The Electroplating of Laminated Chromium.

reportActive / Technical Report | Accession Number: ADA162751 | Open PDF

Abstract:

A microprocessor-controlled flow plating process was developed to deposit laminated chromium consisting of alternating layers of low contraction LC and high contraction HC chromium. The automated plating system contains a large number of variable parameters designed to allow the use of multiple plating modes. The available modes include a combination of direct current, interrupted, periodic reverse, pulse, and laminated chromium plating. The laminated plating experiments were conducted at LCHC solution temperatures of 85 and 55 C, current densities of 120 and 45 Adm sq, and at LCHC duty cycles to produce spacings between 0l01 and 2.7 micrometers. Under these plating conditions, deposits with hardness values between 655 and 1089 KHN and tensile strengths between 6.8 and 57.2 were obtained.

Author(s):
Chen, E. S. ; Capsimalis, G. P. ; Weigle, G. R.
Author Organization(s):
ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY CLOSE COMBAT ARMAMENTS CENTER
Descriptive Note:
Final rept.,
Supplementary Note:
Presented at 12th International Conference on Metallurgical Coatings, Los Angeles, CA, 15-19 Apr 85.
Pagination:
0024

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ARCCB-TR-85002, SBI-AD-E440 311
Monitor Series:
AD-E440 311
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.2_Understand; JCA_6.1.3_Switching and Routing; JCA_6_Net Centric; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_6.1_Information Transport
Communities of Interest:
Weapons Technologies
Descriptor(s):
*LAMINATES, *CHROMIUM, *ELECTROPLATING, TENSILE STRENGTH, AUTOMATION, LAYERS, PARAMETERS, CRACKING(FRACTURING), CURRENT DENSITY, VARIABLES, DEPOSITS, CRACK PROPAGATION, THERMAL EXPANSION, REVERSIBLE, VALUE, DIRECT CURRENT, HARDNESS, CONTRACTION, PLATING
Field(s)/Group(s):
Laminates and Composite Materials, Metallurgy and Metallography, Fabrication Metallurgy
Report Date:
1985 Nov 01