Lapping or Polishing
March 20, 2019
Phosphate coating is the crystalline coating applied on the ferrous metals to inhibit corrosion. The phosphate coating lends a gray to black appearance of the surface.
In many applications, phosphate coating is followed by oil coating (P & O) to improve its rusting and anti-galling properties.
In this post, we will introduce you to different types of phosphate coating, their industrial applications, and their benefits.
Types of Phosphate Coating
Phosphate coatings are divided into two types as shown below.
Manganese Phosphate Coating – Type M:
The manganese phosphate coatings are available in black and dark gray colors. They are used as corrosion protection agents, anti-galling agents, and as a lubricant.
These coatings have the highest hardness and superior corrosion resistance among all general phosphate coatings.
The treatment time often varies from five to fifteen minutes. Some of its features and applications are:
Zinc Phosphate Coatings – Type Z:
Zinc phosphate coating is mainly used as rust-proofing. These coatings are usually applied by spraying or immersion.
The zinc phosphate coatings are available in black and dark gray colors and are lighter in comparison to manganese phosphate coatings.
Industries using Phosphate Coatings
Phosphate coatings are utilized in various industries. Below are some of the industries served.
Advantages of Phosphate Coating
The following are a few advantages of using phosphate coatings
All the above-given information validates why phosphate coating is gaining popularity across various industries. Along with selecting the coating for your industrial application, it is very important that you procure them from a well-known manufacturer.
Microsurface Corporation in San Jose, California is one of the leading and well-known applicators of engineered lubricants, coatings, and manufacturer of Timesaver Lapping Compounds.