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INTERNATIONAL JOURNAL OF ENGINEERING DEVELOPMENT AND RESEARCH
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ISSN: 2321-9939 | ESTD Year: 2013

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Paper Title
Process Parameter Selection for Uniform Deposition of ChromeCarbide-NickleChrome (Cr3C2-20NiCr) Thermal Flame Spray Coatings on Stainless Steel (SS347H) Boiler tube
Authors
  ANTALA NIKUNJKUMAR MANOJBHAI,  DR. PANKAJ RATHOD

Abstract
Cr3C2−20NiCr coatings were deposited on 347H steel by Thermal Flame spraying. The thickness of the coated surface, cross section of coating and various phase present in coated surface were investigated using various parameter combinations as per Taguchi method in detail. In industries, various types of coatings are used in so many applications. Different methods are employed to protect the material from abrasion, corrosion, degradation, etc. Thermal spraying is one of the most effective methods to protect the material from high temperature corrosion, stresses and erosion, thus increasing the life of material in use. Flame spray coating is a thermal spraying technique known for providing hard, wear resistant and dense microstructures coatings. Scanning Electron Microscopy and X-Ray diffractometer used to analyze uniformity of coating surface and various phase present in coating. In flame spraying process parameters is more affected on the coating performance. By changing the process parameters coating performance is also change. Acetylene pressure, oxygen pressure and distance between coating nozzle and substrate is more affected on coating in flame spray coating. After investigation of coating in SEM, at acetylene pressure at 1.0 bar, oxygen pressure at 4.0 bar and spraying distance at 75 mm give more uniform structure than other combinations of various parameters. The XRD peaks reveal the presence of Cr3C2, Cr7C3 and Cr3Ni2 as main phases. Some medium peaks indicating the presence of CrNi are also revealed by the XRD analysis. The XRD peaks reveal the formation of Cr7C3, Cr3C2 as strong phases and CrNi, Cr2C and Cr as the medium intensity phases and Ni as a weak intensity phase in as-sprayed 347H steel.

Keywords- Thermal flame spraying; Cr3C2-NiCr; ANOVA; Uniformity of thickness.
Publication Details
Unique Identification Number - IJEDR1702110
Page Number(s) - 632-641
Pubished in - Volume 5 | Issue 2 | April 2017
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
  ANTALA NIKUNJKUMAR MANOJBHAI,  DR. PANKAJ RATHOD,   "Process Parameter Selection for Uniform Deposition of ChromeCarbide-NickleChrome (Cr3C2-20NiCr) Thermal Flame Spray Coatings on Stainless Steel (SS347H) Boiler tube", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.5, Issue 2, pp.632-641, April 2017, Available at :http://www.ijedr.org/papers/IJEDR1702110.pdf
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