Thin Film Hot Corrosion Studies of Oxidised and Carburised 304 Stainless Steel

2001 ◽  
Vol 369-372 ◽  
pp. 109-116
Author(s):  
Trevor R. Griffiths ◽  
Nicolas J. Phillips
Keyword(s):  
Thin Film ◽  
Stainless Steel ◽  
Hot Corrosion ◽  
304 Stainless Steel ◽  
Corrosion Studies

Hot Corrosion Studies of GTA Welded Monel 400 Exposed to Thin Film of Molten Na2so4 - 60% V2O5 at 600°C

2012 ◽  
Vol 584 ◽  
pp. 126-130
Author(s):  
Puneet Kumar Mishra ◽  
K.S. Gopalakrishnan ◽  
K. Devendranath Ramkumar ◽  
N. Arivazhagan ◽  
S. Narayanan
Keyword(s):  
Thin Film ◽  
Hot Corrosion ◽  
Research Work ◽  
Tensile Tests ◽  
Weld Interface ◽  
Corrosion Properties ◽  
Gas Tungsten Arc ◽  
Corrosion Studies ◽  
Microstructure Examination ◽  
Monel 400

In this research work, an attempt has been made to investigate the gas tungsten arc welded Monel 400 plates using ENiCu-7 for its mechanical and corrosion properties. Microstructure examination reveals the coarse grain formation of Ni-Cu phase in the heat affected zone (HAZ) and well defined dendrites are observed in the weld region. Tensile tests showed that fracture occurred at the weld interface and the ultimate tensile strength of the Monel weldment is found to be 515 MPa. Furthermore hot corrosion studies were performed on the different zones (Weld, HAZ and Base metal) of Monel 400 exposed to the thin film of molten salt environment of Na2SO4 - 60% V2O5 at 600°C. It was found that corrosion was extremely severe on the fusion zone after exposed to 50 cycles. The corrosion products were characterized using the combined techniques of optical microscopy, XRD, SEM/EDX analysis

Corrosion studies of stainless steel protected by a TiO2 thin film deposited on a sulfonate-functionalized self-assembled monolayer

2010 ◽  
Vol 52 (1) ◽  
pp. 125-129 ◽  
Author(s):  
Sérgio Meth ◽  
Natali Savchenko ◽  
Maxim Koltypin ◽  
David Starosvetsky ◽  
Federico A. Viva ◽  
...  
Keyword(s):  
Thin Film ◽  
Stainless Steel ◽  
Tio2 Thin Film ◽  
Self Assembled Monolayer ◽  
Corrosion Studies ◽  
Self Assembled

Hot Corrosion Studies of HVOF-Sprayed Cr3C2-NiCr Coating on 310S Stainless Steel in an Actual Environment of a Coal Fired Boiler

2012 ◽  
Vol 585 ◽  
pp. 483-487 ◽  
Author(s):  
V.N. Shukla ◽  
R. Jayaganthan ◽  
V.K. Tewari
Keyword(s):  
Stainless Steel ◽  
Hot Corrosion ◽  
Corrosion Behaviour ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
Corrosion Studies ◽  
Super Heater ◽  
Actual Environment ◽  
Cyclic Studies ◽  
The Given

The present investigation is an attempt to evaluate the hot corrosion behaviour of high velocity-oxy fuel (HVOF) sprayed Cr3C2-25 % NiCr coating on 310S stainless steel in an actual industrial environment of a coal fired boiler. The cyclic studies were performed in the super heater zone of a coal-fired boiler where the temperature was around 700±100C. Experiments were carried out for 3 cycles each of 500 hours duration followed by 1 hour cooling in air till room temperature. X-ray diffraction (XRD) analysis and field emission scanning electron microscope (FESEM, FEI, Quanta 200F Company) with EDAX Genesis software attachment were used to analyse the oxidation-erosion products. The Cr3C2-25wt% NiCr coated specimen showed good adherence to the 310S SS substrate with negligible microspalling of the scales. The Cr3C2-25wt % NiCr coating deposited on 310S stainless steel imparted better hot corrosion resistance than the uncoated one in the given environment.

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