Plasma Coating

High Velocity Plasma Coatings

Typical power levels employed are 40-80 KWDC. The additional energy available, coupled with slightly modified torch design, translates to both higher thermal energy and higher particle velocity. The result is more complete melting of high temperature materials (ceramics) and greater integrity of the resultant coating. PTI applies something over two hundred coatings by the complementary plasma techniques.

There are thirty-two significant variables in the plasma coating process. The manipulation of these variables enable coating properties to be tailored to meet the properties desired for each application. It is the control of these variables that determine the repeatability of the process.

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Low Velocity Plasma Coatings

A high temperature plasma stream is created by non-transferred plasma arc within the torch. Many gases may be ionized this way, argon or nitrogen with small additions of hydrogen and helium are popular choices.

In an ionized gas, free electrons have been stripped from the atoms and recombination releases very significant thermal energy. The plasma stream can reach temperatures of 10,000-50,000 degrees Fahrenheit.