Plating bath for obtaining high strength, low stress nickel coatings on complex shapes having sharp corners
An electroplating bath capable of providing a nickel coating having excellent hardness, high tensile strength, and low internal stress is provided which contains nickel sulfamate, boric acid, nickel chloride hexahydrate, an aromatic sulfonic acid such as naphthalene trisulfonic acid and a surface tension-maintaining agent such as sodium lauryl sulfate. The nickel plating bath of the invention is capable of providing a nickel coating on surfaces of electrically conductive objects such as metals and metal alloys, and the resulting plated articles have tensile strengths of up to about 275 kpsi. The electroplating bath will be particularly useful in forming bright, lustrous, hard nickel coatings on electrically conductive surfaces having complex shapes and sharp corners. A method for electroplating conductive objects using this nickel bath is also provided.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Dept. of Energy
- Patent Number(s):
- PATENTS-US-A7478374
- Application Number:
- ON: DE91011577; PPN: US 7-478374
- OSTI ID:
- 5676586
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NICKEL
COATINGS
ELECTROPLATING
BORIC ACID
HARDNESS
INORGANIC ACIDS
INVENTIONS
SHAPE
DEPOSITION
ELECTRODEPOSITION
ELECTROLYSIS
ELEMENTS
HYDROGEN COMPOUNDS
LYSIS
MECHANICAL PROPERTIES
METALS
PLATING
SURFACE COATING
TRANSITION ELEMENTS
360101* - Metals & Alloys- Preparation & Fabrication