Cobalt Coating Q&A
Q1: What is cobalt coating?
A1: Cobalt coating is a thin layer of cobalt applied to surfaces such as metallic surfaces to improve their resistance to wear and corrosion. It is most often used on cutting tools and other parts exposed to high temperatures and friction. Cobalt coating is also known as cobalt plating, or hard facing.
Q2: What are the benefits of cobalt coating?
A2: Cobalt coating provides added protection against wear and corrosion. It also improves mechanical properties such as wear resistance and strength. Cobalt coating extends the lifetime of parts,besides, it can improve the performance of parts in high-temperature and abrasive environments,such as those found in jet engines and deep water drilling rigs.
Q3: How is cobalt coating applied?
A3: Cobalt coating is applied using thermal spraying techniques such as plasma arc welding,arc-spraying and flame-spraying. Plasma arc welding is the most commonly used method of applying cobalt coating. In this process, an electric arc passes between two electrodes, one of which contains cobalt, melting the metal and spraying it onto the surface of the part being coated.
Q4: What are the considerations for choosing cobalt coating?
A4: Some key considerations should be taken into account when evaluating which cobalt coating is best for a particular application. These include the target surface for the coating, the coating thickness required, desired surface finish, resistivity, temperature resistance and other application-specific requirements. It is important to consult with a qualified coating provider such as EonCoat before making a decision on the best cobalt coating solution.
Q5: What is the life expectancy of cobalt coating?
A5: Cobalt coating can last for many years under normal use, depending on the application. For example, when applied to cutting tools and machined parts, cobalt coating can last up to 10 years or more. However, factors such as environment, material properties, and application conditions should all be considered to ensure the longest possible life.
