Loading...
Please wait, while we are loading the content...
Similar Documents
Hot corrosion behaviour of continuous and pulsed current gas tungsten arc welded Hastelloy X in different molten salts environment
| Content Provider | Scilit |
|---|---|
| Author | Sathishkumar, M. Manikandan, M. |
| Copyright Year | 2019 |
| Description | Journal: Materials Research Express The present study reports the hot corrosion behaviour of Hastelloy X weldment joined through gas tungsten arc (GTA) and pulsed current gas tungsten arc (PCGTA) with ERNiCrMo-2 (Mo-2) and ERiCrCoMo-1 (CoMo-1) filler materials in molten salt I (75 % Na2SO4 + 25 % V2O5) (MS I) and molten salt II (75 % Na2SO4 + 20 % V2O5 + 5 % NaCl) (MS II) conditions at 900 °C for 250 hrs (50 cycles). The highest weight gain is found in MS II compared to MS I. The GTA CoMo-1 weldment of MS II showed the highest parabolic constant (Kp) of 5.455 x 10-6 mg2/(cm4.s) and PCGTA CoMo-1 weldment of MS I revealed the lowest Kp of 0.109 x 10-6 mg2/(cm4.s). The hot corrosion resistance of MS I and II weldments is arranged in the increasing order of, GTA Mo-2 < PCGTA Mo-2 < GTA CoMo-1 < PCGTA CoMo-1. The protective phases such as Cr2O3, NiCr2O4, NiFe2O4, NiO and Al2O3 are providing the better corrosion resistance by protecting the surface and sub-surface layer from further oxidation, whereas the non-protective phases like MoO3, Fe2O3 and Cr2S3 are the reason for acidic fluxing, spallation, cracking and exfoliation of oxide scale. The PCGTA CoMo-1 of both MS I and MS II are giving the best corrosion resistance at 900 °C. |
| Related Links | https://iopscience.iop.org/article/10.1088/2053-1591/ab562a/pdf |
| ISSN | 20531591 |
| e-ISSN | 20531591 |
| DOI | 10.1088/2053-1591/ab562a |
| Journal | Materials Research Express |
| Issue Number | 12 |
| Volume Number | 6 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2019-11-11 |
| Access Restriction | Open |
| Subject Keyword | Journal: Materials Research Express Metallurgy and Metallurgical Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Metals and Alloys Biomaterials Electronic, Optical and Magnetic Materials Polymers and Plastics |
