solidification
ELECTRODEPOSITED NI-BASED
NANOCOMPOSITES
ELECTRODEPOSITION
• Electroplating is often also called "electrodeposition“.
• It’s a process using electrical current to reduce cations of a desired material from a solution and coat that material as a thin film onto a conductive substrate surface.
• The overall process is also known as electrolysis.
OBJECTIVE
• To apply thin films of material to the surface of an object to change its external properties such as to increase corrosion protection, increase abrasion resistance, improve decorative quality or simply to deposit a layer which is part of a more complicated device.
• MECHANICAL PROPERTIES: Mechanical properties of the electrodeposited film depend to a considerable extent on the types and amounts of growth-inhibiting substance at the cathode surfaces.
• ADHESION: It is desirable that the substrate and the deposited metal interdiffuse with interlocking grains to give a continuous interfacial region.
APPLICATIONS
• Decoration: Coating a more expensive metal onto a base metal surface in order to improve the appearance. Applications are jewellery , furniture fittings, builders’ hardware and tableware.
• Protection: Corrosion-resistant coatings such as chromium plating of automobile parts and domestic appliances, zinc and cadmium plating of nuts, screws and electrical components. Wear-resistant coatings such as nickel or chromium plating of bearing surfaces and worn shafts and journals.
• Electroforming: Manufacture of sieves, screens, dry shaver heads, record stampers, moulds, and dies.
• Enhancement: coatings with improved electrical and thermal conductivity, solderability, reflectivity etc.
• nano-composite coatings can give various properties, such as wear resistance, high-temperature corrosion protection, oxidation resistance and self-lubrication, to a plated surface.
• Research on electrodeposition of nano-composite coatings has been attention directed towards the
NANOCOMPOSITES
ELECTRODEPOSITION
• Electroplating is often also called "electrodeposition“.
• It’s a process using electrical current to reduce cations of a desired material from a solution and coat that material as a thin film onto a conductive substrate surface.
• The overall process is also known as electrolysis.
OBJECTIVE
• To apply thin films of material to the surface of an object to change its external properties such as to increase corrosion protection, increase abrasion resistance, improve decorative quality or simply to deposit a layer which is part of a more complicated device.
• MECHANICAL PROPERTIES: Mechanical properties of the electrodeposited film depend to a considerable extent on the types and amounts of growth-inhibiting substance at the cathode surfaces.
• ADHESION: It is desirable that the substrate and the deposited metal interdiffuse with interlocking grains to give a continuous interfacial region.
APPLICATIONS
• Decoration: Coating a more expensive metal onto a base metal surface in order to improve the appearance. Applications are jewellery , furniture fittings, builders’ hardware and tableware.
• Protection: Corrosion-resistant coatings such as chromium plating of automobile parts and domestic appliances, zinc and cadmium plating of nuts, screws and electrical components. Wear-resistant coatings such as nickel or chromium plating of bearing surfaces and worn shafts and journals.
• Electroforming: Manufacture of sieves, screens, dry shaver heads, record stampers, moulds, and dies.
• Enhancement: coatings with improved electrical and thermal conductivity, solderability, reflectivity etc.
• nano-composite coatings can give various properties, such as wear resistance, high-temperature corrosion protection, oxidation resistance and self-lubrication, to a plated surface.
• Research on electrodeposition of nano-composite coatings has been attention directed towards the