Chemical vapor infiltration (CVI) is a variant on Chemical Vapor Deposition (CVD). CVD implies deposition onto a surface, whereas CVI implies deposition within a body. Chemical vapor infiltration is widely used as a means of fabricating Ceramic Matrix Composites (CMCs) such as alumina/alumina (alumina fiber reinforced alumina), in which a chemical vapor consisting of AlCl3-H2-CO2 is deposited onto porous alumina fibers or preforms, or SiC/SiC (silicon carbide fiber reinforced silicon carbide). The CVI-process was designed and first experimented by Professor Roger Naslain from the University of Bordeaux 1 on carbon fiber reinforced SiC composites for aerospace applications.
Famous quotes containing the word chemical:
“We are close to dead. There are faces and bodies like gorged maggots on the dance floor, on the highway, in the city, in the stadium; they are a host of chemical machines who swallow the product of chemical factories, aspirin, preservatives, stimulant, relaxant, and breathe out their chemical wastes into a polluted air. The sense of a long last night over civilization is back again.”
—Norman Mailer (b. 1923)