(Cr,Mn)2AlC solid solutions have attracted much attention due to their magnetic property which will be enhanced with increasing Mn solubility. So far, only 3 at.-% Mn solubility in (Cr,Mn)2AlC bulk materials has been reported. This work reports on the synthesis of (Cr,Mn)2AlC solid solutions via a new reaction route with AlCr2, C and Mn as starting materials. The Mn solubility increases with increasing the starting Mn content. The maximum solubility of Mn in (Cr,Mn)2AlC was 8.3 at.-%, corresponding to a resultant solid solution (Cr0.83Mn0.17)2AlC. However, increasing the Mn content in the starting mixture caused the formation of impurities in the sintered samples. A dense (Cr0.95Mn0.05)2AlC ceramic has been achieved by hot-pressing the mixture of AlCr2/C/0.1Mn. The mechanical properties and thermal expansion coefficient of (Cr0.95Mn0.05)2AlC were measured.
BarsoumMW.The Mn+1AXn phases: a new class of solids; thermodynamically stable nanolaminates. Prog Solid State Chem. 2000;28:201–281. doi: 10.1016/S0079-6786(00)00006-6
2.
SunZM.Progress in research and development on MAX phases: a family of layered ternary compounds. Int Mater Rev. 2011;56:143–166. doi: 10.1179/1743280410Y.0000000001
3.
WangJY, ZhouYC.Recent progress in theoretical prediction, preparation, and characterization of layered ternary transition-metal carbides. Annu Rev Mater Res. 2009;39:10.1–29. doi: 10.1146/annurev-matsci-082908-145340
4.
BarsoumMW, El-RaghyT.Synthesis and characterization of a remarkable ceramic: Ti3SiC2. J Am Ceram Soc. 1996;79:1953–1956. doi: 10.1111/j.1151-2916.1996.tb08018.x
5.
ZhangHB, ZhouYC, BaoYW, Improving the oxidation resistance of Ti3SiC2 by forming a Ti3Si0.9Al0.1C2 solid solution. Acta Mater. 2004;52:3631–3637. doi: 10.1016/j.actamat.2004.04.015
6.
YuWB, LiSB, SloofWG.Microstructure and mechanical properties of a Cr2Al(Si)C solid solution. Mater Sci Eng A. 2010;527:5997–6001. doi: 10.1016/j.msea.2010.05.093
7.
ZhouYC, ChenJX, WangJY.Strengthening of Ti3AlC2 by incorporation of Si to form Ti3Al1-xSixC2 solid solutions. Acta Mater. 2006;54:1317–1322. doi: 10.1016/j.actamat.2005.10.057
8.
WanDT, HeLF, ZhengLL, A new method to improve the high-temperature mechanical properties of Ti3SiC2 by substituting Ti with Zr, Hf, or Nb. J Am Ceram Soc. 2010;93:1749–1753. doi: 10.1111/j.1551-2916.2010.03866.x
9.
TianWB, SunZM, HashimotoH, Synthesis, microstructure and properties of (Cr1−xVx)2AlC solid solutions. J Alloys Compd. 2009;484:130–133. doi: 10.1016/j.jallcom.2009.04.111
10.
CabiochT, EklundP, MauchampV, Tailoring of the thermal expansion of Cr2(Alx,Ge1−x)C phases. J Eur Ceram Soc. 2013;33:897–904. doi: 10.1016/j.jeurceramsoc.2012.10.008
11.
MengFL, ZhouYC, WangJY.Strengthening of Ti2AlC by substituting Ti with V. Scr Mater. 2005;53:1369–1372. doi: 10.1016/j.scriptamat.2005.08.030
12.
GangulyA, ZhenT, BarsoumMW. Synthesis and mechanical properties of Ti3GeC2 and Ti3(SixGe1-x)C2 (x = 0.5, 0.75) solid solutions. J Alloys Compd. 2004;376:287–295. doi: 10.1016/j.jallcom.2004.01.011
13.
ScabaroziT, GangulyA, HettingerJD, Electronic and thermal properties of Ti3Al(C0.5,N0.5)2, and Ti2Al(C0.5,N0.5) and Ti2AlN. J Appl Phys. 2008;104:073713-1-6.
14.
YuW, MauchampV, CabiochT, Solid solution effects in the Ti2Al(CxNy) MAX phases: synthesis, microstructure, electronic structure and transport properties. Acta Mater. 2014;80:421–434. doi: 10.1016/j.actamat.2014.07.064
15.
DahlqvistM, AllingB, AbrikosovIA, Magnetic nanoscale laminates with tunable exchange coupling from first principles. Phys Rev B. 2011;84:220403-1-5. doi: 10.1103/PhysRevB.84.220403
16.
MockuteA, PerssonPOÅ, MagnusF, Synthesis and characterization of arc deposited magnetic (Cr,Mn)2AlC MAX phase films. Phys Status Solidi RRL. 2014;8:420–423. doi: 10.1002/pssr.201409087
17.
MockuteA, LuJ, MoonEJ, Solid solubility and magnetism upon Mn incorporation in bulk Cr2AlC and Cr2GaC MAX phases. Mater Res Lett. 2015;3:16–22. doi: 10.1080/21663831.2014.944676
18.
MockuteA, DahlqvistM, EmmerlichJ, Synthesis and ab initio calculations of nanolaminated (Cr,Mn)2AlC compounds. Phys Rev B. 2013;87:094113-1-4. doi: 10.1103/PhysRevB.87.094113
19.
IngasonAS, MockuteA., DahlqvistM, Magnetic self-organized atomic laminate from first principles and thin film synthesis. Phys Rev Lett. 2013;110:195502-1-5. doi: 10.1103/PhysRevLett.110.195502
20.
LinS, TongP, WangBS, Magnetic and electric/thermal transport properties of Mn-doped Mn+1AXn phase compounds Cr2-xMnxGaC (0 ≤ x ≤ 1). J Appl Phys. 2013;113:053502-1-5.
21.
SalikhovR, SemisalovaAS, PetruhinsA, Magnetic anisotropy in the (Cr0.5Mn0.5)2GaC MAX phase. Mater Res Lett. 2015;3:156–160. doi: 10.1080/21663831.2015.1036324
22.
IngasonAS, PetruhinsA, DahlqvistM, A nanolaminated magnetic phase: Mn2GaC. Mater Res Lett. 2014;2:89–93. doi: 10.1080/21663831.2013.865105
23.
GuanC.Synthesis of fine and high purity Cr2AlC powders by novel method. Adv Appl Ceram. 2016;115:505–508. doi: 10.1179/1743676115Y.0000000026
24.
XiaoLO, LiSB, SongGM, Synthesis and thermal stability of Cr2AlC. J Eur Ceram Soc. 2011;31:1497–1502. doi: 10.1016/j.jeurceramsoc.2011.01.009
