Effect of pulse repetition time on surface properties of pulsed plasma nitrided AISI steel. Decreasing chromium precipitation in AISI stainless steel during the plasma-nitriding process. This concept of plasma generation and control was put into practice. Metallurgical response of an AISI steel to different plasma nitriding gas mixtures. Hardness distribution at the vicinity of the inner surface of the through-hole in the micro-nozzle outlet. Effects of various gas mixtures on plasma nitriding behavior of AISI steel. As suggested in [ 18 ], the flow rate ratio of H 2 to N 2 in the mixture gas also affected the NH-radical yields in the generated plasmas.
The structural and mechanical properties especially the fatigue behaviour of the raw, quenched and plasma nitrided AISI steel were examined. The effects of plasma nitriding process parameters on the wear characteristics of AISI M2 tool steel. Materials Characterization, 61 10 , Surface and Coatings Technology, , SS Don’t have an account? Characterisation of nitrogen-bearing surface layers on Nibase superalloys. Advanced Science Letters, 22 11 ,
These nozzle outlets contact and hit the joined surfaces; the stainless steel nozzles often deform and become damaged in the joining process.
Discussion Several surface modification processes are thought to improve the mechanical and chemical properties of through-hole surfaces in stainless steel pipes and nozzles. Metallurgical response of an AISI steel to different plasma nitriding gas mixtures. Thin Solid Films, 2 Wasa conceived and designed the experiments; T.
This means that the inner surface of the pipes should be nitrided to have a nitrogen content value that is higher than the maximum nitrogen solubility limit of 0. Applied Physics, 24 7 Advanced Science Letters, 22 11 Materials Characterization, 49 3 Thin Solid Films, 2 Effect of duty cycle on surface properties of AISI using a pulsed plasma nitriding process. Options for accessing this content: It was found that plasma ion nitriding process is more reliable as compared to other existing processes in use.
Effect of frequency on the properties of plasma nitrided AISI steel. Materials Science and Engineering: Surface and Coatings Technology,SS Effects of hydrogen on iron nitriding in a pulsed plasma. Plasma nitriding of stainless steels at low temperatures.
The solubility of nitrogen atoms in the steel matrix have been explained through Fe-N system. Procedia Engineering, 68, JWRI, 22 1 Thermodynamic analysis of the FeN system using the compound-energy model with predictions of the vibrational entropy. Surface and Coatings Technology, Wear, Metallurgical and Materials Transactions A, 46 12 The hydrogen—nitrogen mixed gas was blown into the inlet of these nozzles.
A Review on Plasma Ion Nitriding (PIN) Process
Since the metallic melts, the solders, and the chemically active agents flow along plaama inside, its inner surface must be hardened and chemically modified. Glow-discharge nitriding of sintered stainless steels. Figure 8 depicts the optical microscopic image of the specimen with hardness measurement locations from 1 to 3 at the vicinity of the nozzle outlet inner surface.
Nitride precipitation in salt-bath nitrided interstitial-free steel.
Low Temperature Plasma Nitriding of Inner Surfaces in Stainless Steel Mini-/Micro-Pipes and Nozzles
Table 2 Hardness distribution at the vicinity of the inner surface of the through-hole in the mini-nozzle outlet. International Journal of Advancements in Technology, 2 4 Synthesis of metastable phases via pulsed-laser-induced reactive quenching at liquid-solid interfaces.
Each nitriding unit in the cascaded system works as a miniature nitriding reactor with a substantial reduction of processing time in heating and cooling. Catalysis Letters, 13 Electric Arc Furnace Conference Proceedings pp.
nitridnig Abstract In this review paper, an effort has been made to understand the plasma ion nitriding process and other existing nitriding processes used in industries.