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2. Galvanic corrosion - Wikipedia

   en.wikipedia.org/wiki/Galvanic_corrosion

   Galvanized mild steel cable ladder with corrosion around stainless steel bolts. All metals can be classified into a galvanic series representing the electrical potential they develop in a given electrolyte against a standard reference electrode. The relative position of two metals on such a series gives a good indication of which metal is more ...

3. Galvanic series - Wikipedia

   en.wikipedia.org/wiki/Galvanic_series

   The unshaded bars indicate the location on the chart of those steels when in acidic/stagnant water ( like in the bilge ), where crevice-corrosion happens. Notice how the *same* steel has much different galvanic-series location, depending on the electrolyte it's in, making prevention of corrosion .. more difficult.

4. Flare fitting - Wikipedia

   en.wikipedia.org/wiki/Flare_fitting

   Copper and its alloys, mild steel, and in some cases small diameter stainless steel pipes are most commonly reamed with hand tools. [ 15 ] Copper is perfectly machinable, a quality tool successfully performs wall deformation, the surface remains smooth, the wall thickness is almost the same, and the material retains a homogeneous structure.

5. Cathodic protection - Wikipedia

   en.wikipedia.org/wiki/Cathodic_protection

   Aluminum sacrificial anodes (light colored rectangular bars) mounted on a steel jacket structure. Zinc sacrificial anode (rounded object) screwed to the underside of the hull of a small boat. Cathodic protection (CP; / k æ ˈ θ ɒ d ɪ k / ⓘ) is a technique used to control the corrosion of a metal surface by making it the cathode of an ...

6. Gold–aluminium intermetallic - Wikipedia

   en.wikipedia.org/wiki/Gold–aluminium_intermetallic

   Au 5 Al 2 's formation at the joint causes increase of electrical resistance, which can lead to electrical failure. [3] Au 5 Al 2 typically forms at 95% of Au and 5% of Al by mass, its melting point is about 575 °C, which is the lowest among the major gold-aluminum intermetallic compounds.

7. Fretting - Wikipedia

   en.wikipedia.org/wiki/Fretting

   Fretting also occurs on virtually all electrical connectors subject to motion (e.g. a printed circuit board connector plugged into a backplane, i.e. SOSA/VPX). Commonly most board to board (B2B) electrical connectors are especially vulnerable if there is any relative motion present between the mating connectors. A mechanically rigid connection ...

8. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   Although they are usually used to attach pipe and fittings to mechanical supports in buildings, they do not connect the pipes. Fasteners commonly used with piping are a stud bolt [ 25 ] with nuts (usually fully threaded, with two heavy, hexagonal nuts); a machine bolt and nut; or a powder-actuated tool (PAT) fastener (usually a nail or threaded ...

9. Monel - Wikipedia

   en.wikipedia.org/wiki/Monel

   Compared to steel, Monel is very difficult to machine as it work-hardens very quickly. It needs to be turned and worked at slow speeds and low feed rates. It is resistant to corrosion and acids, and some alloys can withstand a fire in pure oxygen. It is commonly used in applications with highly corrosive conditions.