HVOF has become the quality standard for carbide and cermet materials as gas velocities over 6,000 feet per second allow particle velocities over 3,000 feet per second. The result is coating approaching theoretical density with bond strengths above 10,000 PSI. Since gas temperature are on the order of only 6,000 degrees Fahrenheit this is not an appropriate way to apply ceramic materials. PTI has done considerable research and development with HVOF equipment and supplies something over forty coatings with these devices. |