Special features of joint chromium and molybdenum electrocrystallization surface morphology of physicomechanical properties
The authors studied the effect of molybdenum on the surface structure and certain physicomechanical properties of the electrolytic chromium produced by Cr-Mo electrodeposition from CrO/sub 3/ solutions with added SO/sub 4//sup 2 -/ and SiF/sub 6//sup 2 -/ ions. The results indicate that the changes in hardness, hydrogenation, and internal stresses of the chromium coatings which occur upon alloying with molybdenum are chiefly due to structural changes, while the incorporation of Mo into chromium by itself does not markedly affect these characteristics. The structural changes of chromium which occur following the codeposition of molybdenum evidently are due, not only to a change in the relative concentration of anions in the cathodic film, particularly a decrease in the content of catalytic anions in the film, but also to special features in chromium electrocrystallization, an aspect which requires special consideration involving methods of investigating fine structure and surface composition.
- Research Organization:
- Institute of Physical Chemistry, Moscow (USSR)
- OSTI ID:
- 6965493
- Journal Information:
- Sov. Electrochem. (Engl. Transl.); (United States), Journal Name: Sov. Electrochem. (Engl. Transl.); (United States) Vol. 23:4; ISSN SOECA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM
CHROMIUM ALLOYS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COATINGS
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALLIZATION
DEPOSITION
ELECTROCHEMISTRY
ELECTRODEPOSITED COATINGS
ELECTRODEPOSITION
ELECTROLYSIS
ELECTROLYTES
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
FRACTURE PROPERTIES
HALIDES
HALOGEN COMPOUNDS
HARDNESS
HYDRIDATION
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LYSIS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
METALS
MICROHARDNESS
MICROSTRUCTURE
MOLYBDENUM
MOLYBDENUM ALLOYS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SILICON COMPOUNDS
SILICON FLUORIDES
STRESS ANALYSIS
STRESSES
SULFURIC ACID
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS