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ASTM B380-97(2013)

(Test Method)

Standard Test Method for Corrosion Testing of Decorative Electrodeposited Coatings by the Corrodkote Procedure

Standard Test Method for Corrosion Testing of Decorative Electrodeposited Coatings by the Corrodkote Procedure

SIGNIFICANCE AND USE
4.1 Nickel/chromium and copper/nickel/chromium electrodeposited coatings are widely used for decorative and protective applications. The Corrodkote test provides a method of controlling the quality of electroplated articles and is suitable for manufacturing control, as well as research and development.
SCOPE
1.1 This test method covers the Corrodkote2 method of evaluating the corrosion performance of copper/nickel/chromium and nickel/chromium coatings electrodeposited on steel, zinc alloys, aluminum alloys, plastics and other substrates. Note 1—The following ASTM standards are not requirements. They are reference for information only: Practice B537, Specification B456, Test Method B602, and Specification B604.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Nov-2013
ICS
25.220.40 - Metallic coatings
77.060 - Corrosion of metals
Technical Committee
B08 - Metallic and Inorganic Coatings
Drafting Committee
B08.10 - Test Methods
Current Stage
Ref Project

Relations

Replaces
ASTM B380-97(2008)e1 - Standard Test Method for Corrosion Testing of Decorative Electrodeposited Coatings by the Corrodkote Procedure
Effective Date
01-Dec-2013
Referred By
ASTM B537-22 - Standard Practice for Rating of Electroplated Panels Subjected to<brk/> Atmospheric Exposure
Effective Date
01-Dec-2013
Referred By
ASTM B733-22 - Standard Specification for Autocatalytic (Electroless) Nickel-Phosphorus Coatings on Metal
Effective Date
01-Dec-2013
Referred By
ASTM B456-17(2022) - Standard Specification for Electrodeposited Coatings of Copper Plus Nickel Plus<brk/> Chromium and Nickel Plus Chromium
Effective Date
01-Dec-2013

