New Solid Solution MAX Phases: (Ti0.5, V0.5)3AlC2, (Nb0.5, V0.5)2AlC, (Nb0.5, V0.5)4AlC3 and (Nb0.8, Zr0.2)2AlC

被引：106

作者：

Naguib, M. ^{[1
]}

Bentzel, G. W. ^{[1
]}

Shah, J. ^{[1
]}

Halim, J. ^{[1
,2
]}

Caspi, E. N. ^{[3
]}

Lu, J. ^{[2
]}

Hultman, L. ^{[2
]}

Barsoum, M. W. ^{[1
]}

机构：

[1] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[2] Linkoping Univ, Dept Phys Chem & Biol IFM, Thin Film Phys Div, SE-58183 Linkoping, Sweden

[3] Nucl Res Ctr Negev, IL-84190 Beer Sheva, Israel

来源：

MATERIALS RESEARCH LETTERS | 2014年 / 2卷 / 04期

基金：

美国国家科学基金会;

关键词：

MAX Phase; Solid Solution; Rietveld Analysis; HRTEM; Lattice Parameter;

D O I：

10.1080/21663831.2014.932858

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We synthesized the following previously unreported aluminum-containing solid solution M(n+1)AX(n) phases: (Ti-0.5, V-0.5)(3)AlC2, (Nb-0.5, V-0.5)(2)AlC, (Nb-0.5, V-0.5)(4)AlC3 and (Nb-0.8, Zr-0.2)(2)AlC. Rietveld analysis of powder X-ray diffraction patterns was used to calculate the lattice parameters and phase fractions. Heating Ti, V, Al and C elemental powders-in the molar ratio of 1.5: 1.5: 1.3: 2-to 1, 450 degrees C for 2 h in flowing argon, resulted in a predominantly phase pure sample of (Ti-0.5, V-0.5)(3)AlC2. The other compositions were not as phase pure and further work on optimizing the processing parameters needs to be carried out if phase purity is desired.

引用

页码：233 / 240

页数：8