The powder metallurgy technology can be
directly made into porous, semi dense or fully dense materials and products,
such as oil bearing, gear, cam, guide rod, cutter, etc..
(1) powder metallurgy technology can reduce
the segregation of alloy components and eliminate the coarse and uneven casting
structure. In the preparation of high performance rare earth permanent magnetic
materials, rare earth storage hydrogen materials, rare earth luminescent
materials, rare earth catalyst, high temperature superconducting materials, a
new type of metal materials (such as Al Li alloy, heat-resistant Al alloy,
super alloy, powder corrosion resistance of stainless steel, high-speed steel
powder, intermetallic compounds for high temperature structural materials) has
an important role.
(2) can be prepared in amorphous and
microcrystalline, crystal, nano crystal and super saturated solid solution and
a series of high performance non equilibrium materials. These materials have
excellent electrical, magnetic, optical and mechanical properties.
(3) it is easy to implement various types
of composite, give full play to the characteristics of each component, and it
is a kind of low cost technology for producing high performance metal matrix
and ceramic composite materials.
(4) can produce ordinary smelting method
can produce with special structure and properties of materials and products,
such as a new type of porous biomaterials, porous separation membrane
materials, high performance structure ceramic abrasive and ceramic materials and
other.
(5) can achieve near net shape forming and
automated mass production, so that can effectively reduce the production of
resources and energy consumption.
(6) it can make full use of ore, tailings,
steel making sludge, steel rolling scale, recycling of scrap metal as raw
materials, is a kind of new technology which can effectively carry out the
material recycling and comprehensive utilization.
All the above are the characteristics of
powder metallurgy, powder metallurgy technology has significant energy saving,
material saving, excellent performance, high precision and good stability, and
a series of advantages, is very suitable for mass production.
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