Papers by Keyword: Burner Rig Test

Abstract: The paper presents a proposed application of the Gunt ET794 turbine model and subsequent tests carried out in order to determine its usability in sample testing under erosive and corrosive conditions. The most important parameter measured during the tests was temperature before the T3 turbine as well as fuel consumption (propane-butane). Following measurement taking and determining conditions, an optimum place for sample attaching was established. CATIA and Autocad software was used to elaborate the sample attachment model. It has been assumed that the tested sample had 14mm in diameter and thickness of 4mm, while the protective coat will be 500μm max. The summary presents additional research and works, whose aim would be to improve the application of the Gunt ET794 as the test stand.

Abstract: Ytterbium silicate layers were deposited on Si3N4 ceramics as environmental barrier coatings (EBCs) by a dip coating-sintering method. Coated samples were tested in an atmosphere simulating the practical conditions of a gas turbine to investigate water vapor corrosion and recession mechanisms of ytterbium silicate coatings. Prior and after tests, phase compositions and morphologies of the coatings varied as the consequence of the formation of silica at the coating/substrate interface. Due to the evaporation and diffusion of silica into the upper layer, a porous interface was finally found, which led to the spallation of coating.

Abstract: Oxidation testing of four gamma-prime (γ') strengthened alloys used extensively in aero and/or land-based gas turbine engines was performed. The studied alloys, which included R-41 alloy, Waspaloy alloy, 263 alloy and the new HAYNES® 282® alloy were selected because they belong to a family of alloys distinguished by their possession of sufficient fabricability to be produced in sheet or plate form. The test program included both static and dynamic oxidation testing. The static oxidation tests were performed in flowing air at temperatures of 871, 927 and 982°C (1600, 1700, and 1800°F). The dynamic (burner rig) oxidation tests were performed at 871°C (1600°F). The results of these test programs will be presented.