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A galvanic series is a hierarchy of metals (or other electrically conductive materials, including composites and semimetals) that runs from noble to active, and allows one to predict how materials will interact in the environment used to generate the series.
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In metallurgy, non-ferrous metals are metals or alloys that do not contain iron (allotropes of iron, ferrite, and so on) in appreciable amounts.. Generally more costly than ferrous metals, non-ferrous metals are used because of desirable properties such as low weight (e.g. aluminium), higher conductivity (e.g. copper), [1] non-magnetic properties or resistance to corrosion (e.g. zinc). [2]
where k is a constant, W is the weight loss of the metal in time t, A is the surface area of the metal exposed, and ρ is the density of the metal (in g/cm 3). Other common expressions for the corrosion rate is penetration depth and change of mechanical properties.
Costco is again venturing into the precious metals market, expanding its offerings beyond the gold and silver bars it sold to great success. The retail giant now offers 1-ounce platinum bars for ...
Galling, sometimes called cold welding, is a form of severe adhesive wear, which can occur when two metal surfaces are in relative motion to each other and under heavy pressure. Austenitic stainless steel fasteners are particularly susceptible to thread galling, though other alloys that self-generate a protective oxide surface film, such as ...
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Read more: Don’t leave your family unprotected — find life insurance coverage up to $2 million with no medical exam or blood test But the numbers don’t elucidate which grown-up kids are a ...