Synthesis, microstructure and properties of MoSi 2 –5 vol%Al 2 O 3 composites
Source abstract
Abstract
Abstract MoSi 2 –5 vol%Al 2 O 3 composites were prepared in situ by self-propagating combustion synthesis from Mo, Si, Al and MoO 3 powders. The combustion mode and temperature of the self-propagating reaction and phase composition of the product were investigated. The results showed that the combustion mode was a steady-state self-propagating process and the composite product was composed of MoSi 2 and Al 2 O 3 . MoSi 2 –5 vol%Al 2 O 3 composites were consolidated by vacuum hot-pressed sintering from 1300 to 1600 °C to produce composites with high density. MoSi 2 –5 vol%Al 2 O 3 composites sintered at 1400 °C exhibited a fine microstructure and excellent mechanical properties: grain size ~5 μm, Vicker׳s hardness 11.14 GPa, bending strength 435 MPa, and fracture toughness 4.53 MPa m 1/2 .
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · MXene and MAX Phase Materials · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Intermetallic compounds for high-temperature structural use10.1126/science.243.4891.616 ↗
2. A comparative overview of molybdenum disilicide composites10.1016/0921-5093(92)90308-N ↗
3. Toughening strategies for MoSi2-based high temperature structural silicides10.1016/S0966-9795(00)00044-3 ↗
4. Addition effects of aluminum and in situ formation of alumina in MoSi210.1023/A:1004583625750 ↗
5. High-temperature structural intermetallics10.1016/S1359-6454(99)00301-8 ↗
6. Effects of tungsten and aluminum additions on the formation of molybdenum disilicide by mechanically-induced self-propagating reaction10.1016/j.jallcom.2009.09.189 ↗
7. Synthesis and mechanical properties of nanocrystalline MoSi2–SiC composite10.1016/j.scriptamat.2007.09.038 ↗
8. Preparation and properties of MoSi2 composites reinforced by TiC, TiCN, and TiB210.1016/j.msea.2005.01.009 ↗
9. Fabrication and characterization of TiCw/MoSi2 and SiCw/MoSi2 composites10.1016/S0167-577X(01)00398-6 ↗
10. ZrO2-reinforced MoSi2 matrix composites10.1002/9780470313848.ch2 ↗
11. Multilayer composites in Al2O3/MoSi2 system10.1016/S0254-0584(00)00448-X ↗
12. MoSi2–Al2O3 electroconductive ceramic composites10.1016/j.ceramint.2003.11.015 ↗
13. Novel fabrication route to Al2O3–TiN nanocomposites via spark plasma sintering10.1111/j.1551-2916.2006.00945.x ↗
14. Combustion synthesis of advanced materials: Part I. Reaction parameters10.1016/0079-6425(94)00011-5 ↗
15. Combustion synthesis of advanced materials: Part II. Classification, applications and modeling10.1016/0079-6425(94)00012-3 ↗
16. Preparation of MoSi2/Al2O3 composites by SHS10.1016/S0151-9107(98)80002-0 ↗
17. Reaction thermodynamics of MoSi2–WSi2 composites in the thermal explosion mode of SHS
18. Self-propagating high-temperature synthesis10.1007/BF00576271 ↗
19. Combustion synthesis of (Mo1−xCrx)Si2(x=0.00–0.30) alloys in SHS mode10.1016/j.apt.2011.01.003 ↗
20. Effects of boron addition on the formation of MoSi2 by combustion synthesis mode10.1016/j.jallcom.2010.01.080 ↗
21. Advanced engineering ceramics10.1002/1521-4095(20020517)14:10<709::AID-ADMA709>3.0.CO;2-9 ↗
22. Reactive sintering of molybdenum disilicide by spark plasma sintering from mechanically activated powder mixtures: processing parameters and properties10.1016/j.jallcom.2007.10.141 ↗
23. Low temperature oxidation of fully dense and porous MoSi210.1016/S0921-5093(98)01078-8 ↗
24. Effect of small aluminum additions on microstructure and mechanical properties of molybdenum disilicide10.1016/S0966-9795(98)00064-8 ↗
25. Fabrication and mechanical properties of monoliths MoSi2 by spark plasma sintering10.1016/S0025-5408(02)00852-8 ↗
26. Processing and properties of MoSi2–SiC and MoSi2–Al2O310.1016/S0921-5093(98)01073-9 ↗
27. Microstructure modification of MoSi2 through aluminum additions10.1016/0956-716X(93)90192-U ↗
28. Processing, microstructure and properties of C40 Mo(Si,Al)2/Al2O3 composites10.1016/S0921-5093(03)00430-1 ↗
29. The effect of temperature on the in situ synthesis-sintering and mechanical properties of MoSi2 prepared by spark plasma sintering10.1016/j.jallcom.2013.09.125 ↗
30. Hardness and toughness of MoSi2 and MoSi2–SiC composite prepared by reactive sintering of powders10.1016/S0921-5093(98)00517-6 ↗
31. Processing and characterization of nanocrystalline molybdenum disilicide consolidated by hot isostatic pressing (HIP)10.1016/0965-9773(95)00313-4 ↗
32. In situ synthesis of SiCw/MoSi2 composite through SPS process10.1016/j.jallcom.2007.07.103 ↗
33. MoSi2–ZrO2 composites-fabrication, microstructures and properties10.1016/S0921-5093(98)01053-3 ↗
34. Crack deflection processes—I. Theory10.1016/0001-6160(83)90046-9 ↗