Conductivity, magnesium alloys

In 1954, van der Kerk and Luijten found that in the direct synthesis of tetraorganyl-stannanes the tin — sodium alloy can be replaced with a tin-magnesium alloy . A mercury catalyst (Hg or HgCl2) was required for this variant and the process was conducted at 160 °C under pressure. 

Lithium is used to a limited extent in industry in various alloys. It increases the tensile strength and resistance of magnesium alloys to corrosi on a calcium-lithium alloy is used in purifying copper for high conductivity work. Addition of about o-1 per cent of lithium to aluminium-zinc alloys enhances their tensile strength. 

Tawe 99. Thermal Conductivity of Magnesium and Magnesium Alloys... 

Very little research has been conducted on the corrosion fatigue of magnesium alloys. Speidel et al. (1986) found that corrosion fatigue cracks propagate in a mixed... 

The atmospheric corrosion of metals is largely dependent on the electrochemical reactions occurring in the thin aqueous layer on the surface and at the interface between the solid substrate and the thin electrolyte layer. The thin aqueous layer on the surface also acts as a conductive medium which can support electrochemical processes on the surface. Due to the presence of different phases with different electrochemical properties in magnesium alloys the anodic and cathodic reactions are often localised in different areas on the magnesium surface. The microelectrodes may consist of different phases present in the microstructure of the alloys. The influence of the microstructure on the atmospheric corrosion behaviour of magnesium alloys will be discussed in more detail further on. In atmospheric corrosion the thin electrolyte reduces... 

Although its electrical conductivity is only about 60% that of copper, it is used in electrical transmission lines because of its light weight. Pure aluminum is soft and lacks strength, but it can be alloyed with small amounts of copper, magnesium, silicon, manganese, and other elements to impart a variety of useful properties. 

Group E. Atmospheres containing combustible metal dusts, including aluminum, magnesium, and their commercial alloys, or other combustible dusts whose particle size, abrasiveness, and conductivity present similar hazards in the use of electrical equipment. 

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