Recent experiments have been conducted at NRL which were designed to evaluate the chemical reactivity of exploding conductor fuses and to relate the chemical process to fuse electrical performance. In these experiments, metallic fuses including aluminum wire and foils, lithium-aluminum alloy wire, and copper wire were vaporized in distilled water. Additionally, less precise tests were conducted...

In this paper, we investigate by means of first-principles density functional theory calculations the 111 surface of the Ag-Cu alloy under varying conditions of pressure of the surrounding oxygen atmosphere and temperature. This alloy has been recently proposed as a catalyst with improved selectivity for ethylene epoxidation with respect to pure silver, the catalyst commonly used in industrial ...

Strength, hardness, and ductility characteristics were determined for a series of palladium-copper alloys that compositionally vary from 5 to 25 weight percent copper. Alloy specimens subjected vacuum annealing showed clear evidence solid solution strengthening. These showed, as function increasing copper content, increased yield strength, ultimate Vickers microhardness, while their was little ...

In the present study, the hardness and electrical properties of copper based composite prepared by hot pressing of mechanically alloyed powders were predicted using Artificial Neural Network (ANN) approach. Milling time (t, h), particles size of mechanically alloyed powders (d, nm), dislocation density (ρ, m) and compressive yield stress (σ0.2, MPa) were used as inputs. The ANN model was develo...

Authors stressed an importance of low oxygen content of slowly cooled ingots for the homogeneous amorphous half top layers of arc-melted button ingots. The quenching procedure was also not favored to produce amorphous top layers. However authors made a liquid quenching machine to enhance the cooling speed. Photographs Figs.4(b) and 5 are troublesome. Originality as well as scientific significan...

Titanium-based bulk metallic glasses (BMGs) are considered to have potential for biomedical applications because they combine favorable mechanical properties and good biocompatibility. Copper represents the most common alloying element, which provides high amorphization capacity, but reports emphasizing cytotoxic effects of this element have risen concerns about possible effects on human health...

The aim of this research is to obtain electrodeposits of copper-tin over mild steel substrate. The plating parameters were studied and a model is developed using Artificial Neural Networks (ANN). The electrodeposition of copper-tin was carried out from an alkaline cyanide bath. Copper content of coatings in alloy deposition was determined by using X-ray fluorescence spectroscopy. The results we...

nowadays, equal channel angular pressing, known as the ecap process, is one of the most popular methods for manufacturing ultra-fine grained (ufg) materials. in this paper, ecap process has been carried out on pure copper and 6012 aluminum alloy up to six passes by route . principal attention was paid to the influence of parameters such as diameter, material, and the height of billet on mechani...

Gold-based nanocrystals have attracted considerable attention for drug delivery and biological applications due to their distinct shapes. However, overcoming biological barriers is a hard and inevitable problem, which restricts medical applications of nanomaterials in vivo. Seeking for an efficient transportation to penetrate biological barriers is a common need. There are three barriers: blood...