Results 121 to 130 of about 9,030 (251)

Purification of molybdenite concentrates

open access: yes, 2008
A molybdenite flotation concentrate was refined by selective removal of copper impurity with minimum dissolution of molybdenum in the concentrate. Copper is present in the concentrate mainly as copper sulphide, chalcopyrite. Investigations were carried out on the removal of the sulphide by their selective leaching in sodium cyanide, ferric ...
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Plasma-assisted physical vapor deposition surface treatments for tribological control [PDF]

open access: yes
In any mechanical or engineering system where contacting surfaces are in relative motion, adhesion, wear, and friction affect reliability and performance.
Spalvins, Talivaldis
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