Fabrication of an r-Al2Ti intermetallic matrix composite reinforced with α-Al2O3 ceramic by discontinuous mechanical milling for thermite reaction

Mosleh, Aboozar; Ehteshamzadeh, Maryam; Mousavian, R. Taherzadeh

doi:10.1007/s12613-014-1006-6

Cited by 9 publications

(2 citation statements)

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“…Cold welding and fracturing are the two major phenomena in the mechanical alloying process. The alloying procedure continues until the rate of welding and fracturing becomes balanced (Mosleh, Ehteshamzadeh, and Mousavian 2014;Mousavian et al 2014;Zebarjad and Sajjadi 2006;Khakbiz and Akhlaghi 2009;Rivera et al 2012;Nekouee et al 2015;Forouzan et al 2015;.…”

Section: Introductionmentioning

confidence: 99%

Microstructural characterization of ball-milled metal matrix nanocomposites (Cr, Ni, Ti)-25 wt% (Al₂O_3np, SiC_np)

Afkham

Khosroshahi

Mousavian

et al. 2016

Particulate Science and Technology

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The microstructure of high-temperature metals such as Ti, Ni, and Cr can be modified using ceramic nanoparticles to form metal matrix nanocomposites (MMNCs). Such materials are generally prepared via powder metallurgy routes. In this study, 25 wt. % SiCnp and Al2O3np were separately ball-milled as a reinforcement of Ti, Cr, and Ni matrices to investigate their effects on the phase formation and morphology of the MMNCs. The XRD, SEM, and FESEM results indicated that the alumina-metal system could not be thermodynamically stable in a high-energy ball mill, while the SiC reinforcement could be retained and milled with the metals even after 24 hours. It was further observed that the distribution of nanoparticles was not affected by the type of metal, ceramic, and milling time. Finally, it was determined that the nanoparticles significantly reduced the average particle size of composite powders.

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Section: Introductionmentioning

confidence: 99%

Microstructural characterization of ball-milled metal matrix nanocomposites (Cr, Ni, Ti)-25 wt% (Al₂O_3np, SiC_np)

Afkham

Khosroshahi

Mousavian

et al. 2016

Particulate Science and Technology

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“…In addition, due to the long milling times (tens and even hundreds of hours), the final products become contaminated by substances erased from the walls of mill vials and balls. Thus, the drawbacks of this process lie in high-energy consumption and low product purity [19][20][21][22]. SHS process has been used so far as an inexpensive process, in which highly exothermic reactions between the constituents become self-sustaining and proceed via a combustion propagation wave through an entire sample, providing an attractive low cost alternative to conventional methods of producing advanced materials [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

A three-step synthesis process of submicron boron carbide powders using microwave energy

Forouzan

Mousavian

Sharif

et al. 2015

J Therm Anal Calorim

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In this study, a three-step synthesis process is proposed for the production of submicron B 4 C powders. The initial step is the mechanical activation of a Mg-C-B 2 O 3 mixture, which is carried out by using a high-energy planetary ball mill. The second phase is the microwaveassisted combustion synthesis, used to fabricate the MgO-B 4 C composite powders. The final stage is an acid leaching for removing the MgO phase. The results of DSC, XRD, and SEM analyses indicated that mechanical activation was a vital process for microwave synthesis and that no starting powders were remained unreacted after microwave heating. A considerable reduction in reaction temperature was obtained from DSC analysis after mechanical activation process. TG results indicated that separated milling of Mg with B 2 O 3 powders would avoid the formation of gases during exothermic reactions. Finally, it was found that submicron boron carbide powders with an average crystallite size about 114 nm were produced with a high purity after acid leaching.

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Recombinant peptide fusion construction for protein‐templated catalytic palladium nanoparticles

Tejada‐Vaprio

Mosleh

Mukherjee

et al. 2020

Biotechnology Progress

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Although peptide‐enabled synthesis of nanostructures has garnered considerable interest for use in catalytic applications, it has so far been achieved mostly via Fmoc based solid phase peptide synthesis. Consequently, the potential of longer peptides in nanoparticle synthesis have not been explored largely due to the complexities and economic constraints of this chemical synthesis route. This study examines the potential of a 45‐amino acid long peptide expressed as fusion to green fluorescence protein (GFPuv) in Escherichia coli for use in palladium nanoparticle synthesis. Fed‐batch fermentation with E. coli harboring an arabinose‐inducible plasmid produced a product containing three copies of Pd4 peptide fused to N‐terminus of GFPuv ((Pd4)3‐GFPuv). Using the intrinsic fluorescence of GFPuv, expression and enrichment of the fusion product was easily monitored. Crude lysate, desalted lysate, and an ion‐exchange enriched fraction containing (Pd4)3‐GFPuv were used to test the hypothesis that high purity of the biologic material used as the nanoparticle synthesis template may not be necessary. Nanoparticles were characterized using a variety of material science techniques and used to catalyze a model Suzuki–Miyaura coupling reaction. Results demonstrated that palladium nanoparticles can be synthesized using the soluble cell extract containing (Pd4)3‐GFPuv without extensive purification or cleavage steps, and as a catalyst the crude mixture is functional.

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Fabrication of an r-Al2Ti intermetallic matrix composite reinforced with α-Al2O3 ceramic by discontinuous mechanical milling for thermite reaction

Cited by 9 publications

References 20 publications

Microstructural characterization of ball-milled metal matrix nanocomposites (Cr, Ni, Ti)-25 wt% (Al₂O_3np, SiC_np)

Microstructural characterization of ball-milled metal matrix nanocomposites (Cr, Ni, Ti)-25 wt% (Al₂O_3np, SiC_np)

A three-step synthesis process of submicron boron carbide powders using microwave energy

Recombinant peptide fusion construction for protein‐templated catalytic palladium nanoparticles

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Fabrication of an r-Al2Ti intermetallic matrix composite reinforced with α-Al2O3 ceramic by discontinuous mechanical milling for thermite reaction

Cited by 9 publications

References 20 publications

Microstructural characterization of ball-milled metal matrix nanocomposites (Cr, Ni, Ti)-25 wt% (Al2O3np, SiCnp)

Microstructural characterization of ball-milled metal matrix nanocomposites (Cr, Ni, Ti)-25 wt% (Al2O3np, SiCnp)

A three-step synthesis process of submicron boron carbide powders using microwave energy

Recombinant peptide fusion construction for protein‐templated catalytic palladium nanoparticles

Contact Info

Product

Resources

About

Microstructural characterization of ball-milled metal matrix nanocomposites (Cr, Ni, Ti)-25 wt% (Al₂O_3np, SiC_np)

Microstructural characterization of ball-milled metal matrix nanocomposites (Cr, Ni, Ti)-25 wt% (Al₂O_3np, SiC_np)