ABSTRACT
To effectively describe diffusion surface treatment see Tables 16.1 and 16.2 [1] that describe the temperatures, diffusion surface treatments, and elements of diffusion into steels.
Microwave Carburizing
The AtmoPlas microwave atmospheric plasma technology was officially launched by Dana Corp. in 2004 [2]. It is unique in its ability to generate and sustain plasma at atmospheric pressure. Plasma, a partially ionized gas, is crucial because it is an efficient absorber for microwaves (using up to 95% of the energy) and can rapidly reach very high temperatures. Once the plasma is ignited and sustained at atmospheric pressure, plasma temperatures can exceed 1200°C (2190°F) in seconds. In heat-treating applications, this offers an advantage over traditional processes that require longer heating times to reach high temperatures. Also, the heat flux can be custom-shaped by
CONTENTS
Methods ................................................................................................................483 Microwave Carburizing ...............................................................................483 Steam Treating ................................................................................................486 Fluidized Bed Treatment ............................................................................... 487 Controlled Nitriding Using the Zeroflow Process ....................................488 Vacuum Carburize ......................................................................................... 489 Low-Pressure Vacuum Carburizing (LPVC) ............................................. 490 Gas Carburizing ............................................................................................ 492 Nitrocarburize and Nitriding ....................................................................... 495 Plasma Nitrocarburizing ............................................................................... 499 Plasma or Ion Nitriding ................................................................................. 499
References .............................................................................................................500 Bibliography ........................................................................................................ 501
controlling the plasma thickness, which is accomplished through the proper placement of the workpiece.
