Plasma nitriding using high H2 content gas mixtures for a cavitation erosion resistant steel

Allenstein, A.N.; Lepienski, C.M.; Buschinelli, A.J.A.; Brunatto, Sílvio Francisco

doi:10.1016/j.apsusc.2013.03.055

Cited by 46 publications

(14 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among different surface modification processes, low-temperature plasma-assisted thermochemical treatments of martensitic stainless steels can be successfully employed to achieve this purpose. In this case, good results have been reported by applying plasma nitriding [2,[7][8][9][10][11][12][13][14][15][16][17][18][19][20][21], carburizing [22][23][24], and also nitrocarburizing [6]. Likewise, very promising results were presented in refs.…”

Section: Introductionsupporting

confidence: 70%

“…The successful use of the metallographic technique as a support to show important changes on the structure of thermochemically treated layers (in relation to the original matrix of the stainless steel) has been shown in ref. [18]. In that work, Nital-2% was used to evidence changes in the original steel microstructure due to nitrogen diffusion from surface into the sample bulk since it does not etch alloys as stainless steels in its original composition condition, and so in the unaltered matrix of the steel.…”

Section: Microstructural Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Low-temperature plasma nitrocarburizing of the AISI 420 martensitic stainless steel: Microstructure and process kinetics

Anjos

Scheuer

Brunatto

et al. 2015

Surface and Coatings Technology

Self Cite

View full text Add to dashboard Cite

Section: Introductionsupporting

confidence: 70%

Section: Microstructural Characterizationmentioning

confidence: 99%

Low-temperature plasma nitrocarburizing of the AISI 420 martensitic stainless steel: Microstructure and process kinetics

Anjos

Scheuer

Brunatto

et al. 2015

Surface and Coatings Technology

Self Cite

View full text Add to dashboard Cite

“…Martensitic stainless steel attracts many investigations due to its higher resistance to the CE than the austenitic and ferritic stainless steel [ 25 ]. Metal inert gas (MIG) welding martensitic stainless steel coating is a promising method to resist the CE and corrosion, like the AISI 431 [ 26 ], AISI 410 [ 27 ], and CA-6NM [ 28 ]. Further enhancement in the resistance to the CE was also carried out on the stainless steel by the nitriding process [ 29 , 30 ], laser surface melting [ 9 ], and welding [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Sand Particles on the Synergy of Cavitation Erosion-Corrosion of MIG Welding Stainless Steel Coating in Saline Water

et al. 2020

View full text Add to dashboard Cite

Cavitation erosion (CE) is a common problem troubling many flow-handling equipment such as valves, orifice plate pipes, and propellers. The coating technique is a widely used strategy to resist CE. It is important to understand the CE-corrosion behavior of the coatings in the corrosive solution, especially in the sand-containing saline water. A newly designed MIG welding precipitated hardened martensitic stainless steel (PHMSS) coating was performed, and its silt-CE was investigated in a suspension composed of 3.5 wt.% sodium chloride and 3% silica sand using an ultrasonic vibrator processor. The microstructure of the coating was characterized by optical microscopy and scanning electron microscopy. The effects of the sand particles on the CE-corrosion were analyzed using mass loss measurement, potentiodynamic polarization curve, and surface morphology observation. The results showed that the PHMSS coating was mainly composed of the lath martensitic phase alone. Its mass loss rate was in ascending order in the solution of distilled water alone, sand-containing distilled water, saline water alone, and sand-containing saline water. Sand particles played more roles in the CE in the distilled water than in the saline water. The synergy of CE and corrosion was much less in the sand-free saline than in the sand-containing saline. The maximum component was the erosion enhancement due to the corrosion in the saline without sand particles but was the pure erosion component in the saline with sand particles. The mechanism of the sand particles’ effect on the CE was also discussed.

show abstract

“…Hasan et al [22] reported that the plasmanitrided H13 die steel exhibited higher erosive wear resistance, but TiN, duplex TiN and TiAlCN showed higher roughness and lower erosive wear resistance. Allenstein et al [23] found that the plasma-nitrided layer obtained at 5% N 2 (?95% H 2 ) led to a better cavitation erosion resistance of the CA-6NM martensitic stainless steel. Panjan et al [24] showed that the erosive wear of duplex-treated die-casting tools was smaller than that of plasma nitrided.…”

Section: Introductionmentioning

confidence: 99%

The effect of duplex surface treatment on erosion performance of QRO 90 Supreme steel

2019

View full text Add to dashboard Cite

In this study, CrN and TiAlN thin films were deposited on plasma-nitrided QRO 90 Supreme hot work tool steel by physical vapor deposition process and analysed with regard to their erosion performance under hydro-abrasive erosion conditions. The as-received specimens were quenched to room temperature from 1050°C and tempered gradually at 605°C for 2 h and at 560°C for 4 h. These specimens were plasma-nitrided for 10 h at 500°C at a pressure of 250 Pa in a gas mixture of 80% N 2 ? 20% H 2 and then coated with TiAlN or CrN coatings by cathode arc evaporation. The specimens were characterized by metallographic techniques, SEM, EDS and micro-hardness test. Plasma nitriding and duplex surface treatments significantly increased the hardness of the specimens and thus significantly reduced the erosion of the specimens. The hardnesses on the surface of plasma-nitrided, CrN-deposited and TiAlN-deposited QRO 90 steels were 1092 HV 0.025 , 2436 HV 0.025 and 3578 HV 0.025 , respectively. TiAlN-coated specimens were about 17-fold harder than the as-received specimens and over 3-fold harder than the plasma-nitrided specimens. The erosion resistance of CrN-coated specimens was increased by a factor of 3.6 and 1.5 compared with that of the as-received and plasma-nitrided specimens, respectively. A brittle fracture phenomenon was observed on the eroded surface of the duplex-treated specimens while a ductile material removal was observed on the as-received and the tempered specimens. The plasma-nitrided specimens showed a mixed behaviour of ductility and brittleness. adhana(0123456789().,-volV)FT3 ](0123456789().,-volV)

show abstract

Plasma nitriding using high H2 content gas mixtures for a cavitation erosion resistant steel

Cited by 46 publications

References 21 publications

Low-temperature plasma nitrocarburizing of the AISI 420 martensitic stainless steel: Microstructure and process kinetics

Low-temperature plasma nitrocarburizing of the AISI 420 martensitic stainless steel: Microstructure and process kinetics

The Effects of Sand Particles on the Synergy of Cavitation Erosion-Corrosion of MIG Welding Stainless Steel Coating in Saline Water

The effect of duplex surface treatment on erosion performance of QRO 90 Supreme steel

Contact Info

Product

Resources

About