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Making Metal Powder
The first step in the overall powder metallurgy (PM) process is making metal powders. There…
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Metallurgy – Ores and minerals
Metals occur in nature sometimes in free or native state, but most of these occur in nature…
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Metallurgy – Purification of metals
(a) Electrolytic refining This is one of the most convenient and important method of refining…
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Metallurgy – Purification of ores
The ore is generally associated with rock impurities like clay, sand etc. called ' gangue or…
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Permeability and Flow Rate
Sizing a hopper outlet or feed tube to achieve the required discharge rate is more…
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Testing of Flow Rate
Flow of metal powders is determined by standard methods developed by ASTM and MPIF. Flow…
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Variables Affecting Flow Rate
Flow characteristics are dependent on several variables, including interparticle friction, particle shape and size, type…
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Attrition Mills
Milling in an attrition mill (Fig. 24) is effected by the stirring action of an agitator that…
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Gas Atomization
There are many methods that have been used to produce aluminum and aluminum alloy powders including…
Posted inPowder Metallurgy
Factors Affecting Angle of Repose
Internal factors are those inherent to powders, or characteristic of the nature of powders. These…