TUNGSTEN
– SCI & TECH
News:
The Science Quiz | The
quiet awesomeness of tungsten
What's
in the news?
●
Polymeric based composites have gained
considerable attention as potential candidates for advanced radiation shielding
applications due to their unique combination of high-density, radiation
attenuation properties and improved mechanical strength.
Tungsten:
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Tungsten is a rare metal that is known for its high melting point, hardness and density.
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It is widely used in various industries,
including aerospace, defence,
electronics and construction.
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The ore of Tungsten is called Wolfram.
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Domestic requirements are met by imports.
Properties:
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The most important property of Tungsten is
that of self-hardening which it imparts to steel.
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Over 95 percent of the wolfram is used by
the steel industry.
Applications:
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Steel
containing the requisite proportion of tungsten is mainly used in manufacturing
munitions, armour plates, heavy guns, hard cutting tools, etc.
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Tungsten is easily alloyed with chromium, nickel, molybdenum, titanium, etc. to yield
a number of hard facing, heat and corrosion resistant alloys.
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It is also used for various other purposes
such as electric bulb filaments, paints,
ceramics, textiles, etc.
Distribution
of Wolfram ore in India:
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Karnataka (42%)
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Rajasthan (27%)
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Andhra Pradesh (17%)
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Maharashtra (9%)
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Haryana, Tamil Nadu, Uttarakhand and West
Bengal (5%)
Largest
Producers:
- China
- Russia
- Canada