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General
- Metal Powders
are precisely engineered materials that meet a wide range of
performance requirements. These engineered materials offer wide
latitude to develop materials with properties tailored to the
application through metal alloying. These engineering properties are
affected by several factors that include material type, powder
fabrication process and the component manufacturing process.
Process
- The process
steps involved in the production of metal powders are melting,
atomizing and solidifying of the respective metals and alloys. Metal
powder production methods such as oxide reduction and water
atomization, are limited with respect to special powder quality
criteria, such as particle geometry, particle morphology and
chemical purity.
- Metals
commonly used in powder form include iron, steel tin, nickel,
copper, aluminium and titanium. Refractory metals include tungsten,
molybdenum and tantalum. Bronze, brass, stainless steel and nickel
cobalt alloys are also used.
Technology
- Metal powder
technology is one of the most established production methods
nowadays in all kinds of industries.
- A
revolutionary method of using concentrated solar energy for
producing hydrogen in a clean, safe and inexpensive way was
developed by a cooperation of scientists from Israel, Sweden,
Switzerland and France. This new method, based on the production of
pure zinc, may enable an easier and quicker move to a hydrogen-based
economy thus reducing the need for the depleting petroleum and its
polluting side effects.
Market
- Metal powders
are just a tiny fraction of the global metals industry, yet they
play a key role in such high-profile sectors as cars and consumer
electronics. The global value of metal powder consumption has risen
since 2000 to over $3.7 billion from under $3 billion. Part of this
increase is due to recently escalating primary metal prices. The
increase in overall tonnage shipped is in the order of 20%.
- Metal powder
makers are developing new high-density steels and processes to
achieve a density of 7.5 grams per cubic centimeter by single
pressing and sintering. Achieving densities of 7.5 and above will
certainly open up new markets, with PM gears and sprockets for
automotive transmissions being but two such potential applications
Applications
- Metal powders
are used in a wide variety of applications which include dietary
supplements in food processing, additives in paint and other
coatings, as pigments in printing and packaging, in solid fuels and
cements. Probably the major area though is in the cost-effective
production of metal components for a vast array of end uses.
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