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.
Results
Showing 1 to 20 of 25 for “"Al alloy"”.
-
A Nacreous Self-Assembled Nanolaminate for Corrosion Resistance on 2024-Al Alloy
… and polymer were formed on mica, silicon, and aluminum 2024-T3 alloy using alternating solutions of positively and negatively charged polymer and clay, respectively. Atomic force microscopy was used to observe the morphology of the composite films on mica and silicon. It was found that solution …
-
Liquid dynamic compaction spray deposition of commercial and modified 3003 Al-alloy : process application and materials characterization
… Institute of Technology, Dept. of Materials Science and Engineering, 1996.
-
Understanding the post-processing behaviour of additively manufactured A20X alloy: The new high-strength Al alloy in the market
L'abstract è presente nell'allegato / the abstract is in the attachment
-
Evaluation of corrosion behaviour of hot dip Zn and Zn-Al alloy coatings on steel wire using laboratory and field tests
The use of galvanised coatings on steel for structural ropes, bundles and wires has become standard practice as unprotected steel is prone to corrosion degradation. Galvanised coatings increase the service lifespan of steel by providing barrier and cathodic corrosion protection. Zinc (Zn) and …
-
Tribological Behaviours Influenced by Surface Coatings and Morphology
… industry to produce ceramic coatings on light metal components due to their high hardness, wear resistance, corrosion resistance and low friction coefficient. In this work, PEO process was used to produce a relatively thick (~20 μm) coating on A356 Al alloy for improving the wear resistance and …
-
Essays in operations management
… in the above technology industries is the alternating possession of bargaining power caused by cyclical demand. We incorporate a reciprocal game in a dyadic supply channel over two periods. We investigate how a supplier is influenced and protects himself during the oversupply period by …
-
Bruchverhalten von Leichtmetallen unter Impact-Beanspruchung
… work, the flow and fracture behaviour of the Al alloy AA7075 (AlZnMgCu1.5), the Mg alloy AZ80 (MgAl8Zn) and the Ti alloy TiAl6V4 have been investigated in compression and tensile tests at different strain rates (0.001-5000s-1) und temperatures (20-450°C). To evaluate the influence of the …
-
Investigation of a novel solar photovoltaic/loop-heat-pipe heat pump system
… deployment of solar photovoltaic (PV) and thermal devices imminent, this research aims to resolve some engineering barriers to the existing solar photovoltaic/thermal (PV/T) technologies by incorporating an innovative loop heat pipe (LHP) and a typical heat pump. In addition, a coated …
-
High-temperature corrosion study of alloys in molten MgCl₂-KCl eutectic salt
The MgCl₂-KCl molten salt has been proposed as one of the heat transfer fluids (HTFs) in the solar energy system because of its potential thermal properties. This research investigates the corrosion behavior and protection strategies of Haynes 230 (H230), Incoloy 800H (800H), and Stainless Steel …
-
On the quasi-static and dynamic crushing of random foams
Lightweight cellular materials such as foams exhibit excellent energy absorption characteristics and are widely used for impact mitigation in a variety of applications. In this study a modeling framework is developed in order to investigate the crushing behavior of Al-alloy open-cell foams under …
-
Microstructures and mechanical properties of high pressure die cast A383 alloys
… studies the processing-microstructure-mechanical property relationships in the high pressure die cast A383 alloy. The high pressure die casting process has been widely used in automotive industry due to the rapid cooling rate and short cycle time. Much attention has been paid to the high …
-
Bimetallic Nanoporous Sponges
Nanoporous silver (np-S) is a promising nanomaterial with unique physical properties distinct from its bulk counterpart, including high surface area, enhanced chemical sensing and tuneable optical and electrical properties. This thesis explores the fabrication and characterisation of np-S thin …
-
Pressure infiltration behaviour and properties of aluminium alloy - Oxide ceramic preform composites
In the pressure infiltration processing of Metal Matrix Composites (MMCs), molten metal is injected into a porous preform. This research investigated ways to optimize the processing and properties of MMCs with Al alloy matrices. A ceramic volume fraction of 0.30 to 0.40 was used to keep a …
-
Modellierung der Verfestigung technischer Aluminiumlegierungen
… large strain work hardening behaviour of technical aluminium alloys as function of the deformation temperature and strain rate is described in two ways. First a phenomenological description is made using well known models from literature. For some specific cases the models are expanded. …
-
Constitutive analysis and extrusion modeling of 6061 alloy and particulate composite
Isothermal hot torsion tests were performed on 6061 Al alloy followed by a constitutive analysis of the alloy and three metal matrix composites previously tested (10%Al 2 O 3 /6061, 15%SiC/6061, and 20%Al 2 O 3 /6061). The flow stresses decrease with increasing deformation temperature and the rate …
-
Qualification and characterization of metal additive manufacturing
… as an effective and efficient way to digitally manufacture complicated structures. Raytheon Missile Systems seeks to gain limited production capability with metals AM, which can only be achieved with qualified, predictable processes that reduce variation. The project documented in this …
-
Corrosion susceptibility of thin films
The corrosion susceptibility of Al thin-film metallizations in an aqueous solution containing chlorine was measured. DC polarization techniques were used to determine the corrosion behavior of Al thin-film metallizations, Al-alloy thin-film metallizations and Al thin-film metallizations deposited …
-
A study of energy scavenging strategy in a tapping tree power
… fields. The energy is captured from external sources (thermal, wind, solar, vibration and hydrodynamic) and the energy source for energy harvesters is present as ambient background and it is free. The energy can be harvested in term of sensors or direct applying which depends on the source …
-
Corrosion Behaviors of Coated Aluminum Alloys in Simulated Corrosive Environment
<p>This study investigated the corrosion of an aluminum alloy with and without coatings under simulated corrosive environments. Coatings were selected and applied from commercial materials and techniques, consisting of microceramic, epoxy primer, and topcoat. The experiments for coated specimens …
Page 1 of 2