Fabrication of ceramic composites: forced CVI

Abstract

The submmed manuscript has been authored by a cmtractor of the Us. Government under contract No. M-AC05-840R21400. Accorcbngi~, the U.S. Govermnent retams a ~x c ! u s N B. royalty-frm license to p u M or reproduce the published form of connauaOn. or allow o m s to do so, for US. Government purposes.

Fabrication of advanced SiC fiber/F-CVI SiC matrix composites with SiC/C multi-layer interphase

“…Among the various fabrication processes, CVI is attractive process for the fabrication of SiC/SiC composites because it yields highly crystalline, near-stoichiometoric SiC fiber damage during processing is minimized. The forced flow thermal-gradient CVI (F-CVI) process is a further improvement since the low rates of producing and high porosity, which are the peculiar problem of CVI, are overcome [9]. Previous work by authors has reported on F-CVI process optimization of SiC/SiC composite with carbon (C) interphase including the effect of interphase thickness on tensile strength [10,11].…”

Electrochemical performance of LiFePO4 modified by pressure-pulsed chemical vapor infiltration in lithium-ion batteries

“…In last decade, three main methods were developed: isothermal and isobaric CVI (ICVI) [18], forced CVI (FCVI) [19] and pressure-pulsed CVI (PCVI). In the case of the continuous gas-flowing chemical vapor deposition (CVD) or ICVI, thick films are easily formed on external surface of the porous substrates or the particle-packed beds.…”

Chemical Vapor Infiltration Rates of ZrO2 into MoSi2 Porous Bodies and Comparison with Model Calculation

“…The experimental conditions are shown in Table I. Long CVI processing times are common 31,32 during the industrial fabrication of composites. However, in our study, short CVI processing times were used to keep the process pressure constant during the experiments.…”