DEFSTAN 03-40/1(2008) : 2008
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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ELECTRODEPOSITION OF ZINC-NICKEL ALLOYS
Hardcopy , PDF
31-03-2014
English
01-01-2008
Important note : Users cannot be edited or removed once added to your Multi user PDF.
Foreword
Introduction
1 Scope
2 Warning
3 Normative References
4 Abbreviations
5 Definitions
5.2 Process control schedule
5.3 Significant surface
5.4 Shot peening
5.5 Tensile strength of steels
5.5.2 Tensile strength/hardness relationship
6 Information to be Supplied by the Purchaser
7 Process Control
8 Process Requirements
8.1 Ferrous substrates
8.1.1 General
8.1.2 Heat treatment
8.1.3 Surface preparation
8.1.3.1 General requirements
8.1.3.2 Cleaning
8.1.3.3 Masking
8.1.3.4 Activation
8.1.4 Zinc-nickel electrodeposition process
8.1.4.3 Coating composition
8.1.4.4 Coating thickness
8.1.5 Washing
8.1.6 Passivation
8.1.7 Post treatment
8.1.8 Post-electrodeposition heat treatment
8.2 Non-ferrous substrates
8.2.1 Preparation for electrodeposition
8.2.2 Electrodeposition of zinc-nickel
8.2.3 Post-electrodeposition treatment
9 Inspection and Test
9.1 General procedure
9.2 Selection of test samples
9.3 Visual inspection
9.4 Adhesion
9.5 Thickness of coating
9.5.2 Local thickness
9.5.3 Average thickness
9.6 Salt spray test
9.7 Composition of coating
9.8 Treatment of items rejected during final inspection
and test
Annex A - Guidance on Zinc-Nickel Electrodeposition
A.1 Introduction
A.2 Zinc Base Alloys
A.2.1 General
A.2.2 Corrosion Behaviour of Zinc Alloy Electrodeposits
on Steel
A.3 Zinc-Nickel Electrodeposition
A.3.1 Basis Materials
A.3.2 Hydrogen embrittlement
A.3.3 Zinc-nickel electrodeposition solutions
A.3.3.2 Acid electrodeposition baths
A.3.3.3 Alkaline electrodeposition baths
A.3.4 Process control
A.3.5 Corrosion behaviour of zinc-nickel electrodeposits
Annex B - Zinc-Nickel Electrodeposition Process
B.1 General
B.2 Electrodeposition Solution and Conditions for the
Production of a Deposit Containing to 15% Nickel from
an Alkaline Bath
B.2.2 Anodes
B.3 The Analysis of Zinc-Nickel Electrodeposition Solution
B.3.2 Analysis of main constituents of alkaline
zinc-nickel electrodeposition solution
B.3.2.1 Analysis of zinc, sodium hydroxide, sodium
carbonate
B.3.2.2 Analysis of nickel
Annex C - Determination of Average Thickness of Zinc-Nickel
Coating
C.1 Solution
C.2 Method
C.3 Calculation
Annex D - Adhesion Tests
D.1 Burnishing Test
D.2 Bend Test
D.3 Scribe Test
Provides guidance for, and specifies the requirements for, the electrodeposition of zinc-nickel alloy coatings on a range of metallic substrates for the provision of corrosion resistance to steel components and galvanic compatibility between some bi-metallic contacting surfaces.
| DevelopmentNote |
This standard is obsolescent because it is no longer required for the procurement of new equipment but is retained for maintenance purposes in support of existing in-service equipment. (05/2013)
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
UK Ministry of Defence Standards
|
| Status |
Withdrawn
|
| SupersededBy |
| DEFSTAN 03-36/2(2010) : 2010 | GUIDANCE TO THE USE OF CADMIUM ALTERNATIVES IN THE PROTECTIVE COATING OF DEFENCE EQUIPMENT |
| DEFSTAN 03-39/1(2008) : 2008 | ELECTRODEPOSITION OF ZINC-COBALT ALLOYS |
| DEFSTAN 03-41/1(2008) : 2008 | TRIVALENT CHROMIUM PASSIVATION TREATMENTS FOR ELECTRODEPOSITED ZINC-BASE COATINGS |
| BS EN ISO 3543:2001 | Metallic and non-metallic coatings. Measurement of thickness. Beta backscatter method |
| BS EN ISO 6507-1:2005 | Metallic materials. Vickers hardness test Test method |
| BS EN ISO 2178:2016 | Non-magnetic coatings on magnetic substrates. Measurement of coating thickness. Magnetic method |
| DEFSTAN 03-21/4(2008) : 2008 | MECHANICAL METHODS FOR THE INDUCEMENT OF RESIDUAL SURFACE COMPRESSIVE STRESSES |
| BS EN ISO 3497:2001 | Metallic coatings. Measurement of coating thickness. X-ray spectrometric methods |
| DEFSTAN 03-4/5(2006) : 2006 | THE PRE-TREATMENT AND PROTECTION OF STEEL ITEMS OF MAXIMUM TENSILE STRENGTH EXCEEDING 1450 MPA |
| BS ISO 9588:2007 | Metallic and other inorganic coatings. Post-coating treatments of iron or steel to reduce the risk of hydrogen embrittlement |
| DEFSTAN 03-41/1(2008) : 2008 | TRIVALENT CHROMIUM PASSIVATION TREATMENTS FOR ELECTRODEPOSITED ZINC-BASE COATINGS |
| BS EN ISO 2177:2004 | Metallic coatings. Measurement of coating thickness. Coulometric method by anodic dissolution |
| DEFSTAN 03-38/1(2007) : 2007 | GUIDANCE FOR THE USE OF ALTERNATIVES TO HEXAVALENT CHROMIUM FOR THE PROTECTIVE COATING OF DEFENCE EQUIPMENT |
| DEFSTAN 03-2/4(2005) : 2005 | CLEANING AND PREPARATION OF METAL SURFACES |
| BS EN ISO 1463:2004 | Metallic and oxide coatings. Measurement of coating thickness. Microscopical method |
| BS EN ISO 2360:2017 | Non-conductive coatings on non-magnetic electrically conductive base metals. Measurement of coating thickness. Amplitude-sensitive eddy-current method |
| BS EN ISO 9227:2017 | Corrosion tests in artificial atmospheres. Salt spray tests |
| DEFSTAN 03-36/1(2005) : 2005 | GUIDANCE TO THE USE OF CADMIUM ALTERNATIVES IN THE PROTECTIVE COATING OF DEFENCE EQUIPMENT |
| BS 6338:1982 | Specification for chromate conversion coatings on electroplated zinc and cadmium coatings |
| DEFSTAN 03-20/3(2005) : 2005 | ELECTRO-DEPOSITION OF ZINC |
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