A modern-day alchemy: Double glow plasma surface metallurgy technology

In the long history of science and technology development, one goal is to diffuse solid alloy elements into surface steel materials form alloys with excellent physical chemical properties. On basis plasma nitriding technology, double glow metallurgy has answered this challenge. This which seems be a modern-day alchemy, can use any element in Periodic Table elements, including metal their combinations, many types alloyed layers high hardness, wear resistance, corrosion temperature oxidation resistance on various materials. For example, nickel base alloys, stainless steels, speed steels are formed surfaces ordinary carbon steels; titanium alloy. article briefly introduces formation principle summarizes experimental results industrial applications. The significance development prospect discussed.