Plasma Spray Process

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.

Plasma Sprayed Chromium Oxide Coating

The microstructure shows a very dense coating with microhardness values in excess of 1200 HV 0.3