Protecting Surfaces with FDA Compliant Coatings
Coating is a technological process by means of which the surface of a particular object is improved in terms of adhesion, corrosion resistance, appearance, functionality, wear and scratch resistance, etc. Coating can be applied to solids, but also liquids and gases.
The most common used procedure to increase the thickness of the oxide layer found on the surface of metal objects and parts, using sulfuric acid as the most common anodizing electrolyte. A consistent and thick oxide layer is formed as a result of electrolyte concentration, right temperature and acidity.
€ Ideal for tight tolerant surfaces and parts
€ Bonding
€ Non-conductive
€ Suitable for welded parts
€ Doesn't change its dimensions
€ Durability to acids, abrasive cleaners and wear and tear
€ Cost-effective compared to other coating options
€ Color variety- anodized aluminum can be dyed in various colors
For example, anodized titanium provides up to 20% increase in fatigue strength, doesn't change dimensions, is bio-compatible, improves surface finish and has anti-galling lubricity.
Common applications include:
Welded assemblies and parts
Precision machines components
Pain base for different surfaces
Aerospace Components and parts
Another type of coating specifically used to increase corrosion and wear resistance is the nickel plated surface. There are two main ways of obtaining nickel plated surfaces:
1. Nickel electroplating. By means of this process, a nickel layer is deposited on a metal part or surface by combining heat treating, cleaning, pickling and etching. The surface preparation is important in this process-prior to coating, the surface must be cleaned from oils, greases, paints, animal and vegetable lubricants, oxides and rust.
2. Electroless nickel plating. A coat of nickel is deposited on a substrate using an auto-catalytic reaction. Unlike the first method, the electroless nickel plating doesn't require passing electric current through the solution in order to form the nickel deposit. Advantages of this coating method include no need for electrical power or complex filtration methods, flexibility, cost-effectiveness, various finishes can be obtained (matte, bright, etc.)
Important features include:
€ Decorative purposes
€ Corrosion protective
€ Luster finish
€ Wear resistance
€ Hardness and durability
€ Protection of magnetic layers from damage
€ Low coefficient of friction
€ Manageable internal stresses
€ Magnetic properties
€ Controlling emissivity, reflectivity and lubricity
Common applications include:
Exhaust pipes
Bumpers
Wire racks
Appliances
Lighting fixtures
Rims
Paper handling equipment
Engineering coating applications
Circuit board manufacturing
Bathroom fixtures
Automotive industry
Kitchen utensils
Nickel coated surfaces are able to cover all imperfections of the base metal, being extensively used in decoration and other such applications. Because it maintains its luster for a long time and acts as a barrier against corrosion, it is an effective coating compared to copper or brass.
The most common used procedure to increase the thickness of the oxide layer found on the surface of metal objects and parts, using sulfuric acid as the most common anodizing electrolyte. A consistent and thick oxide layer is formed as a result of electrolyte concentration, right temperature and acidity.
€ Ideal for tight tolerant surfaces and parts
€ Bonding
€ Non-conductive
€ Suitable for welded parts
€ Doesn't change its dimensions
€ Durability to acids, abrasive cleaners and wear and tear
€ Cost-effective compared to other coating options
€ Color variety- anodized aluminum can be dyed in various colors
For example, anodized titanium provides up to 20% increase in fatigue strength, doesn't change dimensions, is bio-compatible, improves surface finish and has anti-galling lubricity.
Common applications include:
Welded assemblies and parts
Precision machines components
Pain base for different surfaces
Aerospace Components and parts
Another type of coating specifically used to increase corrosion and wear resistance is the nickel plated surface. There are two main ways of obtaining nickel plated surfaces:
1. Nickel electroplating. By means of this process, a nickel layer is deposited on a metal part or surface by combining heat treating, cleaning, pickling and etching. The surface preparation is important in this process-prior to coating, the surface must be cleaned from oils, greases, paints, animal and vegetable lubricants, oxides and rust.
2. Electroless nickel plating. A coat of nickel is deposited on a substrate using an auto-catalytic reaction. Unlike the first method, the electroless nickel plating doesn't require passing electric current through the solution in order to form the nickel deposit. Advantages of this coating method include no need for electrical power or complex filtration methods, flexibility, cost-effectiveness, various finishes can be obtained (matte, bright, etc.)
Important features include:
€ Decorative purposes
€ Corrosion protective
€ Luster finish
€ Wear resistance
€ Hardness and durability
€ Protection of magnetic layers from damage
€ Low coefficient of friction
€ Manageable internal stresses
€ Magnetic properties
€ Controlling emissivity, reflectivity and lubricity
Common applications include:
Exhaust pipes
Bumpers
Wire racks
Appliances
Lighting fixtures
Rims
Paper handling equipment
Engineering coating applications
Circuit board manufacturing
Bathroom fixtures
Automotive industry
Kitchen utensils
Nickel coated surfaces are able to cover all imperfections of the base metal, being extensively used in decoration and other such applications. Because it maintains its luster for a long time and acts as a barrier against corrosion, it is an effective coating compared to copper or brass.
