Electrodeposition of Dense Chromium Coatings from Molten Salt Electrolytes

reportActive / Technical Report | Accession Number: ADA235978 | Open PDF

Abstract:

Our research has showed the feasibility by pulsed current of chromium plating on nickel, iron, 4340 alloy. All the samples had a flat surface. The morphology of the deposits were examined by electronic microscopy. All the observations confirm the compacity of coatings with a uniformity in size of crystals. The good continuity between the deposit and the matrix. The grain size and the preferential orientation in the growth after etching of a cross section. All the trails to obtain a coating inside a nickel or 4340 alloy cylinder were always a complete check.

Author(s):
Lorthioir, G.
Author Organization(s):
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE VITRY-SUR-SEINE (FRANCE)
Descriptive Note:
Final technical rept.
Pagination:
0009

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
R/D-5686-MS-01
Contract/Grant Number(s):
DAJA45-87-C-0047
Monitor Series:
5686-MS-01, ERO
 Subject Terms
Modernization Areas:
Microelectronics
Communities of Interest:
Advanced Electronics
Descriptor(s):
*ELECTRODEPOSITION, MELTS, GRAIN SIZE, CRYSTALS, ETCHING, MICROSCOPY, IRON, COATINGS, DEPOSITS, PULSES, CROSS SECTIONS, HIGH DENSITY, NICKEL, CHROMIUM, ELECTROLYTES, SALTS, PLATING, ELECTRONICS, MORPHOLOGY
Field(s)/Group(s):
Physical Chemistry, Fabrication Metallurgy
Keyword(s):
*ELECTROPLATING, *CHROMIUM, NICKEL IRON ALLOY 4340
Report Date:
1991 Apr 01