Coatings Flashcards

(42 cards)

1
Q

applied to a surface to protect the substrate from
corrosion

A

COATINGS

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2
Q

thin layers of materials that are applied to a metal surface to
protect it from corrosion.

A

COATINGS

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3
Q

materials used in coating

A

polymers, ceramic, and metal alloys

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4
Q

TYPES OF
COATINGS

A

metallic and organic

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5
Q

made of metal applied to surface of another metal to provide protection
against corrosion

A

METALLIC COATING

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6
Q

METALLIC COATING processes

A

dipping, electroplating, spraying,
cementation, and diffusion

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7
Q

a layer that changes the surface
properties of the
metal being applied

A

METALLIC COATING

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8
Q

a layer that changes the surface
properties of the workpiece to those of the
metal being applied

A

METALLIC COATING

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9
Q
A
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10
Q

Corrosion-resistant to a wide range of chemical environments such as: the
atmosphere, ammonia, coal gas, fluorine, hydrogen peroxide, mercury, etc.

A

Nickel

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11
Q

Nickel Usually prepared by

A

electroplating

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12
Q

Nickel Plated either directly on steel or sometimes over an

A

intermediate coating of copper

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13
Q

tanks, pipings, and
valves

A

nickel

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14
Q

unique properties like corrosion
resistance, malleability, and low melting
poin

A

lead

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15
Q

Lead Usually formed by either

A

hot dipping or
by electrodeposition

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16
Q

construction
industry for applications such as
waterproofing and roofing.

A

Lead

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17
Q

enhance the corrosion resistance of iron
castings to sulfuric acid

A

Lead and lead-tin coatings

18
Q

Excellent resistance to both atmospheric and aqueous corrosion.

19
Q

inexpensive compared to other corrosion prevention

20
Q

Zinc also called

A

galvanized coatings

21
Q

Zinc methods

A

hot dipped or electroplated

22
Q

other words for Electrogalvanized

A

electroplated zinc coating

23
Q

bolts, screws, and
wire products

24
Q

very specific substrate metals
(e.g., iron, aluminum, and steel)

25
Superior protection against corrosion in **alkaline and marine environments**
Cadmium
26
methods used in cadmium
electrodeposition
27
More expensive than zinc, but retains a bright metallic appearance longer,
Cadmium
28
in low to moderate corrosive environment where they can provide long-term protection
Tin
29
do not corrode in soft waters.
tin
30
Widely used in the food packaging industry to provide a protective barrier
Tin
31
Made from various organic materials
ORGANIC COATINGS
32
applied to surfaces in liquid form
ORGANIC COATINGS
33
These coatings are based on carbon containing materials
ORGANIC COATINGS
34
offer superior resistance to abrasion, turbulence, harsh chemicals, and severe temperatures
Epoxy
35
used in metal finishing to protect metal surfaces from corrosion and wear
Epoxy
36
useful, for example, to seal leaks temporarily in ferrous or nonferrous piping
Epoxy
37
coating used for their resistance to abrasion, chemical exposure, and weathering
Polyester
38
used for their transparency, color retention, and resistance to UV light.
Acrylic
39
water-resistant, making them a good choice for applications where protection against water and moisture
Acrylic
40
easy to apply, with many formulations available in spray-on or brush-on forms
Acrylic
41
polyester method
spray or electrostatic deposition
42