TAOI [A] HVOF Thermal Spray TIC/TIB2 Coatings of Ausc Boiler/Turbine Components for Enhanced Corrosion Protection Email Page
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Performer:  Southern Illinois University Location:  Carbondale, Illinois
Project Duration:  09/01/2012 – 08/31/2016 Award Number:  FE0008864
Technology Area:  University Training and Research Total Award Value:  $448,190
Key Technology:  High Performance Materials DOE Share:  $299,992
Performer Share:  $148,198

SEM image of surfaces after exposure to simulated ash<br/>environment after 800 hours (left – uncoated, right -coated).
SEM image of surfaces after exposure to simulated ash
environment after 800 hours (left – uncoated, right -coated).

Project Description

This research project addresses some of the materials issues for the successful implementation of the supercritical and ultra supercritical Rankine cycles. The goal of the effort is to develop new coatings to improve corrosion resistance of boiler materials, fireside corrosion protection of tubes and turbine blade materials. The new coating will be prepared by High Velocity Oxygen Fuel Spraying (HVOF) spray coating of TiC and TiB2 nanoparticles synthesized by a patented process. The specific objectives of the proposed project are a) synthesis of nanoparticles of TiC by a patented process, b) extension of the process to synthesize nanosized TiB2 powder, c) optimization of ( HVOF spray coating of the TiC and TiB2 on select ferritic, austentic and nickel alloy samples generally used for waterwall tubing, high temperature boiler sections, turbine blades and ultra supercritical (USC) tubing applications, d) laboratory evaluation of the corrosion resistance of the coatings employing simulated flue gas and simulated ash, e) selection of optimum alloy protection system in different temperature/chemical regimes and f) field evaluation of fabricated probes of select coating in actual boiler/turbine environment.

Project Benefits

This project will develop high-velocity oxy-fuel thermal spray coatings for use on advanced ultra supercritical boiler and turbine components for enhanced corrosion protection. These advancements will enable new technology innovation and finer quantitative control of coating performance to meet stringent requirements for use in advanced ultrasupercritical boiler, steam turbine, and gas turbine operational environments.

Presentations, Papers, and Publications

Contact Information

Federal Project Manager Richard Dunst: richard.dunst@netl.doe.gov
Technology Manager Robert Romanosky: robert.romanosky@netl.doe.gov
Principal Investigator Kanchan Mondal: kmondal@siu.edu