Experimental investigation and mathematical modelling of water vapour corrosion of Ti3SiC2 and Ti2AlC ceramics and their mechanical behaviour

Commercially available Ti3SiC2 and Ti2AlC ceramics were used in this study to investigate their wet corrosion mechanical behaviour as they under investigation for years applications the field of nuclear cladding materials aerospace. The test coupons dimension 3 × 4 40 mm3 20 machined out from commercially samples 3-pt bend test, respectively. water vapour studies these carried at 800 ?, 1000 1200 ? 10, 100 h gas flow condition containing 50 % steam + air. Phase analysis as-received revealed presence other impurity phases such TiC TiSi2. XRD patterns oxidised show formation rutile major phase both materials. oxidation layer formed on sample was measured be 280 ?m after exposing °C. reveal that has high resistance compared with due protective layers TiO2 Al2O3 which resulted reduced weight gain thickness. Three-point tests conducted room temperature °C/100 h. TAC showed no degradation bending strength (244 MPa) whereas TSC 320 MPa. tensile hydrothermal (250 °C 250 bars pressure) it observed had (190 conditions. results validated using Finite element (FEA) ANSYS FEA a negligible variance 7 experimental method. Mathematical modelling based one dimensional solution diffusion equation combined Deal-Grove model employed compare thickness linear parabolic models ceramics. effective validating showing closer mathematical model.