LCVD"”.
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An investigation of the temperature distribution induced during laser chemical vapor deposition (LCVD) of titanium nitride on titanium-aluminum-vanadium
… formed using laser chemical vapor deposition (LCVD), spatially resolved multi-wavelength pyrometry measurements of the substrate temperature have been made during LCVD of titanium nitride (TiN) on Ti-6Al-4V substrates. The precursors that have been used are TiCl$\sb4,$ N$\sb2,$ and H$\sb2.$ …
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Precursor gas comparison for the growth of silicon carbide fibers via laser chemical vapor deposition
Laser chemical vapor deposition (LCVD) is a processing technique that can be used to grow fibers. In this study, the relationships between deposited SiC fiber composition, fiber microstructure, and fiber mechanical properties (ambient temperature failure stress in tension) were compared using two …
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Processing and deformation studies in high temperature ceramics
… pressure-laser chemical vapor deposition (HP-LCVD) method in which a laser is used to deposit a fiber directly from the vapor phase. Then, the topic of HP-LCVD will be explored further by a study in the phase and microstructure stability of tetramethylsilane derived fibers under an array of …
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Fundamental Mechanisms of Photo-Stimulated Surface Reactions During Laser-Induced and Laser-Assisted Crystal Growth
… are: laser-induced chemical vapor deposition (LCVD), laser-assisted low-pressure chemical vapor deposition (LA-LPCVD), and laser-induced primary-ion deposition.
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Laser Chemical Vapor Deposition of Titanium Nitride and Process Diagnostics With Laser-Induced Fluorescence Spectroscopy
… a cw CO$\sb2$ laser chemical vapor deposition (LCVD) process with TiCl$\sb4$, H$\sb2$, and N$\sb2$. Pulsed dye laser induced fluorescence (LIF) spectroscopy is used to obtain transient gas phase Ti atomic concentration above the substrate. Multi-wavelength pyrometry is applied to measure the …
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Understanding the Impact of Nuclear Environment on the Hydrothermal Corrosion in SIC
… with Rapid Laser chemical vapor deposition (R-LCVD) with varying surface chemistries were also obtained through experiments performed in static autoclave simulating PWR conditions. The hydrothermal corrosion behavior of stoichiometric R-LCVD fibers was observed to be comparable to the nuclear …
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High speed mask-less laser-controlled precision micro-additive manufacture
A rapid, mask-less deposition technique for writing metal tracks has been developed. The technique was based on laser-induced chemical vapour deposition. The novelty in the technique was the usage of pulsed ultrafast lasers instead of continuous wave lasers in pyrolytic dissociation of the chemical …