Classification of Thermal Spraying Coating

       

Thermal spraying coating can be divided
into:

1. Wear resistant coating. It includes anti
adhesion wear, surface fatigue wear coating and erosion resistant coating. In
some cases, there are anti low temperature (< 538oC) wear coatings and anti
high temperature (538 ~ 843oc) wear coatings.

2. Heat resistant and oxidation resistant
coating. The coating includes coatings applied in high temperature process
(including oxidation atmosphere, corrosive gas, erosion above 843oc and thermal
barrier) and molten metal process (including molten zinc, molten aluminum,
molten iron and steel, molten copper).

3. Atmospheric and immersion corrosion
resistant coating. Atmospheric corrosion includes corrosion caused by
industrial atmosphere, Salt atmosphere and field atmosphere; Immersion
corrosion includes corrosion caused by drinking fresh water, non drinking fresh
water, hot fresh water, salt water, chemistry and food processing.

4. Conductivity and resistance coating. The
coating is used for conductivity, resistance and shielding.

5. Restore dimensional coating. The coating
is used for iron-based (machinable and grindable carbon steel and
corrosion-resistant steel) and non-ferrous metal (nickel, diamond, copper,
aluminum, titanium and their alloys) products.

6. Gap control coating of mechanical parts.
The coating is grindable.

7. Chemical corrosion resistant coating.
Chemical corrosion includes the corrosion of various acids, alkalis, salts,
various inorganic substances and various organic chemical media.

Among the above coating functions,
wear-resistant coating, heat-resistant anti-oxidation coating and chemical
corrosion-resistant coating are closely related to the production of
metallurgical industry.

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