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Title of Journal: J Therm Spray Tech

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Abbravation: Journal of Thermal Spray Technology

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Springer US

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DOI

10.1002/mc.22109

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1544-1016

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HighTemperature Exposure Studies of HVOFSprayed

Authors: Harpreet Singh Manpreet Kaur Satya Prakash
Publish Date: 2016/06/06
Volume: 25, Issue: 6, Pages: 1192-1207
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Abstract

In this research development of Cr3C225NiCr + 25WCCo composite coating was done and investigated Cr3C225NiCr + 25WCCo composite powder designated as HP2 powder was prepared by mechanical mixing of 75Cr3C225NiCr and 88WC12Co powders in the ratio of 7525 by weight The blended powders were used as feedstock to deposit composite coating on ASTM SA213T22 substrate using High Velocity OxyFuel HVOF spray process Hightemperature oxidation/corrosion behavior of the bare and coated boiler steels was investigated at 700 °C for 50 cycles in air as well as in Na2SO482Fe2SO43 molten salt environment in the laboratory Erosioncorrosion behavior was investigated in the actual boiler environment at 700 ± 10 °C under cyclic conditions for 1500 h The weightchange technique was used to establish the kinetics of oxidation/corrosion/erosioncorrosion Xray diffraction field emissionscanning electron microscopy/energydispersive spectroscopy FESEM/EDS and EDS elemental mapping techniques were used to analyze the exposed samples The uncoated boiler steel suffered from a catastrophic degradation in the form of intense spalling of the scale in all the environments The oxidation/corrosion/erosioncorrosion resistance of the HVOFsprayed HP2 coating was found to be better in comparison with standalone Cr3C225NiCr coating A simultaneous formation of protective phases might have contributed the best properties to the coatingThis article is an invited paper selected from presentations at the 6th Asian Thermal Spray Conference ATSC 2014 and has been expanded from the original presentation ATSC 2014 was held in Hyderabad India November 2426 2014 and was organized by the International Advanced Research Centre for Powder Metallurgy and New Materials ARCI and the Asian Thermal Spray SocietyHarpreet Singh et al thankfully acknowledge the research grant from Department of Science and Technology New Delhi India under SERC FAST Scheme File No SR/FTP/ETA06/06 Dated March 16 2006 to carry out this R D work titled “Development of ErosionCorrosion Resistant Thermal Spray Coatings for Power Plant Boilers”


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Other Papers In This Journal:

  1. Characterization of Microplasma Sprayed Hydroxyapatite Coating
  2. Compositionally Graded Thermal Barrier Coating by Hybrid Thermal Spraying Route and its Non-isothermal Oxidation Behavior
  3. Identification of Desirable Precursor Properties for Solution Precursor Plasma Spray
  4. Thanks to Our Guest Editors and Reviewers for Their Critical Contributions in 2014
  5. In Situ Monitoring of Particle Consolidation During Low Pressure Cold Spray by Ultrasonic Techniques
  6. Review of Thermal Spray Coating Applications in the Steel Industry: Part 1—Hardware in Steel Making to the Continuous Annealing Process
  7. Sealing HVOF Thermally Sprayed WC-CoCr Coatings by Sol-Gel Methods
  8. Atmospheric Plasma Spraying of High Melting Temperature Complex Perovskites for TBC Application
  9. Double Rare-Earth Oxides Co-doped Strontium Zirconate as a New Thermal Barrier Coating Material
  10. Microstructure and Properties of Porous Abradable Alumina Coatings Flame-Sprayed with Semi-molten Particles
  11. Influence of the Spray Angle on the Properties of HVOF Sprayed WC–Co Coatings Using (−10 + 2 μm) Fine Powders
  12. Nonequilibrium Atmospheric Plasma Deposition
  13. Study of the Antibacterial Behavior of Wire Arc Sprayed Copper Coatings
  14. Rapid and Continuous Deposition of Porous Nanocrystalline SnO 2 Coating with Interpenetrating Pores for Gas Sensor Applications
  15. Effect of Spray Particle Velocity on Cavitation Erosion Resistance Characteristics of HVOF and HVAF Processed 86WC-10Co4Cr Hydro Turbine Coatings
  16. Phase Composition and Microstructural Responses of Graded Mullite/YSZ Coatings Under Water Vapor Environments
  17. JTST Editorial Team Expands; Vardelle Named Lead Editor
  18. A One-Dimensional Flow Model with Adiabatic Friction for Rapid Estimation of Cold Spray Flow Conditions
  19. Fast Modeling of Phase Changes in a Particle Injected Within a d.c Plasma Jet
  20. High-Pressure Cold-Sprayed Ni and Ni-Cu Coatings: Improved Structures and Corrosion Properties
  21. Selected Patents Related to Thermal Spraying
  22. Electrical Properties of Thermally Sprayed Ni- and Ni20Cr-Based Resistors
  23. Selected Patents Related to Thermal Spraying
  24. Evaluation of Die-Soldering and Erosion Resistance of High Velocity Oxy-Fuel Sprayed MoB-Based Cermet Coatings
  25. Simulation of Effervescent Atomization and Nanoparticle Characteristics in Radio Frequency Suspension Plasma Spray
  26. Relationships Between Process Parameters, Microstructure, and Adhesion Strength of HVOF Sprayed IN718 Coatings
  27. HVOF Spraying of Fe-Based MMC Coatings with In Situ Formation of Hard Particles by Hot Isostatic Pressing
  28. Parameters Influencing the Photocatalytic Activity of Suspension-Sprayed TiO 2 Coatings
  29. Development and Characterization of B 4 C Reinforced Detonation-Sprayed Al Coatings
  30. Abrasive Wear Study of Rare Earth Modified Coatings by Statistical Method
  31. Acoustic Measurements in a Hexamethyldisiloxane-Loaded Low-Temperature Direct Barrier Discharge (DBD) Plasma Effluent: Nozzle Cleaning
  32. The Role of Substrate Surface Chemistry on Splat Formation During Plasma Spray Deposition by Experiments and Simulations
  33. Effect of Sealing Treatment on Corrosion Resistance of Plasma-Sprayed NiCrAl/Cr 2 O 3 -8 wt.%TiO 2 Coating
  34. Journal of Thermal Spray Technology Volume 20 Best Paper Awards
  35. Internal Diameter HVAF Spraying for Wear and Corrosion Applications
  36. Journal of Thermal Spray Technology Volume 20 Best Paper Awards
  37. Preparation of Lanthanum Zirconate Coatings by the Solution Precursor Plasma Spray
  38. Chemical Vapor Deposition and Atomic Layer Deposition of Coatings for Mechanical Applications

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