Surface Coating Industry

Question 1

These are substances that are products of mixtures of film forming materials, pigments, solvents, and other additives, that are applied to a surface, usually called the “substrate” and then dried, which will yield a thin film that is functional and decorative in sense.

Answer 1

Surface coatings

Question 2

These are insoluble particulate materials that provide colour, opacity, gloss control, rheological control, and certain functions such as corrosion inhibition or magnetic moment.

Answer 2

Pigments

Question 3

They act as carriers for surface coatings such as paints, varnishes and adhesives.

Answer 3

Solvents

Question 4

These are the flavors and spices of a coating. Modern coatings are complex formulas with thickeners, emulsifiers, dispersants, pigments, defoamers, leveling agents, photo stabilizers, curing catalysts and others

Answer 4

Additives

Question 5

•Chemical formula of Calcium Copper S ilicate
• Also know as “Cuprorivate”
• Known by Romans as “Caeruleum”
• A pigment used by Egyptians

Answer 5

Egyptian blue

Question 6

the white pigment was discovered that would replace white lead

Answer 6

Titanium dioxide

Question 7

• Contains carbon
• Modified petroleum products
• Paints and powders
• Require several layers of coating

Answer 7

Organic coatings

Question 8

• Contains silicates, metals, enamels
• S trong chemical bonds with base metals
• High resistance against environmental changes.

Answer 8

Inorganic coatings

Question 9

• Composed of epoxy resins and polyamine hardeners
• C ross linking of compounds during curing

Answer 9

Epoxy coatings

Question 10

• Type of polymer (carbamates)
• Characteristics that can easily be modified (glossiness or
transparency

Answer 10

Polyutherane coatings

Question 11

• Also known as glass coatings, silica coatings, or hydrophobic
coatings.
• Liquid polymer
• S emi permanent

Answer 11

Ceramic coatings

Question 12

• Reacts with heat swells or increases volume(insulator)
• C lassified based on the surface
• With hydrates thick layer is soft; release water vapor

Answer 12

Intumescent coatings

Question 13

SURFACE COATINGS CAN BE DIVIDED INTO TWO:

Answer 13

Architectural coatings
Industry coatings

Question 14

• Used to cover buildings, furniture and the likes in general
• They are also known as “trade sale coatings”
• Applied to wood, gypsum wall board, or plaster surfaces

Answer 14

Architectural coatings

Question 15

• Used in materials being manufactured
• Applied to a variety of materials including metals, textiles, rubbers, paper, plastics and woods.

Answer 15

Industrial coatings

Question 16

• The most used technique for covering metal surfaces in industrial settings

Answer 16

GALVANIZING METHOD

Question 17

makes use of the electrostatic characteristics of various metals, either as sheet metals or in solution as ions.

Answer 17

The electrochemical coating technique

Question 18

a widely popular method for extracting metals as well as coating metal surfaces.

Answer 18

The electrodeposition (also called electroplating) surface coating method

Question 19

is a high temperature process that heats a substrate to high temperatures and vaporizes precursor materials onto the target base metal.

Answer 19

VAPOR DEPOSITION METHOD

Question 20

Increase the surface’s ability to resist corrosion and improve adhesive qualities,

Answer 20

CONVERSION COATINGS

Question 21

• Most paints are to some extent are protecting the substrate.
• Hard, anti scratch coating on plastics and other materials;

Answer 21

Protective function

Question 22

• Which is related to binding
• Primers also encourage subsequent coatings to adhere well and sometimes have anti corrosive properties.

Answer 22

Adhesive function

Question 23

reduces scratching and improves wear and tear resistance.

Answer 23

Titanium nitride

Question 24

is a protective film created by the base metal, and certain metals, such as Ti and Al, can develop a shielding oxide coating when anodically polarized by an external electrical source.

Answer 24

Anodizing

Question 25

Phosphoric acid solutions are either dipped into or sprayed over metal surfaces as part of

Answer 25

the phosphating process

Question 26

The base metal is immersed in a chromium ion solution during

Answer 26

the chromating process

Question 27

With this technique, the target surface is cleaned before being submerged in a solution.

Answer 27

Electroless

Question 28

It is an electrometallurgical method used to coat metals that cannot be coated using standard refining or winning procedures.

Answer 28

Molten salt

Question 29

An internal direct current force leads to the anode becoming anodically polarized and the base steel being exposed to the released metal ions in the solution.

Answer 29

Refining process

Question 30

The only distinction between the electrowinning and refining processes is

Answer 30

the inert anode material utilized in the system.

Question 31

is a widely popular method for extracting metals as well as coating metal surfaces. Also called electroplating

Answer 31

electrodeposition

Question 32

makes use of the electrostatic characteristics of various metals, either as sheet metals or in solution as ions.

Answer 32

The electrochemical coating technique

Question 33

During ______, a hot alkali solution is applied to the steel surface to remove common oils and debris.

Answer 33

the caustic cleaning process

Question 34

With a hydrochloric acid solution, the surface rust and scales are eliminated in the ____ process

Answer 34

Pickling

Question 35

The surface oxides are finally eliminated and shielded from potential threats of additional oxidation during

Answer 35

the fluxing phase.

Question 36

The most used technique for covering metal surfaces in industrial settings

Answer 36

GALVANIZING METHOD