Our understanding of coatings is mostly in terms of hardness, here are a few simple examples:

1、A customer previously used a pure zirconia product, which was too fragile, and wanted to apply zirconia to the surface for wear resistance.

The client assumed zirconia coatings would be equally hard due to the material's high hardness. This assumption is incorrect, as zirconia coatings are primarily used in our industry for their heat resistance—particularly in applications like blades and boat plates. While zirconia spraying focuses on thermal durability, its wear resistance falls significantly short compared to tungsten carbide coatings and chromium oxide coatings.

This is to judge the performance of the coating by the properties of the material.

2、A customer previously used tungsten steel tools, but because of the high price, they want to spray a layer of tungsten carbide on the surface of the mold steel instead of pure tungsten steel mold.

Tungsten steel, also called tungsten cobalt alloy, is an alloy sintered from tungsten carbide and cobalt. Such an alloy is completely different from our coating structure. The difference in structure leads to a great difference in application and performance.

3、A customer who previously used silicon carbide products wanted to be able to spray silicon carbide instead.

The customer provided silicon carbide powder for our spraying process. After conducting research, they noted that plasma's high temperature enables the spraying of various powders. While this principle holds theoretical validity, practical challenges arise as many powders undergo phase transitions during application. In our spraying process phase transition encounters instability where high-temperature environments trigger material transformations. Some components decompose under elevated temperatures, resulting in unusable coatings or even failure to form a coating at all. To date, we have not identified any mature silicon carbide powder available on the market that is suitable for spraying. The powder we use melts stably at high temperatures, and even when phase transitions occur, parameters can be adjusted to control their intensity. It's important to note that not all powders are compatible with this spraying process.

We are a professional team, will recommend appropriate process according to the customer's situation, so that customers have a better understanding of the formation and performance of the coating.