Molten Salt Synthesis of Nanolaminated Sc2SnC MAX Phase

Youbing LI; Yanqing QIN; Ke CHEN; Lu CHEN; Xiao ZHANG; Haoming DING; Mian LI; Yiming ZHANG; Shiyu DU; Zhifang CHAI; Qing HUANG

doi:10.15541/jim20200529

Journals >Journal of Inorganic Materials >Volume 36 >Issue 7 >Page 773 > Article

Journal of Inorganic Materials
Vol. 36, Issue 7, 773 (2021)

Molten Salt Synthesis of Nanolaminated Sc₂SnC MAX Phase

Youbing LI^1,2, Yanqing QIN^1,2, Ke CHEN^1,2, Lu CHEN^1,2..., Xiao ZHANG^1,2, Haoming DING^1,2, Mian LI^1,2, Yiming ZHANG^1,2, Shiyu DU^1,2, Zhifang CHAI^1,2 and Qing HUANG^1,2,*|Show fewer author(s)

Author Affiliations

¹1. Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

²2. Qianwan Institute of CNiTECH, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

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DOI: 10.15541/jim20200529 Cite this Article

Youbing LI, Yanqing QIN, Ke CHEN, Lu CHEN, Xiao ZHANG, Haoming DING, Mian LI, Yiming ZHANG, Shiyu DU, Zhifang CHAI, Qing HUANG. Molten Salt Synthesis of Nanolaminated Sc₂SnC MAX Phase[J]. Journal of Inorganic Materials, 2021, 36(7): 773 Copy Citation Text

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Comparison of XRD patterns between (a) powders synthesized through the reaction between Sc, Sn, and C mixtures, and (b) the simulated one of Sc2SnC

1. Comparison of XRD patterns between (a) powders synthesized through the reaction between Sc, Sn, and C mixtures, and (b) the simulated one of Sc₂SnC

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Comparison between experimental (blue line) and calculated XRD (red line) pattern of Sc2SnC

2. Comparison between experimental (blue line) and calculated XRD (red line) pattern of Sc₂SnC

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3. (a) SEM image and (b) EDS analysis of Sc₂SnC, (c) elemental mappings of Sc, Sn and C elements

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4. (a) Crystal structure , (b) calculated phonon dispersion and (c) band structure of Sc₂SnC, and (d) projected density of Sc, Sn, and C atom states in the Sc₂SnC

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Site	Element	x	y	z	Symmetry	Wyckoff symbol
M	Sc	1/3	2/3	0.5786	3m	4f
A	Sn	1/3	2/3	0.2500	m2	2d
X	C	0	0	0	m	2a

Table 1.

Atomic positions in Sc₂SnC determined from the Rietveld refinement

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Compound	a/nm	c/nm	C₁₁	C₁₂	C₁₃	C₃₃	C₄₄	C₆₆	B	G	E	G/B	v	Ref.
Sc₂SnC	0.3368	1.4653	197	63	47	182	67	53	100	63	157	0.630	0.238	This work
V₂SnC	0.3134	1.2943	336	126	122	304	85	105	190	95	244	0.500	0.286	[35]
Ti₂SnC	0.3136	1.3641	337	86	102	329	169	126	176	138	328	0.784	0.188	[39]
Zr₂SnC	0.3352	1.4681	269	80	107	290	148	94	157	110	368	0.700	0.215	[39]
Hf₂SnC	0.3308	1.4450	330	54	126	292	167	138	173	132	316	0.763	0.195	[39]
Nb₂SnC	0.3244	1.3754	341	106	169	321	183	118	209	126	314	0.603	0.250	[39]

Table 2.

Theoretically predicted Lattice parameters (nm), calculated elastic constants, C_ij(GPa), bulk modulus, B (GPa), shear modulus, G (GPa), and Young’s modulus, E (GPa), Pugh ratio, G/B, and Poisson ratio, v, of different compounds