Deposition model of the Si3N4 coating on hard alloys

Formation of Si3N4 coating on SiC substrate by gas transporting self‐propagating high‐temperature synthesis with the addition of NH4Cl

“…As shown in Figure 3F, Si element distributes throughout the interface and has a tendency of enrichment at the interface, which may be the reason that Si 3 N 4 A survey of the published literature shows that process modeling of CMCs has been studied by a number of researchers. Processes that have been modeled include RMI, 15,16 CVD, 17,18 CVI, [19][20][21][22] and Sol-Gel Infiltration. 23 Impregnation of alumina matrix in eight-harness satin Nextel 610 fabric has been studied numerically in Ref.…”

“…With the further spread of self‐propagating combustion wave, the temperature of SiC substrate increases gradually. Once reaching a certain temperature, the SiCl 4 deposited will react with the high‐pressure nitrogen to form a Si 3 N 4 crystal nucleus 22 . Furtherly, with the higher reaction temperature getting on the substrate surface, more SiCl 4 can be nitride and promote its development to form a compact Si 3 N coating.…”

“…In zone 2, closer to the reactant, Si A survey of the published literature modeling of CMCs has been studied by a n ers. Processes that have been modeled CVD, 17,18 CVI, [19][20][21][22] and Sol-Gel Infiltrat of alumina matrix in eight-harness satin has been studied numerically in Ref. [ proaches used in the above work general ing the flow of a high viscosity resin thr and modeling the chemical reactions and during processing.…”

“…Once reaching a certain temperature, the SiCl 4 deposited will react with the high-pressure nitrogen to form a Si 3 N 4 crystal nucleus. 22 Furtherly, with the higher reaction temperature getting on A survey of the published literature shows that process modeling of CMCs has been studied by a number of researchers. Processes that have been modeled include RMI, 15,16 CVD, 17,18 CVI, [19][20][21][22] and Sol-Gel Infiltration.…”