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Anonymous
Anonymous asked in 科學及數學化學 · 1 decade ago

use of Mg in daily life ?

what is the use of Mg in daily life ?

2 Answers

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  • 1 decade ago
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    Magnesium, in its purest form, is used in several high volume part manufacturing applications, including automotive and truck components.

    Specialty, high-grade car wheels of magnesium alloy are called "mag wheels". In 1957 a Corvette SS, designed for racing, was constructed with magnesium body panels. Volkswagen has used magnesium in its engine components for many years.

    For a long time, Porsche used magnesium alloy for its engine blocks due to the weight advantage. There is renewed interest in magnesium engine blocks, as featured in the 2006 BMW 325i and 330i models. The BMW engine uses an aluminium alloy insert for the cylinder walls and cooling jackets surrounded by a high temperature magnesium alloy AJ62A. The application of magnesium AE44 alloy in the 2006 Corvette Z06 engine cradle has advanced the technology of designing robust automotive parts in magnesium. Both of these alloys are recent developments in high temperature low creep magnesium alloys. The general strategy for such alloys is to form intermetallic precipitates at the grain boundaries, for example by adding mischmetal or calcium.[1] New alloy development and lower costs, which are becoming competitive to aluminium, will further the number of automotive applications.

    圖片參考:http://upload.wikimedia.org/wikipedia/commons/thum...

    Products made of magnesium: firestarter and shavings, sharpener, magnesium ribbon

    The second application field of magnesium is electronic devices. Due to low weight, good mechanical and electrical properties, magnesium is widely used for manufacturing of mobile phones, laptop computers, cameras, and other electronic components. Magnesium is even used to make some higher end yo-yos, such as the Duncan Freehand Mg.

    Historically, magnesium was one of the main aerospace construction metals and was used for German military aircraft as early as World War I and extensively for German aircraft in World War II. The Germans coined the name 'Elektron' for magnesium alloy which is still used today. Due to perceived hazards with magnesium parts in the event of fire, the application of magnesium in the commercial aerospace industry was generally restricted to engine related components. Currently the use of magnesium alloys in aerospace is increasing, mostly driven by the increasing importance of fuel economy and the need to reduce weight. The development and testing of new magnesium alloys notably Elektron 21 which has successfully undergone extensive aerospace testing for suitability in both engine, internal and airframe components. European Community runs three R&D magnesium projects in Aerospace priority of Six Framework Program.

    圖片參考:http://upload.wikimedia.org/wikipedia/commons/thum...

    Magnesium firestarter (in left hand), used with a pocket knife and flint to create sparks which ignite the shavings

    Incindiary use: Magnesium is flammable, burning at a temperature of approximately 2500 K (2200 °C, 4000 °F), and the autoignition temperature of magnesium is approximately 744 K (473 °C, 883 °F) in air. The extremely high temperature at which magnesium burns makes it a handy tool for starting emergency fires during outdoor recreation. Other related uses include flashlight photography, flares, pyrotechnics, fireworks sparklers, and incendiary bombs.

    Other uses include:

    Removal of sulfur from iron and steel.

    Production of titanium

    Photoengraved plates in the printing industry.

    Combined in alloys, this metal is essential for airplane and missile construction.

    When used as an alloying agent, this metal improves the mechanical, fabrication and welding characteristics of aluminium.

    Additive agent for conventional propellants and used in producing nodular graphite in cast iron.

    Reducing agent for the production of pure uranium and other metals from their salts.

    Magnesium turnings or ribbon are used to prepare Grignard reagents, which are useful in organic synthesis

    Easily reacting with water, it can serve as a desiccant

    Source(s): wikipedia
  • 1 decade ago

    The main use of Mg is for sacrificial protection

    sacrificial protection is when one metal (more reactive than iron) is connected to iron to prevent rusting. The metal attached to iron will be "willing to give out" electrons for iron's rusting process, it will rust instead of iron, thus called the "sacrificial protection"

    We connect bags of Mg to underground waterpipes (which is made of iron)

    when the pipes rust, the Mg connected will rust instead

    therefore, we only need to replace the Mg instead of replacing the whole underground waterpipe. This is the main use of Mg in daily life.

    Source(s): i wrote it myself, not like the one above me copying everything from the web
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