Modern Nitriding Processes

2000 ◽  
pp. 159-169
Keyword(s):  
Case History ◽  
Plasma Nitriding ◽  
Ring Gear ◽  
Internal Ring ◽  
Ion Nitriding ◽  
Ion Plasma

Abstract Several limitations in achieving optimal gear performance with conventional nitriding have led researchers to work on a variety of novel and improved nitriding processes. Of these, ion/plasma nitriding offers some promising results, which are reviewed in this chapter. The chapter concludes with a case history describing the application of ion nitriding to an internal ring gear of an epicyclic gearbox.

Control of the Process Gas in Plasma Conditions

2003 ◽  
pp. 139-151
Keyword(s):  
Mass Spectrometry ◽  
Plasma Nitriding ◽  
Gas Analysis ◽  
Control Analysis ◽  
Ion Nitriding ◽  
Zone Formation ◽  
Process Gas ◽  
Gas Control ◽  
Kinetics Of

Abstract Process gas control for plasma (ion) nitriding is a matter of estimating the flows necessary to accomplish the required surface metallurgy. This chapter reviews several studies aimed at better understanding process gas control in plasma nitriding and its influence on compound zone formation. Emphasis is placed on the effect of sputtering on the kinetics of compound zone formation. The discussion covers the processes involved in process gas control analysis by photo spectrometry and mass spectrometry and the difficulties associated with gas analysis.

scholarly journals Micro Abrasive Wear Behaviour Study of Carburization and Ion Plasma Nitriding of P20 Steel

2016 ◽  
Vol 19 (3) ◽  
pp. 686-694 ◽  
Author(s):  
Henrique Solowej Medeiros Lopes ◽  
Jeferson Aparecido Moreto ◽  
Marcos Dorigão Manfrinato ◽  
Nilson Cipriano da Cruz ◽  
Elidiane Cipriano Rangel ◽  
...  
Keyword(s):  
Abrasive Wear ◽  
Plasma Nitriding ◽  
Wear Behaviour ◽  
Ion Plasma ◽  
Abrasive Wear Behaviour ◽  
Behaviour Study

scholarly journals Advances in Plasma Ion Nitriding

2019 ◽  
Author(s):  
Ralph Poor
Keyword(s):  
Glow Discharge ◽  
High Voltage ◽  
High Speed ◽  
Gas Flow ◽  
Plasma Nitriding ◽  
Ion Nitriding ◽  
High Voltage Power Supply ◽  
Process Gas ◽  
Detection Technology ◽  
Control Electronics

Abstract The ion or plasma nitriding process has been around for many decades. Developed in the late 1930s, the process was used extensively in Europe. During the 1980s, the process became more popular in the U.S., and many systems were purchased. Early on, the process was not widely understood, and some applications were not a good fit. As plasma nitriding advantages and limitations became realized, the process found its niche in many different industries. Very demanding applications proved to be good applications for ion over gas nitriding. In general, plasma nitriding uses high voltage power operating in the 500–100VDC range, often conducting hundreds of amps to power the process by activating the glow discharge. The glow discharge is not only capable of heating the parts but also ionizes the atmosphere to allow the process to operate. This paper provides insight into plasma nitriding and discusses new advances, widening the range of applications for the process. Many of the advances are in the form of advanced process control electronics, mass flow controllers for process gas flow, and, most importantly, newer high voltage power supply designs with high speed microprocessor arc detection technology.

scholarly journals Influence of nitrogen pressure and electrical parameters of a glow discharge on the process of ion plasma nitriding of steel

2019 ◽  
Vol 1393 ◽  
pp. 012111 ◽  
Author(s):  
V O Oskirko ◽  
I M Goncharenko ◽  
A P Pavlov ◽  
A N Zakharov ◽  
V A Semenov
Keyword(s):  
Glow Discharge ◽  
Plasma Nitriding ◽  
Nitrogen Pressure ◽  
Electrical Parameters ◽  
Ion Plasma

Cooling System Design of Ion Nitriding and PCVD Composite Treatment Furnace

2013 ◽  
Vol 448-453 ◽  
pp. 3462-3466
Author(s):  
Z.J. Zuo ◽  
Si Bi ◽  
L.R. Fu ◽  
Z.Q. Weng ◽  
S.H. Peng
Keyword(s):  
System Design ◽  
Cooling System ◽  
Plasma Nitriding ◽  
Water System ◽  
Cooling Water ◽  
Vacuum System ◽  
Vacuum Furnace ◽  
Ion Nitriding ◽  
Precise Calculation ◽  
Nitriding Furnace

Keywords: ion nitriding furnace cooling system vacuum system Abstract. About fuction of vacuum plasma nitriding furnace cooling system, and its design and calculation of main parts, in particular control of water consumption. The cooling water system have been set into the water flowing through the four heat shield, and gradually take the heat, then the coolant out by outlet pipe. Cooling water flows through layers of insulation to varying degrees of cooling, to ensure that each level of temperature, precise calculation of water flow can only be guaranteed to ensure the maximum water savings and cooling the furnace down. This article provide the basis for vacuum furnace cooling system design in the future.

scholarly journals Ion-plasma nitriding as a method of instruments and parts durability

2017 ◽  
Vol 789 ◽  
pp. 012046
Author(s):  
A.D. Samigullin ◽  
A.T. Galiakbarov ◽  
R.T. Galiakbarov ◽  
A.R. Samigullina
Keyword(s):  
Plasma Nitriding ◽  
Ion Plasma

Plasma Ion Nitriding of Low Carbon Stainless Maraging Steel

2015 ◽  
Vol 830-831 ◽  
pp. 675-678
Author(s):  
M. Agilan ◽  
T. Venkateswran ◽  
D. Sivakumar ◽  
Bhanu Pant
Keyword(s):  
Maraging Steel ◽  
Plasma Nitriding ◽  
Nitrided Layer ◽  
Surface Hardness ◽  
Case Depth ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
Ion Nitriding ◽  
X Ray ◽  
Stainless Maraging Steel

Low carbon stainless maraging steel (0.03%C-12%Cr-10Ni-0.6Mo-0.2Ti) is being used widely for various components of the aerospace engines. To improve the wear resistance of the steel various surface hardening processes are being utilized to improve the surface hardness above 900HV. In this present research, plasma nitriding was carried out at two different temperatures of 450 °C and 475 °C for the holding duration of 10 hrs. Temperature of the nitrding process was ensured below the ageing temperature (500 °C) of the steel to avoid lowering of mechanical properties. Effect of plasma nitriding parameters on the surface hardness, case depth, microstructure and phases present in the nitrided layer were investigated in detail using microhardness analysis across the nitrided layer, X-ray diffraction (XRD), optical microscopy and scanning electron microscopy (SEM). It was observed that increase in nitriding temperature increased the surface hardness and case depth. In addition, the presence of Fe3N and Fe4N phases in the nitrided layer were observed using X-ray diffraction technique.

Formation of coatings on bearing steel ShKh15 during ion-plasma nitriding and subsequent quenching with tempering

1990 ◽  
Vol 32 (9) ◽  
pp. 650-655 ◽  
Author(s):  
O. V. Zaitsev ◽  
V. G. Kaplun ◽  
S. V. Ivashchuk ◽  
P. E. Filyushin
Keyword(s):  
Plasma Nitriding ◽  
Bearing Steel ◽  
Steel Shkh15 ◽  
Ion Plasma ◽  
Subsequent Quenching
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