Differences between Teflon coating and metal ceramic coating

There are significant differences between Teflon coating and metal ceramic coating in many aspects. The following is a detailed analysis of the differences between the two coatings:

Composition and materials

Teflon coating: Teflon coating, also known as Teflon or PTFE (polytetrafluoroethylene), is a high-performance coating with polytetrafluoroethylene as the base resin. It is mainly composed of organic chemical polytetrafluoroethylene and some additives.
Metal ceramic coating: Metal ceramic coating is a coating material made of a mixture of metal and ceramic powder. Its main components include metal (such as nickel, chromium, etc.) and ceramic powder (such as aluminum oxide, zirconium oxide, etc.).

Performance characteristics

1. Hardness and wear resistance:
Teflon coating: Although Teflon coating has a certain wear resistance, its hardness is relatively low, generally between 23H.
Metal ceramic coating: Metal ceramic coating contains high-hardness ceramic particles, so its hardness is usually higher and its wear resistance is also better.

2. Temperature resistance:
Teflon coating: Teflon coating may become unstable in high temperature environment (especially over 250℃), and even decompose to produce harmful substances. Its long-term use temperature generally does not exceed 260℃, and the short-term use temperature can reach about 300℃.
Metal ceramic coating: Due to its material properties, metal ceramic coating usually has higher temperature resistance and can remain stable at higher temperatures.

3. Corrosion resistance:
Teflon coating: Teflon coating is almost not corroded by drugs, has excellent chemical stability, and can resist corrosion from a variety of chemicals.
Metal ceramic coating: Although metal ceramic coating also has certain corrosion resistance, its corrosion resistance may vary depending on the specific composition and ratio. In some highly corrosive environments, special attention may need to be paid to its corrosion resistance.

4. Other properties:
Teflon coating: It has excellent non-stick, sliding and moisture resistance, which makes it widely used in non-stick pans, baking molds and other fields.
Metal ceramic coating: In addition to the hardness, wear resistance and temperature resistance mentioned above, metal ceramic coatings may also have other specific properties, such as high-temperature insulation, oxidation resistance, etc., depending on their composition and preparation process.

Application fields

Teflon coating: Due to its excellent non-stickiness, chemical stability and temperature resistance, Teflon coating is widely used in surface treatment of cookware (such as non-stick pans), baking equipment, electric irons, and pipes, containers, pumps, valves and other parts in the industrial field.
Metal ceramic coating: Metal ceramic coating is more suitable for surface coating of mechanical parts in high temperature, high pressure, high speed and strong corrosive environment due to its high hardness, wear resistance and temperature resistance, such as gas turbine blades, turbine blades, etc.

In summary, Teflon coating and metal ceramic coating have significant differences in composition, performance characteristics and application fields. When choosing which coating to use, it is necessary to consider comprehensively according to the specific use environment and requirements.