Synthesis and oxidation of Ti2InC, Zr2InC, (Ti0.5,Zr0.5)2InC and (Ti0.5,Hf0.5)2InC in air

Synthesis and compressive behavior of Cr2GeC up to 48GPa

“…However no extra peaks other than Cr 2 GeC and Pt appeared with the increasing pressure up to 48 GPa, suggesting that there was no phase transformation in the experimental pressure range. The structural stability under compression is comparable with other MAX phases reported so far [14][15][16][17][18][19][20][21][22][23][24][25]. Fig.…”

“…A literature search on the MAX compounds indicates that apart from reporting synthesis and characterization, oxidation behavior, chemical properties such as corrosion behavior, thermal properties, of these MAX compounds [14][15][16][17], considerable work has been done on the behavior of these phases at high pressures. Compressibility studies of Ta 4 AlC 3 , Ti 4 AlN 3 among 413 MAX compounds [18,19], Ti 3 SiC 2 , Ti 3 GeC 2 , Ti 3 Si 0.5 Ge 0.5 C 2 , Ti 3 AlSn 0.2 C 2 , Ti 3 Al(C 0.5 N 0.5 ) 2 among 312 MAX compounds [14,[20][21][22] and Ti 2 AlC, Ti 2 AlN, Cr 2 AlC, Nb 2 AlC, Ta 2 AlC, V 2 AlC, Ti 0.5 V 0.5 AlC, Ti 0.5 Nb 0.5 AlC, Ti 2 SC, Zr 2 InC among 211 MAX compounds [23][24][25] have been reported around 50 GPa.…”

New Solid Solution MAX Phases: (Ti0.5, V0.5)3AlC2, (Nb0.5, V0.5)2AlC, (Nb0.5, V0.5)4AlC3and (Nb0.8, Zr0.2)2AlC

“…List of the 68 solid solutions known to date. 2 AlC (x = 0.25, 0.3, 0.4, 0.5, 0.6, 0.75, 0.8, 0.85) [9][10][11] (Ti x ,V 1−x ) 3 AlC 2 (x = 0.5 a ) (Ti x ,Cr 1−x ) 2 AlC (x = 0.25, 0.75) [10] ( T i x ,Cr 1−x ) 3 AlC 2 (x = 0.33) [25] (Ti x ,Nb 1−x ) 2 AlC (x = 0.5) [12] (Cr x ,V 1−x ) 3 AlC 2 (x = 0.5) [26] (Ti x ,Ta 1−x ) 2 AlC (x = 0.4) [12] A element (Ti x ,Hf 1−x ) 2 InC (x = 0.5) [13] T i 3 (Al x ,Si 1−x )C 2 (x = 0.1, 0.2, 0.4, 0.5, (Ti x ,Hf 1−x ) 2 InC 1.26 (x = 0.47) [14] 0.75, 0.8, 0.85, 0.9, 0.95) [27][28][29][30] (Ti x ,Zr 1−x ) 2 InC (x = 0.5) [13] T i 3 (Al x ,Sn 1−x )C 2 (x = 0.8) [18] (Cr x ,V 1−x ) 2 AlC (x = 0.25, 0.3, 0.5, 0.7, 0.75, 0.9) [10,11,15] T 2 GeC (x = 0.5) [16] T i 3 (Si x ,Ge 1−x )C 2 (x = 0.43, 0.5, 0.75) [32,33] (V x ,Ta 1−x ) 2 AlC (x = 0.65) [12] T a 3 [12] X element (Nb x ,Zr 1−x ) 2 AlC (x = 0.6, 0.8 a ) [12] T…”

Phase Formation of Nanolaminated Transition Metal Carbide Thin Films

“…Therefore, the oxidation behavior of the MAX phases is significantly depending on whether or not the scale is capable of retarding O penetration and M/A-element out-diffusion at a given temperature. Most combinations of the M and A elements are oxidation protective only up to a temperature range of 400 -500 °C, such as M2O5-Al2O3 in M2AlC (M = Nb, Ta) [198,199], Ti2O3-In2O3 in Ti2InC [200], Nb2O5-SnO/SnO2 in Nb2SnC [201], and rutile TiO2 in Ti2SC [202]. Further increase the temperature or the time interval result in linear oxidizing kinetics and the oxidation in the bulk materials due to, e.g., formation of nonprotective oxide species [198][199][200], microcracks/pores [198][199][200][201][202], and volatile oxide species [202], or spallation of the scale [202].…”

“…Most combinations of the M and A elements are oxidation protective only up to a temperature range of 400 -500 °C, such as M2O5-Al2O3 in M2AlC (M = Nb, Ta) [198,199], Ti2O3-In2O3 in Ti2InC [200], Nb2O5-SnO/SnO2 in Nb2SnC [201], and rutile TiO2 in Ti2SC [202]. Further increase the temperature or the time interval result in linear oxidizing kinetics and the oxidation in the bulk materials due to, e.g., formation of nonprotective oxide species [198][199][200], microcracks/pores [198][199][200][201][202], and volatile oxide species [202], or spallation of the scale [202]. Contrarily, Ti2AlC and Ti3AlC2 exhibits less oxidation resistance at temperature lower than ~700 °C [18,[203][204][205] but an improved oxidation resistance at temperature higher than 1000 °C, which can be described with cubic oxidation kinetics [206].…”