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ASTM B380-97(2013) - Standard Test Method for Corrosion Testing of Decorative Electrodeposited Coatings by the Corrodkote ProcedureASTM B380-97(2013) - Standard Test Method for Corrosion Testing of Decorative Electrodeposited Coatings by the Corrodkote Procedure
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ASTM B380-97(2013) - Standard Test Method for Corrosion Testing of Decorative Electrodeposited Coatings by the Corrodkote Procedure
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B380 − 97 (Reapproved 2013)
Standard Test Method for
Corrosion Testing of Decorative Electrodeposited Coatings
by the Corrodkote Procedure
This standard is issued under the fixed designation B380; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D1193 Specification for Reagent Water
1.1 This test method covers the Corrodkote method of
3. Summary of Test Method
evaluating the corrosion performance of copper/nickel/
3.1 The test is conducted by applying a slurry containing
chromium and nickel/chromium coatings electrodeposited on
corrosivesaltstotestspecimens,allowingtheslurrytodry,and
steel, zinc alloys, aluminum alloys, plastics and other sub-
exposingthespecimenscoatedwiththeslurrytoahighrelative
strates.
humidity for a specified period of time.
NOTE 1—The following ASTM standards are not requirements. They
are reference for information only: Practice B537, Specification B456, 4. Significance and Use
Test Method B602, and Specification B604.
4.1 Nickel/chromium and copper/nickel/chromium elec-
1.2 The values stated in SI units are to be regarded as
trodeposited coatings are widely used for decorative and
standard. No other units of measurement are included in this
protective applications.The Corrodkote test provides a method
standard.
of controlling the quality of electroplated articles and is
suitable for manufacturing control, as well as research and
1.3 This standard does not purport to address all of the
development.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety and health practices and determine the applica-
5.1 The apparatus shall consist of a humidity chamber,
bility of regulatory limitations prior to use.
specimen supports, provision for heating the chamber, and
2. Referenced Documents
provisions for air circulation in the chamber.
2.1 ASTM Standards:
5.2 Drops of moisture that might accumulate on the ceiling
B117 Practice for Operating Salt Spray (Fog) Apparatus
or cover of the chamber of specimen supports shall not be
B456 Specification for Electrodeposited Coatings of Copper permitted to fall on the specimens being tested.
Plus Nickel Plus Chromium and Nickel Plus Chromium
NOTE 2—Suitable apparatus may be constructed from salt-spray equip-
B537 Practice for Rating of Electroplated Panels Subjected
ment by eliminating fog-spray nozzles, substituting water for the salt
to Atmospheric Exposure
solution in the reservoir, adding a manifold for bubbling air through the
B602 Test Method for Attribute Sampling of Metallic and water in the reservoir, and adding a fan for circulating the air in the
chamber with the fan discharge directed across the surface of the water in
Inorganic Coatings
the reservoir.
B604 Specification for Decorative Electroplated Coatings of
5.3 Materials of construction shall not affect the corrosive-
Copper Plus Nickel Plus Chromium on Plastics
ness of the test.
6. Procedure
This test method is under the jurisdiction ofASTM Committee B08 on Metallic
and Inorganic Coatings and is the direct responsibility of Subcommittee B08.10 on
6.1 Corrodkote Slurry—Prepare the Corrodkote slurry in a
Test Methods.
glass beaker by dissolving 0.035 g of reagent grade cupric
The original work in developing the Corrodkote procedure was initiated by the
American Electroplaters’ Society Research Committee, Project No. 15.
nitrate (Cu(NO ) ·3H O), 0.165 g of ACS reagent grade ferric
3 2 2
Current edition approved Dec. 1, 2013. Published December 2013. Originally
chloride (FeCl ·6H O), and 1.0 g of ACS reagent grade
ε1 3 2
approved in 1961. Last previous edition approved in 2008 as B380 – 97(2008) .
ammonium chloride (NH Cl) in 50 mLof water conforming to
DOI: 10.1520/B0380-97R13.
Specification D1193, Type IV. Stir 30 g of water-washed,
Bigge, D. M., “Experience with the Use of the Corrodkote Test,” Proceedings,
Am. Electroplaters’ Soc., Vol. 46, 1959, p. 149.
ceramic-grade kaolin into the solution. Mix the slurry thor-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
oughly and allow it to stand for about 2 min so that the kaolin
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
will become saturated. Mix the slurry thoroughly just before
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. using.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B380 − 97 (2013)
the exposure zone of the humidity chamber.
6.1.1 An alternative method of preparing the Corrodkote
slurry is as follows. Weigh out 2.5 g of cupric nitrate
6.7 Test Cycle—Exposure in the humidity chamber shall be
(Cu(NO ) ·3H O), and dissolve and dilute with distilled water
continuous for periods up to 20 h.Asingle test period up to 20
3 2 2
in a volumetric flask to exactly 500 mL. Weigh out 2.50 g of
h shall be considered as one cycle. Continuous operation
ferric chloride (FeCl ·6H O), and dissolve and dilute with
3 2 implies that the humidity chamber be closed and operated
distilled water in a second volumetric flask to exactly 500 mL.
continuously except for the short interruptions necessary to
(The ferric chloride solution shall be kept in a dark place and
place or remove test specimens. Operations shall be so sched-
stoppered with a rubber or glass stopper when not in use.) (The
uled that these interruptions are held to a minimum. When
ferric chloride solution shall not be more than 2 weeks old,
more than one test cycle of 20 h or less is specified, the test
since older solutions become unstable.) Weigh out 50.0 g of
specimen shall be treated as outlined in 6.9 after each test
ammonium chloride (NH Cl) and dissolve and dilute with
4 cycle. Fresh slurry shall be applied for each succeeding cycle.
distilled water in a volumetric flask to exactly 500 mL. Then
After the last test cycle, the test specimen shall be treated as
measure out exactly 7.0 mL of the cupric nitrate solution, 33.0
outlined in 6.9.
mL of ferric chloride solution, and 10.0 mL of the ammonium
6.8 Period of Test—The period of each test cy
...

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1.1 This test method determines the two-dimensional flexural properties of sandwich composite plates subjected to a distributed load. The test fixture uses a relatively large square panel sample which is simply supported all around and has the distributed load provided by a water-filled bladder. This type of loading differs from the procedure of Test Method C393, where concentrated loads induce one-dimensional, simple bending in beam specimens.  
1.2 This test method is applicable to composite structures of the sandwich type which involve a relatively thick layer of core material bonded on both faces with an adhesive to thin-face sheets composed of a denser, higher-modulus material, typically, a polymer matrix reinforced with high-modulus fibers.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text the inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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