Lattice variations and phase evolutions during combustion reactions in Mo–Si–Al system

Ghayoumabadi, M. Esmaeili; Saidi, A.; Abbasi, M.H.

doi:10.1016/j.jallcom.2008.04.033

Cited by 19 publications

(6 citation statements)

References 29 publications

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“…Under the chosen conditions (100.8–134.4 J·mm −3 ED) and with the addition of 30 wt.% AlSi10Mg to the MoSi 2 , the C11b tetragonal lattice of MoSi 2 expanded until achieving a hexagonal Mo(Si 0.67 Al 0.33 ) 2 (x = 0.33 mol) structure, while no further C40 lattice expansion was detected in forming the Al-rich orthorhombic C54 structure. In contrast, the formation of C54 orthorhombic structures with Mo 10 Si 7 Al 13 , MoAl 1.3 Si 0.7 , and Al 4 Mo 3 Si 2 is claimed in [ 4 , 9 , 10 , 11 ]; the formation of the silicon lean Al 8 Mo 3 phase is reported in [ 14 ].…”

Section: Resultsmentioning

confidence: 99%

“…The main processing routes explored so far for preparation of Mo(Si,Al) 2 are arc melting [ 3 , 4 , 5 , 6 ], self-propagating high-temperature synthesis (SHS) [ 7 , 8 , 9 , 10 ], hot pressing [ 11 ], spark plasma sintering (SPS) [ 12 ], and some others [ 13 ], as specified in Table 1 .…”

Section: Introductionmentioning

confidence: 99%

“…In [ 9 ], a similar trend of C54 phase formation was reported. It was also found that at 17.86 wt.% Al addition, the C54 phase with an Al 4 Mo 3 Si 2 composition is developed [ 10 ]. A higher percentage of Al does not promote the development of monophasic C54, since the segregation of Mo suppresses the combustion synthesis.…”

Section: Introductionmentioning

confidence: 99%

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In Situ Mo(Si,Al)2-Based Composite through Selective Laser Melting of a MoSi2-30 wt.% AlSi10Mg Mixture

et al. 2020

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The laser power bed fusion approach has been successfully employed to manufacture Mo(Si,Al)2-based composites through the selective laser melting of a MoSi2-30 wt.% AlSi10Mg mixture for high-temperature structural applications. Composites were manufactured by leveraging the in situ reaction of the components during printing at 150–300 W laser power, 500–1000 mm·s−1 laser scanning speed, and 100–134 J·mm−3 volumetric energy density. Microcomputed tomography scans indicated a negligible induced porosity throughout the specimens. The fully dense Mo(Si1-x,Alx)2-based composites, with hardness exceeding 545 HV1 and low roughness for both the top (horizontal) and side (vertical) surfaces, demonstrated that laser-based additive manufacturing can be exploited to create unique structures containing hexagonal Mo(Si0.67Al0.33)2.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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In Situ Mo(Si,Al)2-Based Composite through Selective Laser Melting of a MoSi2-30 wt.% AlSi10Mg Mixture

et al. 2020

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“…The combustion temperature of Al doped MoSi 2 in the SHS process is in the range of 1640-1780°C [13]. According to the Mo-Si-Al ternary phase diagram [14], a molar ratio of 33.3:40.0:26.7 (Mo:Si:Al) was designed to get Mo(Si 0.6 , Al 0.4 ) 2 with C40 structure.…”

Section: Preparation Of Mo(si Al) 2 Feedstock Powdermentioning

confidence: 99%

Anti-ablation behavior of air plasma-sprayed Mo(Si, Al)2 coating

Hou

Ning

Wang

et al. 2015

Surface and Coatings Technology

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“…Hybrid composites with matrix hardening by silicon carbides and nitrides [5] have been proposed to increase the crack resistance and yield strength at high temperature but this hardening of brittle phases has proved to be unreliable. There are attempts to reduce the oxidizability of Mo-Si alloys by doping with zirconium [6] and aluminum [7].…”

Section: Introductionmentioning

confidence: 99%