Accession Number:

ADA235978

Title:

Electrodeposition of Dense Chromium Coatings from Molten Salt Electrolytes

Descriptive Note:

Final technical rept.

Corporate Author:

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE VITRY-SUR-SEINE (FRANCE)

Personal Author(s):

• Lorthioir, G.

Report Date:

1991-04-01

Pagination or Media Count:

9.0

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.

Descriptors:

• *ELECTRODEPOSITION
• MELTS
• GRAIN SIZE
• CRYSTALS
• ETCHING
• MICROSCOPY
• IRON
• COATINGS
• DEPOSITS
• PULSES
• CROSS SECTIONS
• HIGH DENSITY
• NICKEL
• CHROMIUM
• ELECTROLYTES
• SALTS
• PLATING
• ELECTRONICS
• MORPHOLOGY

Subject Categories:

• Physical Chemistry
• Fabrication Metallurgy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE