Turbine-engine components

High Temperature. The low coefficient of thermal expansion and high thermal conductivity of sihcon carbide bestow it with excellent thermal shock resistance. Combined with its outstanding corrosion resistance, it is used in heat-transfer components such as recuperator tubes, and furnace components such as thermocouple protection tubes, cmcibles, and burner components. Sihcon carbide is being used for prototype automotive gas turbine engine components such as transition ducts, combustor baffles, and pilot combustor support (145). It is also being used in the fabrication of rotors, vanes, vortex, and combustor. 

Aircraft panels, appendages, turbine-engine components, fuselage skin panels acoustic fatigue, noise control... 

J. Daloe and D. Boone, in Failure Mechanisms of Coating Systems Apphed to Advanced Turbine Engine Components, Proc. 42nd ASME Gas Turbine Aeroeng. Congr. (Orlando, 1997). 

Novich, B. E., Lee, R. R., Franks, G. V., and Ouellette, D., Quickset injection molding of high temperature gas turbine engine components, in Proc. 27th Automotive Technology Development Contractors Coordination Meeting, Dearborn, Ml, 1980, pp. 311-318. 

FIGURE 5.8 Commonly used materials in gas turbine engine components. 

The use of glass and glass-ceramic matrices for CMC fabrication aroused considerable interest and support in the 1970s and 1980s. Efforts to commercialize this technology were unsuccessful, however, because the market base was too small and there were no viable commercial suppliers. Nevertheless, numerous gas turbine engine component demonstrations... 

Hi-Nicalon Si-C <1,400 1,200 CMCs, projected application in turbine engine components and heat exchangers reinforcement in 1 kg to several hundred kg 6,900/kg for... 

Several Nicalon /Al203 turbine engine components were fabricated and engine or rig tested by various engine manufacturers. Some of these components fabricated are shown in Fig. 19. The only machining required for most of these components is along the edges and for the holes. A typical microstructure of a curved section of a component (Fig. 20) shows that the dense microstructure observed in flat panels (Fig. 2) is maintained in components. 

Turbine engine components, combuster liners, blades and vanes SiC, Si3N4, composites. 900-1400 Combustion gases, deposits Na, Mg, Ca sulfates, sodium vanadates Probst(1986)... 

The alloy should be considered for applications in which other current low-expansion superalloys are presently used, such as compressor and exhaust casings, seals, and other gas turbine engine components. 

Composites are usually classified by the type of material used for the matrix. The four primary categories of composites are polymer matrix composites (PMCs), metal matrix composites (MMCs), ceramic matrix composites (CMCs), and carbon matrix composites (CAMCs). The last category, CAMCs, includes carbon/carbon composites (CCCs), which consist of carbon matrices reinforced with carbon fibers. For decades, CCCs were the only significant type of CAMC. However, there are now other types of composites utilizing a carbon matrix. Notable among these is silicon carbide fiber-reinforced carbon, which is being used in military aircraft gas turbine engine components. 

Datta S, Das S. A new high temperature resistant glass-ceramic coating for gas turbine engine components. Bulletin of Materials Science 2005 28 689-696. 

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