FR2218400A2 - Depositing molybdenum onto substrates - contg. alkaline molybdate, transition metal salt and salt of org. acid - Google Patents
Depositing molybdenum onto substrates - contg. alkaline molybdate, transition metal salt and salt of org. acidInfo
- Publication number
- FR2218400A2 FR2218400A2 FR7306047A FR7306047A FR2218400A2 FR 2218400 A2 FR2218400 A2 FR 2218400A2 FR 7306047 A FR7306047 A FR 7306047A FR 7306047 A FR7306047 A FR 7306047A FR 2218400 A2 FR2218400 A2 FR 2218400A2
- Authority
- FR
- France
- Prior art keywords
- salt
- transition metal
- contg
- org
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/60—Electroplating characterised by the structure or texture of the layers
- C25D5/623—Porosity of the layers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/60—Electroplating characterised by the structure or texture of the layers
- C25D5/625—Discontinuous layers, e.g. microcracked layers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid Thermionic Cathode (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
In the parent patent a deposit of Mo and >=1 transition metal is made by means of a bath contg. an alkaline molybdate, a transition metal salt and an alkaline salt of an organic acid having a mixed alcohols-acids functions; the pH being 9-11; the cathodic current has a density > the 'fissuration threshold', and deposition is carried out for the 'scaling time'. In the addn. a series of layers are deposited with the current density chosen as a function of the layer thickness at which it will not cause fissuration, alternated with layers deposited at a current density and thickness such that fissuration occurs.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7306047A FR2218400A2 (en) | 1973-02-21 | 1973-02-21 | Depositing molybdenum onto substrates - contg. alkaline molybdate, transition metal salt and salt of org. acid |
US05/370,629 US3947331A (en) | 1970-11-30 | 1973-06-18 | Methods for forming an electrolytic deposit containing molybdenum on a support and the products obtained thereby |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7306047A FR2218400A2 (en) | 1973-02-21 | 1973-02-21 | Depositing molybdenum onto substrates - contg. alkaline molybdate, transition metal salt and salt of org. acid |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2218400A2 true FR2218400A2 (en) | 1974-09-13 |
FR2218400B2 FR2218400B2 (en) | 1976-11-05 |
Family
ID=9115159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7306047A Granted FR2218400A2 (en) | 1970-11-30 | 1973-02-21 | Depositing molybdenum onto substrates - contg. alkaline molybdate, transition metal salt and salt of org. acid |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2218400A2 (en) |
-
1973
- 1973-02-21 FR FR7306047A patent/FR2218400A2/en active Granted
Non-Patent Citations (1)
Title |
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NEANT * |
Also Published As
Publication number | Publication date |
---|---|
FR2218400B2 (en) | 1976-11-05 |
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