Chapter 11 Surface Preparation Instrumentation Flashcards

1
Q
  1. Types of soluble salt contamination include:
A

Chlorides, Sulfates, Nitrates

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2
Q
  1. If inspection is to be effective with regards to soluble salts, the specification should very clearly state:
A
  • Limits of soluble salts to be accepted
  • Specific salts to be limited on the substrate
  • Test method to use
  • Frequency of testing
  • Where to administer tests
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3
Q
  1. Test for soluble salts include:
A
  • Potassium ferricyanide
  • Bresle patch
  • Sleeve test
  • Soluble salt meters
  • Conductivity
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4
Q
  1. Depth of surface profile can be evaluated by several methods:
A

ISO comparators
Replica tape
Digital profile gauge

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5
Q
  1. The ISO comparator grades may be recorded:
A
Finer-than-Fine
Fine
Medium
Coarse
Coarser-than-Coarse
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6
Q
  1. The two types of replica tape that are commonly used:
A
Coarse (20 to 64 um)
Extra Coarse (38 to 115 um)
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7
Q
  1. List the standards for using the replica tape:
A

NACE Standard SP0287
ASTM D 4417
Method C
ISO 8503-5

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8
Q
  1. When using replica tape common error include:
A
  1. Inherent variation in point-to-point profile over the surface being measured.
  2. Dirt particles on either the replica tape or gauge.
  3. Gauge accuracy.
  4. Rubbing technique. Either excessive or inadequate burnishing force.
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