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.