Studies on the Nucleation Behaviors of Precipitation in Aluminum Metallization

1992 ◽  
Vol 260 ◽  
Author(s):  
Jen-Ren Wang ◽  
Jian-Yang Lin ◽  
Huey-Liang Hwang
Keyword(s):  
Activation Energy ◽  
Electrical Properties ◽  
Interfacial Energy ◽  
Strain Energy ◽  
Weight Percent ◽  
Free Energies ◽  
Interfacial Energies ◽  
Mechanical And Electrical Properties ◽  
Aluminum Metallization ◽  
Aluminum Interconnects

ABSTRACTIn order to simulate the precipitation effect during the aluminum metallization in the VLSI processing, an analytical model was constructed in this work. The nucleation behaviors of the silicon and copper precipitates within the aluminum - 1.0 weight percent silicon - 0.5 weight percent copper were studied. The volume free energies and interfacial energies were estimated, and the activation energy barriers for the precipitate formation were calculated. Silicon precipitate is more likely to nucleate than copper precipitate due to its lower interfacial energy and strain energy. The mechanical and electrical properties of the aluminum interconnects can be improved by the precipitate hardening.

Energy Minimization During Epitaxial Grain Growth: Strain VS. Interfacial Energy

1993 ◽  
Vol 317 ◽  
Author(s):  
J. A. Floro ◽  
R. Carel ◽  
C. V. Thompson
Keyword(s):  
Grain Growth ◽  
Interfacial Energy ◽  
Energy Minimization ◽  
Strain Energy ◽  
Elastic Anisotropy ◽  
Interface Energy ◽  
Growth Strain ◽  
Free Energies ◽  
Film Substrate ◽  
Epitaxial Grain Growth

ABSTRACTWe have investigated Epitaxial Grain Growth (EGG) in polycrystalline Ag films on Ni (001) substrates. EGG is driven by minimization of crystallographically anisotropie free energies such as the film/substrate interfacial energy and the film strain. Under some conditions EGG results in the preferred growth of the (111) epitaxial orientations that are predicted to minimize the interfacial energy. However, when Ag films are deposited on Ni (001) at low temperature, EGG experiments consistently find that (111) oriented grains are consumed by grains with (001) orientations predicted to have much higher interface and surface energy. The large elastic anisotropy of Ag can account for this discrepancy. The film thickness and the deposition temperature (relative to the grain growth temperature) determine whether strain energy or interface energy minimization dominates orientation evolution during grain growth.

scholarly journals Research on Mechanical and Electrical Properties of Cu-Ag Alloys Designed for the Construction of High Magnetic Field Generators

2021 ◽  
Vol 5 (4) ◽  
pp. 103-107
Author(s):  
Artur Kawecki ◽  
Eliza Sieja-Smaga ◽  
Kinga Korzeń ◽  
Magdalena Majchrowska ◽  
Piotr Noga
Keyword(s):  
Magnetic Field ◽  
Heat Treatment ◽  
Electrical Properties ◽  
Rapid Heating ◽  
Microstructural Analysis ◽  
Casting Process ◽  
Weight Percent ◽  
High Heat ◽  
Cast State ◽  
Mechanical And Electrical Properties

The individual sections, wiring and construction of electromagnet windings responsible for strong magnetic field impulses may be one application for hypoeutectic Cu-Ag alloys. High electrical properties and mechanical properties (tensile strength, yield strength, impact strength) as well as high heat, fatigue and rheological resistance are required for these kinds of applications due to the unique nature of such operations (strong vibrations of high frequency and amplitude resulting from Lorenz forces and the possibility of significant and rapid heating from Jule’s heat). The limited solubility of copper and silver in the solid state enables the effective modification of the alloys’ microstructure through heat treatment and further shaping of their high mechanical and electrical properties via cold plastic working. The article presents the manufacturing of Cu-Ag alloys with the weight percent of Ag between 3 and 7 using the continuous casting process along with research on the physicochemical, mechanical and electrical properties of the obtained casts. The research on the amount of plastic deformation and its influence on the wire drawing process and the mechanical and electrical properties of the wires is also discussed. The temperature coefficients of resistance were defined in order to determine the temperature influence on the electrical resistance changes dynamics. The microstructural analysis was carried out in the as-cast state. The preliminary research conducted indicates that the obtained Cu-Ag alloys in the as-cast state exhibit a set of high mechanical and electrical properties. The prospective next stage of research includes the selection of favourable heat treatment parameters which would provide optimally modified microstructure of the alloys, as well as determining the deformation coefficients allowing for further increases in the mechanical and electrical properties.

Study of mechanical and electrical properties of AlMgSi alloys

2010 ◽  
Vol 35 (1) ◽  
pp. 59-69 ◽  
Author(s):  
Fares Serradj ◽  
Rebal Guemini ◽  
Hichem Farh ◽  
Karim Djemmal
Keyword(s):  
Electrical Properties ◽  
Mechanical And Electrical Properties

scholarly journals The Physical-Mechanical and Electrical Properties of Cast Aluminum-Based Alloys Reinforced with Diamond Nanoparticles

2015 ◽  
Vol 57 (11) ◽  
pp. 1485-1490 ◽  
Author(s):  
S. A. Vorozhtsov ◽  
А. P. Khrustalyov ◽  
D. G. Eskin ◽  
S. N. Кulkov ◽  
N. Alba-Baena
Keyword(s):  
Electrical Properties ◽  
Cast Aluminum ◽  
Diamond Nanoparticles ◽  
Mechanical And Electrical Properties

scholarly journals Investigation of Graphene Derivatives on Electrical Properties of Alkali Activated Slag Composites

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4374
Author(s):  
Wu-Jian Long ◽  
Xuanhan Zhang ◽  
Biqin Dong ◽  
Yuan Fang ◽  
Tao-Hua Ye ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrical Properties ◽  
Mechanical Performance ◽  
Structural Defects ◽  
Alkali Activated Slag ◽  
Mechanical And Electrical Properties ◽  
Reduced Graphene ◽  
Graphene Derivatives ◽  
Activated Slag ◽  
Alkali Activated

Reduced graphene oxide (rGO) has been widely used to modify the mechanical performance of alkali activated slag composites (AASC); however, the mechanism is still unclear and the electrical properties of rGO reinforced AASC are unknown. Here, the rheological, mechanical, and electrical properties of the AASC containing rGO nanosheets (0, 0.1, 0.2, and 0.3 wt.%) are investigated. Results showed that rGO nanosheets addition can significantly improve the yield stress, plastic viscosity, thixotropy, and compressive strength of the AASC. The addition of 0.3 wt.% rGO nanosheets increased the stress, viscosity, thixotropy, and strength by 186.77 times, 3.68 times, 15.15 times, and 21.02%, respectively. As for electrical properties, the impedance of the AASC increased when the rGO content was less than 0.2 wt.% but decreased with the increasing dosage. In contrast, the dielectric constant and electrical conductivity of the AASC containing rGO nanosheets decreased and then increased, which can be attributed to the abundant interlayer water and the increasing structural defects as the storage sites for charge carriers, respectively. In addition, the effect of graphene oxide (GO) on the AASC is also studied and the results indicated that the agglomeration of GO nanosheets largely inhibited the application of it in the AASC, even with a small dosage.

Sign in / Sign up

Export Citation Format

Share Document