Gas-turbine components

High-temperature gas-turbine components. Diesel-engine components. 

Most metals and many refractory compounds can be thermal-sprayed. Applications include coating of gas-turbine components for aircraft and industrial use, components of steam turbines and diesel engines, components for the oil and gas industry, paper and pulp industry, and chemical processing industry. 

Cobalt-based alloys, in both wrought and cast forms, have also been developed for high-temperature applications such as gas turbine components, furnaces, and kilns. Alloy 25 (55Co-20Cr-10Ni-15W) (UNS R30605) is an example. Manufacturers are usually consulted in selecting these alloys. 

G. Whal, W. Nemetz, M. Giannozzi, S. Rushworth, D. Baxter, N. Archer, F. Cemuschi and N. Boyle, Chemical Vapor Deposition of TBC An Alternative Process for Gas Turbine Components, Trans. ASmm, 520-524 (2001). 

Eliaz N, Shemesh G and Latanision RM, Hot Corrosion in Gas Turbine Components. Eng Fail Anal, 2002, 9 31 3. 

Modern gas turbines have the most advanced and sophisticated technology in all aspects construction materials are not the exception due to their extrane operating conditions. The most difficult and challenging point is the one located at the turbine inlet, because several difficulties are associated with it, like extreme temperature, high pressure, high rotational speed, vibration, small circulation area, and so on. These rush characteristics produce effects on the gas turbine components, which are shown in Table 5.1 [8]. 

In order to overcome those barriers, gas turbine components are made using advanced materials and modern alloys (superaUoys) that contain up to 10 significant alloying elements. 

Eliaz N., Shemesh G., Latanision R. M. 2002. Hot corrosion in gas turbine components. Engineering... 

For the past 15 years, research and development of CMCs has been sustained because of their potential for military and commercial applications. The applications of interest include (1) aircraft engine components, such as combustors, turbines, compressors and exhaust nozzles (2) ground-based and automotive gas turbine components, such as combustors, first and second stage turbine vanes and blades, and shrouds (3) aerospace engines for missiles and reusable space vehicles and (4) industrial applications, such as heat exchangers, hot gas filters, and radiant burners. 

Impact. Durable coatings for non-oxide fibers would provide suitable lifetimes for many applications, such as thermally loaded gas turbine components and heat exchangers. 

G.S. Corman, K.L. Luthra, and M.K. Bmn, Silicon Melt Infiltrated Ceramic Conqjosites — Processes and Properties Ch ter 16 in Progress In Ceramic Gas Turbine Development, Vol. II, Ceramic Gas Turbine Component Development and Evolution, Fabrication, NDE, Testing (md life Prediction, M. van Roode, M. Ferber, D. Richerson, eds., ASME Press, New York, USA, 2003. 

The plateout fraction in the gas-turbine is the same as that in the inner pipe of the HTTR where temperature is about 850 °C, namely 0.03 % for l and 0.01 % for (from Fig. 5). For it is assumed that all silver plateout on the gas-turbine components. Radiation dose... 

Hempel, H. and Wiest, H. (1986) Structural analysis and life prediction for ceramic gas turbine components for the Mercedes-Benz Research Car 2000. ASME Paper No. 86-GT-199. 

High-temperature gas-turbine components Diesel-engine components Rotors for turbocharger Cutting tools (Si3N4 and Sialons)... 

Figure 7.42 Factors influencing gas turbine component life (Spera and Crisaffe, 1973).

Silicon nitride, SijN4, 4, 170, 222 a-fi transformation, 222 bonding in, 221-222 critical flaw size, 153 critical load, 153 CVD, 228 erosion test, 191 etchant for, 225 gas turbine components, 219 hardness... 

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