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DEFSTAN 03-40/1(2008) : 2008

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

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withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

ELECTRODEPOSITION OF ZINC-NICKEL ALLOYS
Available format(s)

Hardcopy , PDF

Withdrawn date

31-03-2014

Language(s)

English

Published date

01-01-2008

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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