Key developments in high temperature structural silicides

Petrovic, J. J.; Vasudévan, A.K.

doi:10.1016/s0921-5093(98)01043-0

Cited by 273 publications

(113 citation statements)

References 11 publications

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“…Aluminides have found widespread applications as high temperature materials, especially at temperatures below 1000°C [80]. The most common aluminides in practice are nickel aluminides, titanium aluminides and iron aluminides.…”

Section: Nickel Aluminidesmentioning

confidence: 99%

Microstructures and oxidation behavior of some Molybdenum based alloys

Ray

2011

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Section: Nickel Aluminidesmentioning

confidence: 99%

Microstructures and oxidation behavior of some Molybdenum based alloys

Ray

2011

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“…Stress measurements were made by collimating the incident X-ray beam to obtain a spot size of 2 mm on the specimens. The XRD elastic constants used were calculated from bulk values (E = 380 GPa, υ = 0.3 for MoSi 2 , and E =195 GPa, υ = 0.25 for stainless steel). The hoop stresses were measured at 16 positions ( 8 each in stainless steel and MoSi 2 ) along the diameter by stepping in increments of 0.5 mm.…”

Section: X-ray Diffractionmentioning

confidence: 99%

“…Molybdenum disilicide (MoSi 2 ) is a potential high temperature structural material owing to its excellent oxidation resistance, high melting temperature (2030 o C), relative low density (6.24 g/cm 3 ), high thermal conductivity (52 W/mK),a brittle to ductile transition near 1000ûC, and stability in a variety of corrosive and oxidative environments [1][2][3][4][5]. Some potential uses for MoSi 2 include furnace components, gas burners and ignitors, gas injection tubes, high temperature nozzles, temperature sensor sheaths, and periscope sight tubes [1,2,6].…”

Section: Introductionmentioning

confidence: 99%

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Use of a Cobalt-Based Metallic Glass for Joining MoSi<sub>2</sub> to Stainless Steel

Vaidya

Rangaswamy

Butt

et al. 2002

JMNM

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The successful use of a cobalt-based metallic-glass in joining molybdenum disilicide (MoSi 2 ) to stainless steel 316L was demonstrated. Such joints are being investigated for sensor tube applications in glass melting operations. The cobalt-based metallic-glass (METGLAS TM 2714A) was found to wet the MoSi 2 and stainless steel surfaces and provide high quality joints. Joining was completed at 1050 o C for 60 minutes in two different ways; either by feeding excess braze into the braze gap upon heating or by constraining the MoSi 2 /stainless steel assembly with an alumina (Al 2 O 3 ) fixture during the heating cycle. These steps were necessary to ensure the production of a high quality void free joint. Post-brazing metallographic evaluations coupled with quantitative elemental analysis indicated the presence of a Co-Cr-Si ternary phase with CoSi and CoSi 2 precipitates within the braze. The residual stresses in these molybdenum disilicide (MoSi 2 )/stainless steel 316 L joints were evaluated using X-ray diffraction and instrumented indentation techniques. These measurements revealed that significant differences are induced in the residual stresses in MoSi 2 and stainless steel depending on the joining technique employed. Push-out tests were carried out on these joints to evaluate the joint strength.

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“…Transition metal silicides are of great interest as high-temperature materials, due to their specific properties such as high melting point, good thermal stability, excellent oxidation resistance, good creep OPEN ACCESS tolerance, and high mechanical strength at elevated temperatures [1][2][3]. Intermetallic silicides of the Mo-Si, Cr-Si, Ti-Si, V-Si, Nb-Si, and Ta-Si systems are potential candidates for high-temperature applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Studies on Self-Propagating High-Temperature Synthesis of Ta5Si3 Intermetallics

Yeh

Chou

Hwang

2015

Metals

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Formation of Ta5Si3 by self-propagating high-temperature synthesis (SHS) from elemental powder compacts of Ta:Si = 5:3 was experimentally and numerically studied. Experimental evidence showed that the increase of either sample density or preheating temperature led to the increase of combustion wave velocity and reaction temperature. The apparent activation energy, Ea ≈ 108 kJ/mol, was determined for the synthesis reaction. Based upon numerical simulation, the Arrhenius factor of the rate function, K0 = 2.5 × 10 7 s −1 , was obtained for the 5Ta + 3Si combustion system. In addition, the influence of sample density on combustion wave kinetics was correlated with the effective thermal conductivity (keff) of the powder compact. By adopting 0.005 ≤ keff/kbulk ≤ 0.016 in the computation model, the calculated combustion velocity and temperature were in good agreement with experimental data of the samples with compaction densities between 35% and 45% theoretical maximum density (TMD).

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Key developments in high temperature structural silicides

Cited by 273 publications

References 11 publications

Microstructures and oxidation behavior of some Molybdenum based alloys

Microstructures and oxidation behavior of some Molybdenum based alloys

Use of a Cobalt-Based Metallic Glass for Joining MoSi<sub>2</sub> to Stainless Steel

Experimental and Numerical Studies on Self-Propagating High-Temperature Synthesis of Ta5Si3 Intermetallics

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