DEFSTAN 03-41/1(2008) : 2008

Foreword
Introduction
1 Scope
2 Warning
3 Normative References
4 Abbreviations
5 Definitions
   5.2 Process Control Schedule
   5.3 Significant surface
6 Information to be Supplied by the Purchaser
7 Process Control
8 Process Requirements
   8.1 Preceding Electrodeposition Process
       8.1.3 Post-electrodeposition heat treatment
   8.2 The trivalent chromium passivation process
       8.2.3 Process sequence
       8.2.4 Coating thickness
       8.2.5 Post-passivation supplementary treatments
9 Inspection and Test
   9.1 Visual inspection
   9.2 Salt spray test
   9.3 Torque/tension test
10 Compliance
Annex A - Guidance on Trivalent Chromium Passivation
          of Zinc-Base Electrodeposits
   A.1 Comments on the Traditional Hexavalent Chromium
       Passivation Process
       A.1.1 Basic features
       A.1.2 Health and safety issues
   A.2 Trivalent-Chromium Passivates for Zinc-Base
       Electrodeposits
       A.2.2 The corrosion protection mechanism
       A.2.3 The trivalent-chromium process
             A.2.3.1 Basic Process features
             A.2.3.2 Process temperature
             A.2.3.3 Control of zinc and iron content of
                     passivation solution
             A.2.3.4 Rinsing
       A.2.4 Sealers/Topcoats
             A.2.4.1 Sealers
             A.2.4.2 Other protective topcoats
             A.2.4.3 Torque-tension modifiers
       A.2.5 Visual Appearance of Trivalent Chromium Passivates
       A.2.6 Applicator Considerations and Process Validation
Annex B - Trivalent-Chromium Passivation Process
   B.1 General
   B.2 Passivation Conditions
   B.3 Other Aspects of Process Control
       B.3.1 Drying
       B.3.2 Agitation
   B.4 The Analysis of the Passivation Solution