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 “"Corrosion kinetics"”.
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High temperature alkali corrosion kinetics of low expansion ceramics
The gaseous alkali corrosion kinetics of silicon carbide, silicon nitride, alumina, mullite, cordierite, transformation toughened zirconia, and aluminum titanate were systematically investigated from 950°C to 1100°C in dry air containing 1.0 +/- 0.1 vol% alkali. The linear reaction rates observed …
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In situ Nanoscale Quantification of Corrosion Kinetics by Quantitative Phase Microscopy
Corrosion-related degradation incurs a significant cost to infrastructure and society. In 2016, the direct corrosion cost was estimated at $276 billion, which is 3.1% of the U.S. gross domestic product. Despite the known consequences of corrosion damage, many unknowns still exist, such as the …
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The effect of Niobium on the defect chemistry and corrosion kinetics of tetragonal ZrO₂ : a density functional theory study
… effort to determine the effect of Nb on corrosion behaviour of these alloys has no clear answer to whether Nb improves or degrades the corrosion resistance[8, 48, 201. Even the charge state of Nb as a defect in zirconia is debated. Experimental findings of Froideval et al [5] indicate …
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Corrosion Studies of Molten Chloride Salt: Electrochemical Measurements and Forced Flow Loop Tests
This study encompasses various aspects of corrosion in chloride molten salt environments, employing electrochemical techniques and a forced convection loop. It explores corrosion thermodynamic properties, electrochemical corrosion kinetics, and flow-induced dynamic corrosion. The study developed a …
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The Effect of Particle Surface Area to Volume Ratio on Ion Release from CoCr Spheres
… wear rate, durability, and resistance to corrosion. In spite of these advantages, little is known concerning the long-term consequences of heavy metal alloy use in the body, although early research indicates potentially carcinogenic results. This thesis is a preliminary investigation into …
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Laser Powder Bed Fusion Additive Manufacturing of Fe-based Shape Memory Alloys for Biomedical Applications
… memory properties. However, the inherently slow corrosion rate of iron-based alloys poses challenges that limit their practical clinical application. This thesis addresses these issues by employing laser powder bed fusion (LPBF) additive manufacturing (AM) to fabricate Fe-30Mn-6Si biodegradable …
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Effects of Chemical and Structural Heterogeneity on the Tribocorrosion Resistance of Metals in Aqueous Solutions
The corrosion-wear resistance tradeoff in conventional metals imposes a great challenge to their reliable long-term performance under extreme conditions where surface stress and corrosive environment coexist (i.e., tribocorrosion). In this work, strategies to introduce chemical and structural …
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Polymer-derived Si-al-c-n Ceramics:oxidation, Hot-corrosion, And Structural Evolution
… of ceramics. In this dissertation, oxidation/hot-corrosion behavior and the structural evolution of Si-Al-C-N ceramics have been studied. The structural evolution and crystallization behavior of the SiCN and SiAlCN ceramics are investigated using FT-IR, XRD, and NMR. The results revealed that …
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Multiphysics Modelling on the Effects of Composition and Microstructure during Tribocorrosion of Aluminum-based Metals and Structures
Wear and corrosion are two major threats to material integrity in multiple real-life circumstances, including oil and gas pipelines, marine and offshore infrastructures and transportations and biomedical implants. Furthermore, the synergistic effects between the two, named tribocorrosion, could …
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Abrasion-corrosion of downhole drill tool components
… funded PhD project entitled ‘Abrasion-corrosion of downhole drill tool components’. The objective of this project was to replicate the wear-corrosion mechanisms of tungsten carbide (WC)-based hardmetals and coatings occurring in downhole environments (pH 9-11) under controlled …
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Understanding the Impact of Nuclear Environment on the Hydrothermal Corrosion in SIC
… fiber composites’ viability, understanding the kinetics of their corrosion in Light Water Reactor (LWR) conditions is critical. SiC corrosion results in the formation of silica, which can then be rapidly dissolved in the LWR environment. LWR conditions are demanding on materials because they are …