Elevated temperature nitrogen plasma immersion ion implantation of AISI 302 austenitic stainless steel

Ma, Xinxin; Jiang, Shaoqun; Sun, Yue; Tang, Guangze; Sun, Min

doi:10.1016/j.surfcoat.2006.09.030

Cited by 14 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The quenched and tempered as-received steel owns an initial nanohardness of 11.1 GPa. The experiments of plasma immersion ion implantation were performed with a DLZ-01 PBII apparatus independently developed by the Harbin Institute of Technology of China, which was illustrated in Figure 1 and detailed in reference [36]. The equipment has a pulse voltage output range of 5-100 kV (pulse width can be adjusted), a maximum average output current of 100 mA, and a maximum peak output current of 50 A.…”

Section: Methodsmentioning

confidence: 99%

“…When the direct manipulation of raw materials is challenging, surface modification emerges as a robust strategy to enhance both performance and durability, particularly for materials subjected to harsh environments or extreme conditions. To enhance surface properties, various advanced surface modification techniques have been developed, including plasma or gas nitriding [33,34], magnetron sputtering [35], and ion implantation [36].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Dose Rate on Tribological Properties of 8Cr4Mo4V Subjected to Plasma Immersion Ion Implantation

Miao,

Niu,

Guo

et al. 2024

Processes

Self Cite

View full text Add to dashboard Cite

The lack of service lifetime of bearings has become a bottleneck that restricts the performance of aero engines. How to solve or improve this problem is the focus of most surface engineering researchers at present. In this study, plasma immersion ion implantation was conducted; in order to enhance the ion implantation efficiency and improve the wear resistance of 8Cr4Mo4V bearing steel, the dose-rate-enhanced method was adopted during ion implantation. The surface roughness, phase constituents, elemental concentration, hardness, contact angle and wear resistance of samples after ion implantation was determined by atomic force microscopy (AFM), grazing incidence X-ray diffraction (GIXRD), elemental dispersive spectroscopy (EDS), X-ray diffraction, nanoindentation tester, universal friction and wear tester, etc. The results showed that the high-dose-rate method had a significant enhancement influence on ion implantation efficiency. At the dose rate of 2.60 × 1017 ions/cm2·h, the roughness of Ra decreases from 24.8 nm to 10.4 nm, which is decreased by 58.1% for the dose rate of 7.85 × 1017 ions/cm2·h. XRD confirmed that the implanted samples consisted of the Fe(M) and Fe2–3N phase and CrN which depends on the implantation dose rate. Meanwhile, the surface hardness was improved from 11.1 GPa to 16.9 GPa and enlarged the hardened region; more valuably, the surface state of samples via high-dose-rate implantation exhibits hydrophobicity with high roughness which is able to store debris and decrease the abrasive wear during testing; thereby, the wear resistance was greatly enhanced by high-dose-rate plasma immersion ion implantation.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Dose Rate on Tribological Properties of 8Cr4Mo4V Subjected to Plasma Immersion Ion Implantation

Miao,

Niu,

Guo

et al. 2024

Processes

Self Cite

View full text Add to dashboard Cite

show abstract

“…The as-received samples were mechanically polished with a series of SiC abrasive papers with grits of 180# to 2000# and polished with diamond grit paste to a mirror finish. The samples were cleaned ultrasonically with acetone for 30 min before loading onto a sample holder in the DLZ-01 PIII facility which was described elsewhere [59]. The body of the chamber is connected with the grounded potential, and it acts as an anode.…”

Section: Methodsmentioning

confidence: 99%

Understanding the Microstructure Evolution of 8Cr4Mo4V Steel under High-Dose-Rate Ion Implantation

Miao,

Zhang,

Guo

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

In this study, the effect of microstructure under various dose rates of plasma immersion ion implantation on 8Cr4Mo4V steel has been investigated for crystallite size, lattice strain and dislocation density. The phase composition and structure parameters including crystallite size, dislocation density and lattice strain have been investigated by X-ray diffraction (XRD) measurements and determined from Scherrer’s equation and three different Williamson–Hall (W-H) methods. The obtained results reveal that a refined crystallite size, enlarged microstrain and increased dislocation density can be obtained for the 8Cr4Mo4V steel treated by different dose rates of ion implantation. Compared to the crystallite size (15.95 nm), microstrain (5.69 × 10−3) and dislocation density (8.48 × 1015) of the dose rate of 2.60 × 1017 ions/cm2·h, the finest grain size, the largest microstrain and the highest dislocation density of implanted samples can be achieved when the dose rate rises to 5.18 × 1017 ions/cm2·h, the effect of refining is 26.13%, and the increment of microstrain and dislocation density are 26.3% and 45.6%, respectively. Moreover, the Williamson–Hall plots are fitted linearly by taking βcosθ along the y-axis and 4sinθ or 4sinθ/Yhkl or 4sinθ(2/Yhkl)1/2 along the x-axis. In all of the W-H graphs, it can be observed that some of the implanted samples present a negative and a positive slope; a negative and a positive slope in the plot indicate the presence of compressive and tensile strain in the material.

show abstract

“…Some of the most commonly used methods are DC plasma nitriding at low temperature [3][4][5][6][7] and ion implantation [8,9]. Recently, High-Temperature Gas Nitriding (HTGN) or solution nitriding has been introduced as a method for adding nitrogen to stainless steel [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…The electrochemical behaviour indicates a clear improvement of the corrosion resistance in alkaline and chloride-containing media for the implanted specimens. Ma et al [9] used the elevated temperature PIII process which combines conventional ion implantation and diffusion and results in a change of the element distribution and microstructure in the implanted layer. By these processes, a layer thickness of about 2 µm can be obtained, which is about one order of magnitude thicker than the layer thickness implanted at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Solution heat treatment of plasma nitrided 15-5PH stainless steel - Part I: Improvement of the corrosion resistance

Borges¹,

Rocha²

2011

View full text Add to dashboard Cite

The results of the investigation on Solution Heat Treatment of Plasma Nitrided (SHTPN) precipitation-hardened steel 15-5 PH are presented. The layers have been obtained by the plasma nitriding process followed by solution heat treatment at different temperatures. The influence of the solution heat treatment after nitriding on the dissolution process of the nitrided layer has been considered. The nitrided layers were studied by scanning electron microscopy, X-ray microanalysis (EDX), and X-ray diffraction. Micro-hardness tests of the nitrided layers and solubilized nitrided layers have been carried out and interpreted by considering the processing conditions. It was found that high nitrogen austenitic cases could be obtained after SHTPN of martensitic precipitation-hardened steel (15-5PH). When Solution Heat Treatment (SHT) was performed at 1100• C, some precipitates were observed. The amount of precipitates significantly reduced when the temperature increased. The EDX microanalysis indicated that the precipitate might be chromium niobium nitride. When the precipitation on the austenite phase occurred in small amount, the corrosion resistance increased in SHTPN specimens and the pit nucleation potential also increased. The best corrosion result occurred for SHT at 1200

show abstract

Elevated temperature nitrogen plasma immersion ion implantation of AISI 302 austenitic stainless steel

Cited by 14 publications

References 13 publications

Effect of Dose Rate on Tribological Properties of 8Cr4Mo4V Subjected to Plasma Immersion Ion Implantation

Effect of Dose Rate on Tribological Properties of 8Cr4Mo4V Subjected to Plasma Immersion Ion Implantation

Understanding the Microstructure Evolution of 8Cr4Mo4V Steel under High-Dose-Rate Ion Implantation

Solution heat treatment of plasma nitrided 15-5PH stainless steel - Part I: Improvement of the corrosion resistance

Contact Info

Product

Resources

About