Numerical investigation of solar collectors as a potential source for sintering of ZrB2

Vajdi, Mohammad; Bagheri, Saeed Mohammad; Moghanlou, Farhad Sadegh; Khorrami, Amin Shams

doi:10.53063/synsint.2021.128

Cited by 17 publications

(5 citation statements)

References 59 publications

(70 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to introduction of secondary phases in TiAl matrix, selecting the appropriate processing technique can be utilized to overcome these problems [9][10][11]. Compared to other conventional methods, spark plasma sintering route is one of the recently developed methods that has several superiorities like high processing speed, lower sintering temperatures, reproducibility leading to achieve refined and homogeneous microstructures, [21][22][23][24]. In present study, TiAl-based composite materials reinforced with 10, 15, 20, 25 and 30 wt% Ti 3 AlC 2 MAX phase were sintered by SPS method at temperature of 900 ºC under a load of 40 MPa for dwell time of 7 min.…”

Section: Introductionmentioning

confidence: 99%

Role of Ti3AlC2 MAX phase on characteristics of in-situ synthesized TiAl intermetallics. Part IV: mechanical properties

et al. 2022

View full text Add to dashboard Cite

In this study, the 4th part of a series of publications on the sintering and characterization of TiAl-Ti3AlC2 composite materials, the mechanical properties were measured and discussed. For this purpose, different contents of synthesized Ti3AlC2 reinforcement (10, 15, 20, 25, and 30 wt%) were added to metallic Ti and Al powders, then ball-milled and manufactured by spark plasma sintering (SPS) for 420 s at 900 ºC under 40 MPa. Flexural strength, fracture toughness and Vickers hardness were measured by 3-point technique, SENB method, and indentation technique, respectively. Increasing the Ti3AlC2 content resulted in improvement of the mechanical properties, so that TiAl-25 wt% Ti3AlC2 composite showed the best flexural strength and Vickers hardness (270 MPa and 4.11 GPa, respectively). Increasing amount of Ti3AlC additive had no significant effect on fracture toughness. Densification improvement, in-situ formation of Ti2AlC, and limitation of grain growth were recognized as the reasons of mechanical properties enhancement. In contrast, further addition of Ti3AlC2 (30 wt%) decreased the mechanical properties due to the reduction of density and formation of more Ti2AlC agglomerates in grain boundaries.

show abstract

Section: Introductionmentioning

confidence: 99%

Role of Ti3AlC2 MAX phase on characteristics of in-situ synthesized TiAl intermetallics. Part IV: mechanical properties

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Some parts of hypersonic vehicles and aircraft must be made of special materials that are resistant to oxidation at elevated temperatures. Ultrahigh temperature ceramics (UHTCs) have been scrutinized extensively as proper candidates for such applications [1][2][3][4][5]. It was elucidated that the UHTCs reinforced with a silicon carbide-like binary system of ZrB 2 -SiC have excellent oxidation resistance [6].…”

Section: Introductionmentioning

confidence: 99%

Oxidation response of ZrB2–SiC–ZrC composites prepared by spark plasma sintering

Jarvand

Balak

2022

Synth. Sinter.

View full text Add to dashboard Cite

Considering the importance and application of ultrahigh temperature ceramics in oxidizing environments, in this research, the effect of ZrC content and spark plasma sintering parameters (temperature, time and pressure) on the oxidation response of ZrB2–SiC composites has been investigated. After fabricating the ternary composite samples in different SPS conditions and with different amounts of ZrC, the post-sintering oxidation process was carried out in a box furnace at the temperature of 1400 °C. Increasing the time and temperature of the SPS process caused the decrease in the oxidation resistance of the samples. The reason for such observations was attributed to the extreme growth of grains with increasing the temperature and time of the sintering process despite the better densification of the samples. This research did not reach a clear result about the effect of SPS pressure on composites oxidation behavior. Increasing the amount of ZrC also did not have a positive effect on the oxidation resistance of the samples because this phase itself undergoes oxidation at low temperatures.

show abstract

“…Spark plasma sintering (SPS) has been used to overcome the poor low-temperature ductility of TiAl. Compared to the conventional powder metallurgical methods, SPS has many benefits such as control of sintering parameters, functional simplicity, high sintering speed, and good reproducibility which helps to obtain contaminant-free, homogeneous, and grain refined microstructures [11][12][13][14][15][16]. By the introduction of some metallic additive such as Co and Fe, the ductility of TiAl increased via the replacement of aluminum sites with the added metal atoms.…”

Section: Introductionmentioning

confidence: 99%

Role of Ti3AlC2 MAX phase on characteristics of in-situ synthesized TiAl intermetallics. Part I: sintering and densification

et al. 2021

View full text Add to dashboard Cite

Five TiAl–Ti3AlC2 composite samples containing (10, 15, 20, 25 and 30 wt% Ti3AlC2 MAX phase) were prepared by spark plasma sintering technique at 900 °C for 7 min under 40 MPa. For this purpose, metallic titanium and aluminum powders (aiming at the in-situ formation of the TiAl matrix phase) were ball-milled with predetermined contents of Ti3AlC2 MAX phase, which already was synthesized using the same metallic powders as well as graphite flakes. Displacement-time-temperature variations during the heating and sintering steps, displacement rate versus temperature, displacement rate versus time, and densification behavior were studied. Two sharp changes were detected in the diagrams: the first one, ~16 min after the start of the heating process due to the melting of Al, and the second one, after ~35 min because of the sintering progression and the applied final pressure. The highest relative densities were measured for the samples doped with 20 and 25 wt% Ti3AlC2 additives. More Ti3AlC2 addition resulted in decreased relative density because of the agglomeration of MAX phase particles.

show abstract

Numerical investigation of solar collectors as a potential source for sintering of ZrB2

Cited by 17 publications

References 59 publications

Role of Ti3AlC2 MAX phase on characteristics of in-situ synthesized TiAl intermetallics. Part IV: mechanical properties

Role of Ti3AlC2 MAX phase on characteristics of in-situ synthesized TiAl intermetallics. Part IV: mechanical properties

Oxidation response of ZrB2–SiC–ZrC composites prepared by spark plasma sintering

Role of Ti3AlC2 MAX phase on characteristics of in-situ synthesized TiAl intermetallics. Part I: sintering and densification

Contact Info

Product

Resources

About