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NACE > Key Terms > Flashcards

Key Terms Flashcards

0
Q

Instrument Calibration History Reports

A

Reports that normally contain information on

how frequently each instrument is to be or has been calibrated

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1
Q

Coatings Specification

A

A formal, structured document containing information on a project
(such as scope, terms, schedule, inspection, etc.)

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2
Q

Materials Safety Data Sheets (MSDS):

A

A form containing data of known substances in a

particular product

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3
Q

Quality Assurance (QA):

A

Any systematic process that checks whether a product or service
being developed is meeting specified requirements.

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4
Q

Quality Control (QC):

A

A procedure intended to ensure that a manufactured product or per-
formed service meets the requirements of the client or customer.

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5
Q

Quality Control Technician:

A

The inspector’s role, primarily responsible for observing and
reporting the technical aspects of a coating project and its conformance or deviation from the
project specification.

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6
Q

Standards:

A

A term applied to codes, specifications, recommended practices, procedures, classifications, test methods, and guides that provide interchangeability and compatibility. Standards enhance quality, safety, and economy; they are published by a standards-developing organization or group

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7
Q

Anode:

A

The electrode of an electrochemical cell at which oxidation occurs. Electrons flow away from the anode in the external circuit. Corrosion usually occurs and metal ions enter the solution at the anode.

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8
Q

Cathode:

A

The electrode of an electrochemical cell at which reduction is the principal reaction.
Electrons flow towards the cathode in the external circuit

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9
Q

Cathodic Protection:

A

A technique to reduce the corrosion of a metal surface by making that
surface the cathode of an electrochemical cell.

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10
Q

Corrosion:

A

The deterioration of a material, usually a metal, that results from a reaction with
its environment.

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11
Q

Corrosion Inhibitor:

A

A chemical substance or combination of substances that, when present in the environment, prevents or reduces corrosion

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12
Q

Crevice Corrosion:

A

Localized corrosion of a metal surface at, or immediately adjacent to, an area that is shielded from full exposure to the environment because of close proximity of the metal to the surface of another material

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13
Q

Electrolyte:

A

A chemical substance containing ions that migrate in an electric field

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14
Q

Galvanic Series:

A

A list of metals and alloys arranged according to their corrosion potentials in a given environment

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15
Q

Generalized Corrosion:

A

Corrosion that is distributed more or less uniformly over the surface
of a material

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16
Q

Localized Corrosion:

A

This occurs at discrete sites on the metal surface

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17
Q

Mill Scale:

A

The oxide layer formed during hot fabrication or heat treatment of metals

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18
Q

Passivation:

A

A reduction of the anodic reaction rate of an electrode involved in corrosion

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19
Q

Pitting Corrosion:

A

Localized corrosion of a metal surface that is confined to a small area and takes the form of cavities called pits.

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20
Q

Return Path (Metallic Pathway):

A

This connects the anode and cathode, allowing passage of

electrons, generated at the anode, to the cathode

21
Q

Dew Point:

A

The temperature at which moisture will begin to form on a steel surface

22
Q

Infrared Thermometers

A

Devices that measure temperature, using blackbody radiation emit-
ted from objects

23
Q

Magnetic Surface Contact Thermometer:

A

One of the most common instruments used to

determine substrate temperature

24
Q

Psychrometric Chart:

A

A graph of the physical properties of moist air at a constant pressure
(often equated to an elevation relative to sea level)

25
Q

Psychrometric Tables:

A

Booklet used to determine the relative humidity and dew-point
temperature of the air

26
Q

Relative Humidity:

A

The ratio, expressed as a percentage, of the amount of water vapor present in a given volume of air at a given temperature to the amount required to saturate the air at that temperature

27
Q

Repeatability:

A

The ability of the instrument to give the same readings under similar ambient and target conditions

28
Q

Sling Psychrometer:

A

The type of psychrometer most used in coating inspection. It is used to
measure the ambient air temperature to calculate dew point and relative humidity

29
Q

Wind Speed Monitor:

A

An instrument to help decide if conditions are appropriate for coating
application projects

30
Q

Metalizing:

A

Protective coating - Metals and alloys deposited on steel substrates in a liquid state

31
Q

Galvanizing:

A

Protective coating - Steel components dipped into a molten zinc bath to form a metallic coating

32
Q

Powder Coating:

A

A protective coating

Many of the chemistries discussed in this course can be for-
mulated as solids. After electrodeposition, they are heated to a molten state for curing

33
Q

Additives:

A

Components of a coating, typically added in small amounts to perform a specific function

34
Q

Adhesion:

A

The process in which dissimilar molecules cling together due to attractive forces. Adhesion can be chemical, mechanical, polar, or a combination of all three

35
Q

Barrier Coatings:

A

A coating that:
(1) has a high resistance to permeation of liquids and/or
gases, or
(2) is applied over a previously coated surface to prevent damage to the underlying coating during subsequent handling.

36
Q

Binder:

A

The nonvolatile (won’t evaporate) portion of the vehicle of a formulated coating material

37
Q

Inhibitive Pigment:

A

A pigment that passivates (less active to environment)
the metal surface by forming a thin, tightly adherent film or by reinforcing and plugging defects in the natural air-formed film

38
Q

Inorganic Coatings:

A

Coatings whose binders are made from non-living things, most com-
monly based on either silicone or zinc

39
Q

Organic Coatings:

A

Coatings whose binders are made from living or once-living things

40
Q

Pigment:

A

The fine solid particles added during the manufacture of a coating which are substantially insoluble in the vehicle, used to impart color, corrosion control, or decorative properties

41
Q

Sacrificial Coatings:

A

Coatings that use a metal that is anodic to steel and corrodes preferen-
tially. Essentially, sacrificial coatings provide cathodic protection, especially in the vicinity of film defects

42
Q

Solvents:

A

Added to coatings to liquefy the binder and allow for application in a productive manner

43
Q

List three (3) desirable properties of a coating?

A 
Chemical Resistance 
  Water Resistance 
  Ease of Application 
  Adhesion to Substrate 
  Cohesive Strength 
  Flexibility and Elongatio
  Impact Resistance 
  Abrasion Resistance 
  Temperature Resistance 
  Dielectric Strength
44
Q

There 6 broad classifications of a coating are:

A 
Organic  
Convertible  
Thermosetting 
Inorganic  
Non-Convertible  
Thermoplastic
45
Q

What are the three methods by which a coating provides corrosion control?

A

Barrier
Inhibitive
Sacrificial

46
Q

What are the three different ways a coating can adhere to the surface?

A

Chemical
Mechanical
Polar
A combination of all thre

47
Q

The two broad classification for curing mechanisms are:

A

Convertible

Non-Convertible

48
Q

What are the two (2) primary components of a liquid applied coating?

A

Pigment

Vehicle (Resin or Binder and Solvent)

49
Q

Acrylic:

A

A type of resin polymerized from acrylic acid, methacrylic acid, esters of these acids,
or acrylonitrile.

50
Q

Alkyd:

A

A type of resin formed by the reaction of polyhydric alcohols and polybasic acids, part of which is derived from saturated or unsaturated oils or fats

NACE (6 decks)

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