نتایج جستجو برای: intermetallic growth

تعداد نتایج: 821566  

2008
W. Shualdi I. Ahmad G. Omar A. Isnin

Intermetallic compounds (IMCs) play a great role in solder joint reliability. Intermetallic formation was studied between SnAgSb solder and Cu substrate of a power package device. The integrity of IMC region is vital to the performance and reliability of the semiconductor packages. The solder joint of the as received packages were subjected to the thermal aging test for 50, 100, 200 and 400 hou...

Journal: :Acta Metallurgica Slovaca 2023

The Mg2Si intermetallic alloys have been prepared by using a powder metallurgy process. milling treatment of silicon as raw material to improve the formation phase was investigated in this research. un-milled and milled mixed with magnesium for 2 hours. powders were compacted stainless steel tubes sintered at 500 600°C 6 crystal structure identified X-ray diffractometer (XRD), while fracture su...

تهوری, رامین, توسلی, سهیل, عباسی, مهرداد,

The purpose of this article is to study the formation of intermetallic compounds (IMCs) at the interface of Al/Cu bimetal produced by compound casting of molten Al in solid copper tubes. The mechanism of the intermetallic compounds formations at the interface, the effects of molten aluminum pouring temperature and solid copper tubes preheating tempreture, were investigated on the IMCs type...

Microstructural evolutions during the high-temperature annealing of Mg alloys containing Al and Gd and after the extrusion process were evaluated and compared to those of the AZ61 alloy. It was revealed that during exposure at the elevated temperatures, the presence of (Mg,Al)3Gd phase, in the form of fine and dispersed particles in the matrix after the extrusion process, could be favorable for...

2014
Marc Armbrüster Robert Schlögl Yuri Grin

The application of intermetallic compounds for understanding in heterogeneous catalysis developed in an excellent way during the last decade. This review provides an overview of concepts and developments revealing the potential of intermetallic compounds in fundamental as well as applied catalysis research. Intermetallic compounds may be considered as platform materials to address current and f...

Journal: :Journal of The Electrochemical Society 2022

The direct ZnAl layered double hydroxide growth on AA2024 is a fast-occurring reaction, yet characterized by an inhomogeneous film thickness. It has been shown that at the periphery of Cu-rich intermetallic, flakes tend to be larger and denser. A combination in situ ex measurements were used monitor changes grown regions intermetallics. Immediately after immersion, activation intermetallic phas...

2017
Qing Zhou Jian Wang Amit Misra Ping Huang Fei Wang Kewei Xu

Intermetallic precipitates are widely used to tailor mechanical properties of structural alloys but are often destabilized during plastic deformation. Using atomistic simulations, we elucidate structural instability mechanisms of intermetallic precipitates associated with dislocation motion in a model system of Al2Cu. Interaction of non-coplanar <001> dislocation dipoles during plastic deformat...

2018
Fabian C. Gladisch

The quest for solid-state materials with tailored chemical and physical features stimulates the search for general prescriptions to recognize and forecast their electronic structures providing valuable information about the experimentally determined bulk properties at the atomic scale. Although the concepts first introduced by Zintl and Hume–Rothery help to understand and forecast the bonding m...

Thermal stability and the kinetics of the grain growth of nano-crystalline Mg-6Al-1Zn-1Si alloy prepared via mechanical alloying (MA) were investigated. It started with elemental powders, using a variety of analytical techniques including differential scanning calorimetry (DSC), X-ray diffraction method (XRD), and scanning electron microscopy (SEM) coupled with energy dispersive spectrometry (E...

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