ZrO2 and ZrO2SiC particle reinforced MoSi2 matrix composites

Petrovic, J. J.; Bhattacharya, A. K.; Honnell, R.E.; Mitchell, T. E.; Wade, R.K.; McClellan, K. J.

doi:10.1016/0921-5093(92)90332-u

Cited by 85 publications

(15 citation statements)

References 14 publications

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“…Theoretical densities of MoSi 2 + 15vol%ZrO 2 and (Mo 0.9 Cr 0.1 )Si 2 + 15vol%ZrO 2 are 6.16 and 6.04 g/cm 3 , calculated from a linear combination rule. The sintering density of different materials is shown in Table 1.…”

Section: Sintering Densitymentioning

confidence: 99%

“…Theoretical density of MoSi 2 and (Mo 0.9 Cr 0.1 )Si 2 silicides are 6.25 and 6.10 g/cm 3 , respectively, measured from XRD. Theoretical densities of MoSi 2 + 15vol%ZrO 2 and (Mo 0.9 Cr 0.1 )Si 2 + 15vol%ZrO 2 are 6.16 and 6.04 g/cm 3 , calculated from a linear combination rule.…”

Section: Sintering Densitymentioning

confidence: 99%

“…), and composite reinforced with refractory and ceramic particles and fibres (SiC, Si 3 N 4 , Al 2 O 3 and ZrO 2 ) [2]. Significant increasing in fracture toughness and strengthening at high temperature has been reported in MoSi 2 -ZrO 2 composites in terms of phase transformation toughening of ZrO 2 , but the degraded oxidation resistance was also observed, especially with a high ZrO 2 content [3] [4].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Property and Oxidation Behaviours of (Mo,Cr)Si2 + ZrO2 Composite Produced by Pressure-Less Sintering

Yao¹,

Ström²,

Li³

et al. 2016

MSCE

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A composites of (Mo0.9Cr0.1)Si2 + 15vol% ZrO2 was prepared with powder metallurgy and PressureLess Sintering (PLS) method, aiming at applications of high temperature structural materials. Mechanical properties of the composites were assessed with hardness, indentation fracture toughness Kc and KIC tested using SEVNB, flexure strength at room temperature and 1200˚C, and isothermal oxidation at 1400˚C. The results showed that the native silica oxide and molybdenum-oxides on the silicide feedstock surface were significantly reduced in terms of Cr-alloying. (Mo0.9Cr0.1)Si2 and its composite also exhibited improved sinterability and grain growth, owing to the presence of (Cr, Mo)5Si3 at grain boundaries. Fracture toughness of the composite was increased by a factor of 1.6 to that in the monolithic silicide. Mechanical property of the composite at high temperature was not affected by Cr addition. However, the high temperature oxidation resistance was greatly improved in the (Mo0.9Cr0.1)Si2 + 15vol% ZrO2 compared with the non Cr-alloyed counterpart. The Cr-alloying effects on the microstructure, fracture behaviour, and high temperature oxidation resistance were discussed.

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Section: Sintering Densitymentioning

confidence: 99%

Section: Sintering Densitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Property and Oxidation Behaviours of (Mo,Cr)Si2 + ZrO2 Composite Produced by Pressure-Less Sintering

Yao¹,

Ström²,

Li³

et al. 2016

MSCE

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“…MoSi 2 has received considerable attention in recent years for its potential application as a high-temperature structure material. Its properties provide a desirable combination of a high melting temperature, high modulus, high oxidation resistance in air, and a relatively low density [10,11]. In addition, the thermal and electrical conductivities are relatively high, and, therefore, it is also attractive for electronic interconnections, diffusion barriers, and heating element material in high-temperature furnaces operating in air up to approximately 1700°C [12,13].…”

Section: Introductionmentioning

confidence: 99%

Properties and rapid consolidation of nanocrystalline 8MoSi2-Si3N4 by high frequency induction heated sintering

Park

Yoon

et al. 2011

Met. Mater. Int.

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Nanopowders of MoSi2 and Si3N4 were synthesized from Mo2N and Si by high ball milling. Dense nanostructured 8MoSi2-Si3N4 composite was consolidated by high frequency induction heated sintering (HFIHS) method within two minutes from mechanically synthesized powders of MoSi2 and Si3N4. Highly dense 8MoSi2-Si3N4 composite with a relative density of up to 97 % was produced under simultaneous application of 80 MPa pressure and the induced current. The average grain size and mechanical properties (hardness and fracture toughness) of the composite were investigated.

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“…[20] Based on these results, we can als. [12][13][14][15] Several studies have indicated that lamination express the chemical reaction between Nb and MoSi 2 as toughening with ductile ligaments, which is based on the 35MoSi 2 ϩ 35Nb → 20NbSi 2 ϩ 7Mo 5 Si 3 ϩ 3Nb 5 Si 3 [1] crack bridging mechanism, could play an important role in improving the fracture properties of brittle materials. [16,17,18] In this equation, the (Nb, Mo)Si 2 phase is assumed to approximate NbSi 2 , because the former contains a small amount For example, Nb/MoSi 2 laminate composites have been shown to exhibit a sufficient fracture toughness (about of Mo element (about 2 at pct).…”

Section: Introductionmentioning

confidence: 99%

Interfacial modification and impact properties of Nb/MoSi2 laminate composites by the addition of ZrO2, NbSi2, and SiC particles

Lee

Yoshida

Fukunaga

2000

Metall Mater Trans A

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In this study, the results of a thermodynamical estimation indicate that the impact properties of Nb/ MoSi 2 laminate composites can be improved by suppressing the interfacial reaction. The effects of addition of SiC, NbSi 2 , and ZrO 2 on the impact properties and interfacial reaction of Nb/MoSi 2 laminate composites are also examined. Laminate composites, which comprise alternate layers of matrix mixture and Nb foil, were fabricated by the hot press process. Addition of ZrO 2 particle is clearly demonstrated to increase both the impact value and the sintered density of Nb/MoSi 2 laminate composites. The thickness of the interfacial reaction layer in Nb/MoSi 2 laminate composites dramatically decreases with increasing volume fraction of ZrO 2 particle. The suppression of the interfacial reaction is caused by the formation of ZrSiO 4 in the MoSi 2 -ZrO 2 matrix mixture. In addition, it appears that the reduction of the reaction layer promotes the plastic deformation of Nb foil and the interfacial delamination in laminate composites.

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ZrO2 and ZrO2SiC particle reinforced MoSi2 matrix composites

Cited by 85 publications

References 14 publications

Property and Oxidation Behaviours of (Mo,Cr)Si2 + ZrO2 Composite Produced by Pressure-Less Sintering

Property and Oxidation Behaviours of (Mo,Cr)Si2 + ZrO2 Composite Produced by Pressure-Less Sintering

Properties and rapid consolidation of nanocrystalline 8MoSi2-Si3N4 by high frequency induction heated sintering

Interfacial modification and impact properties of Nb/MoSi2 laminate composites by the addition of ZrO2, NbSi2, and SiC particles

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