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Showing 1 to 16 of 16 for “"ternary alloy"”.
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Mechanism of the NiCoFe ternary alloy deposition
Electrodeposited NiCoFe ternary alloys are of interest for their magnetic and thermophysical properties. The reaction rates and resulting composition and current efficiency are often determined empirically, due to a lack of understanding of the electrodeposition mechanism and coupled mass …
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Lattice-mismatched epitaxy of AlInP and characterization of its microstructure and luminescence
The synthesis of high-quality III-V ternary alloy semiconductors is vital to the success of major technologies such as LEDs, laser diodes, high-efficiency solar cells and power electronics. However, the epitaxy of ternary alloys can be complicated due to the dissimilar behavior of constituent atoms …
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Low temperature transient liquid phase bonding of copper
… at very high service temperatures (300⁰C+). The ternary alloy system of Bi-In-Sn was investigated in the bonding of copper substrates. All bonds were made at 125⁰C with 25psi of fixturing pressure. Primary solidification was observed in as little as 15 minutes. The mechanical properties of the …
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Computational modeling of hydrogen embrittlement of iron aluminides
… of two Fe-28%Al iron aluminides revealed that alloys with B, Zr, and C addition (FA189) are extrinsically more susceptible to environmental embrittlement than the base ternary alloy (FA186) under constant tensile loading condition. This may due to the effect of smaller grain sizes caused by …
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Photo-Hall studies of compound semiconductors
… purity compound semiconductors GaAs, InP and a ternary alloy In$\sb{0.53}$Ga$\sb{0.47}$As. The major emphasis of this work involves the phenomenon of persistent photoconductivity. This phenomenon has been used to facilitate the electrical characterization of homogeneous and inhomogeneous thin …
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Stress relaxation of AZ31 alloy using high energy diffraction microscopy
AZ31 is a commercial Mg-3%Al-1%Zn ternary alloy with good specific strength, but relatively limited room temperature formability -- a consequence of marked difference in strength of slip systems in this hcp alloy. Tensile test is the traditional method to study the kinetics of individual slip/twin …
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Nanoscale self-organization in irradiated ternary alloys
Microstructural stability of nanostructured alloys under harsh environments such as high temperatures and high dose irradiation is a primary concern in the deployment of those materials for engineering applications. This thesis work explores several pathways to stabilize nanostructures in Cu-based …
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Metal oxides as buffer layers in polycrystalline CdTe thin-film solar cells
… emitter, metal oxides such as ZnO, MgO, and the ternary alloy MgxZn1-xO have large optical band-gaps making them transparent to most of the solar spectrum and an ideal emitter layer adjacent to light-facing side of the absorber in a superstrate configuration. The optical and electrical properties …
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Creep behaviour of the ternary lead-free solder alloy : Sn-3.8wt.%Ag-0.7wt.%Cu
… behaviour of a popular lead-free replacement alloy, Sn-3.8wt.%Ag-0.7wt%Cu (Sn-Ag-Cu), in joint and bulk form. Experimental work involved the determination of the creep properties of this alloy at various temperatures, over a range of stresses. Over the regions tested, the creep behaviour is …
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First-principles approach to screening multi-component metal alloys for hydrogen purification membranes
… operational standards, and be cost effective. Alloys offer an alternate route in improving upon membranes based on pure metal such as Pd. Development of new membranes is hampered by the large effort and time required not only to experimentally develop these membranes but also to properly test …
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Photo-hall studies of compound semiconductors
… purity compound semiconductors GaAs, InP and a ternary alloy In0 . 53Ga0 . 47As. The major emphasis of this work involves the phenomenon of persistent photoconductivity. This phenomenon has been used to facilitate the electrical characterization of homogeneous and inhomogeneous thin epitaxial …
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Nanostructure Characterization, Fabrication and Devices of 2D Mos2 and Mos2/WS2 Hetrostructures
… found is 200ppm. In-addition one step growth of ternary alloys Mo1-xWxS2 has been achieved by LPCVD. Different compositions of W in MoS2 have been investigated by micro-photoluminescence and micro-Raman spectroscopy. In-plane heterojunctions of atomic-thick (2D) semiconductors (MoS2/WS2) are …
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Corrosion and Tribocorrosion Kinetics of Al-based Concentrated Alloys in Aqueous Sodium Chloride Solution
Commercial aluminum (Al) alloys are often precipitation strengthened to improve strength and wear resistance. However, localized corrosion due to the galvanic coupling between the precipitates and Al matrix often leads to degraded performance when these alloys are exposed to corrosive environment. …
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SYNTHESIS, ELECTRONIC AND OPTO-ELECTRONIC TRANSPORT PROPERTIES OF ATOMICALLY THIN 2D LAYERS OF MoS2, WSe2 and CuIn7Se11
… as CVT grown mechanically exfoliated WSe2 and ternary alloy of CuIn7Se11 is reported. Specifically, it is shown that in case of MoS2, the ac conductance (σ(ω); measured in the range of 10mHz < ω < 0.1 MHz) of atomically thin 2D layers of chemical vapor deposited (CVD) Molybdenum Disulphide …
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Nanostructured alloys for extreme conditions
The development of new nanostructured materials for use in extreme mechanical and thermal environments is likely to be of critical importance for a number of future energy technologies. These materials are characterized by a large density of grain boundaries. Consequently, they are inherently …
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Desarrollo de técnicas de caracterización para materiales de banda intermedia : Development of characterization techniques for intermediate band materials
… based on the synthesis of highly mismatched alloys (HMAs). The main focus of this Thesis has been on the dot/barrier system formed by InAs/GaAs nano-structures, and in the ternary alloy GaAs1-xNx (proposed as multi-band material by professor W. Walukiewicz’s group at LBNL). Chapter III …