scholarly journals WEAR ASSESSMENT OF STELLITE COATING IN SEVERAL CORROSIVE SOLUTIONS

Author(s):  
I. Rodrigues ◽  
C. Figueiredo-Pina

Stellite™ 6 coatings deposited by HVOF on a Super Duplex Stainless-Steel substrate and wear performance was subsequently assessed. Thus, reciprocating ball-on-plate wear tests were performed in several conditions, for both coating and substrate. Results showed better wear resistance for the coating in all test conditions.

2019 ◽  
Vol 141 (10) ◽  
Author(s):  
Mengjiao Wang ◽  
Yunxia Wang ◽  
Jianzhang Wang ◽  
Na Fan ◽  
Fengyuan Yan

Super duplex stainless steel (SDSS) has excellent mechanical properties and corrosion resistance. However, currently, there are few researches conducted on its fretting wear performance. This paper studies the influence of different heat treatment temperatures and medium environment on the fretting wear performance of SAF 2507 SDSS. Results show that the combined effect of the sigma phase and seawater lubrication can significantly improve the wear resistance of SAF 2507 SDSS. After treated with different heat treatment temperatures, different contents of sigma phases are precipitated out of SAF 2507 SDSS, which improves the wear resistance of the material to different degrees. In addition, the fretting wear performance of SAF 2507 SDSS also relates to the lubrication medium. In air, the friction and wear performance of SAF 2507 SDSS is poor, while in seawater, solution and corrosion products that acted as a lubricant dramatically improve the wear resistance of the material. Under the combined action of heat treatment and seawater lubrication medium, the friction coefficient and wear reduce by 70% and 91%, respectively.


2015 ◽  
Vol 280 ◽  
pp. 1-7 ◽  
Author(s):  
Y. Sutou ◽  
S. Komiyama ◽  
M. Sonobe ◽  
D. Ando ◽  
J. Koike ◽  
...  

2010 ◽  
Vol 148-149 ◽  
pp. 740-743
Author(s):  
Wei Yan Liu ◽  
Xiu Yan Li ◽  
He Feng Wang ◽  
Rui Feng ◽  
Bin Tang

Titanium surface alloyed layer was fabricated on 316L stainless steel substrate at 1000°C by means of the plasma surface alloying technique. The content of element titanium in the surface alloyed layer shows gradually tapering from surface to the inside of the substrate and it means an excellent metallurgical binding between the surface modified layer and 316L stainless steel substrate. The hardness of the titanium surface alloyed Layer is 1305HK0.5, which is much larger than that of the 316L stainless steel substrate. The wear performance of the treated and untreated 316L stainless steel was studied using a ball-on-disc sliding wear machine. Although the titanium surface alloyed layer does not show a friction-reducing effect, it improves the wear resistance of 316L stainless steel significantly and its wear rate is only one-fifteenth of that for untreated 316L stainless steel.


2016 ◽  
Vol 19 (5) ◽  
pp. 1207-1212 ◽  
Author(s):  
Rômulo Ribeiro Magalhães de Sousa ◽  
Francisco Odolberto de Araújo ◽  
José Alzamir Pereira da Costa ◽  
Akio Nishimoto ◽  
Bartolomeu Cruz Viana ◽  
...  

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 622
Author(s):  
Xiaolong Xie ◽  
Bingbing Yin ◽  
Fucheng Yin ◽  
Xuemei Ouyang

The corrosion of galvanizing equipment parts by liquid zinc is an urgent problem that needs solving. In this work, FeB-30 wt.% Al0.25FeNiCoCr cermet coating was deposited on the surface of 316L stainless steel by AC-HVAF to protect galvanizing equipment parts from corrosion by liquid zinc. The microstructures and phase compositions of powders and the coating were determined by SEM, EDS, and XRD in detail. Additionally, the microhardness, fracture toughness, abrasion wear resistance, and corrosion resistance of the coating to liquid zinc were also studied. The results indicate that the abrasion wear resistance and corrosion resistance of the coating are much better than that of the 316L stainless steel substrate. The failure of the coating in liquid zinc is mainly due to the penetration of liquid zinc into macro-cracks, which causes the coating to peel off.


2021 ◽  
Vol 75 (3) ◽  
pp. 155-166
Author(s):  
Ramakrishnan Hariharan ◽  
Balasundaram Rathinam ◽  
Baskar Neelakandan ◽  
Radhakrishnan Beemaraj ◽  
Chellamuthu Kannan

This work presents the investigation of a boriding process on two grades of stainless steel namely UNS32750 super duplex stainless steel and UNSS31803 duplex stainless steel in order to improve material properties and possibly to reduce catastrophic failure of industrial components. Usage of duplex stainless steels has become customary in the fields of oil and refinery, marine and pipeline applications due to increased corrosion resistance; however, these materials exhibit low wear characteristics. To overcome this problem, in this work the pack boriding process was employed. Evaluation of effects of the boriding process on the microstructure and mechanical properties was performed using scanning electron and optical microscopy, Vickers hardness tests and wear tests. It was shown that the 4 h process resulted in the greatest boriding layer thickness yielding the maximum surface hardness of 1407 HV in the super duplex stainless steel UNS32750 while this value was 1201 HV in the duplex stainless steel UNSS31803. Wear resistance of borided materials were up to 6-fold greater than those of non - treated materials. Also, the borided duplex materials were shown to be more suitable for industrial applications for valve and shaft components as compared to the boronized super duplex stainless steel.


Alloy Digest ◽  
2018 ◽  
Vol 67 (7) ◽  

Abstract UGI 4410 is an austenitic super duplex stainless steel with good strength and corrosion resistance. It is designed for applications requiring very good corrosion resistance in aggressive environments in the presence of chlorides, as well as good mechanical properties. This datasheet provides information on composition, physical properties, microstructure, tensile properties. It also includes information on corrosion and wear resistance as well as forming, machining, and joining. Filing Code: SS-1291. Producer or source: Schmolz + Bickenbach USA Inc..


2018 ◽  
Vol 1145 ◽  
pp. 33-38
Author(s):  
Wei Hua Wang ◽  
Fa Qin Xie ◽  
Xiao Fei Yao ◽  
Xiang Qing Wu

In order to improve wear resistance surface on 0Cr18Ni9Ti stainless steel, Cu coating on the 0Cr18Ni9Ti stainless steel substrate was deposited by electroplating technology. The friction and wear properties of 0Cr18Ni9Ti stainless steel substrate and Cu coating were investigated contrastively. The morphologies of the wear scars were analyzed by scanning electron microscope (SEM), energy dispersive X-ray spectrometer (EDS) and scanning probe microscope (SPM), and the wear mechanism was discussed. The results showed that the wear resistance of Cu coatings was significantly improved as compared to that of 0Cr18Ni9Ti stainless steel substrate. The wear scar of 0Cr18Ni9Ti stainless steel substrate showed flaking pit, and its wear mechanism were delamination and abrasive wear. In case of Cu coating, the wear scars showed morphology of plastic deformation caused by adherent copper debris being pressed, and its wear mechanism were delamination and fatigue wear.


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