Search Results - "Vafa, Nasser Pourmohammadie"

Finite element simulation of mechanical properties of TaC-based core/graphite shell fibrous monolithic ceramics by Mollaabbaszadeh, Vahideh, Kakroudi, Mahdi Ghassemi, Shahedifar, Vahideh, Vafa, Nasser Pourmohammadie

“…This work utilizes the commercial finite element software ABAQUS to investigate the factors influencing the mechanical behavior of tantalum carbide…”
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Advantages and disadvantages of graphite addition on the characteristics of hot-pressed ZrB2–SiC composites by Pourmohammadie Vafa, Nasser, Ghassemi Kakroudi, Mahdi, Shahedi Asl, Mehdi

“…ZrB2–SiC–graphite composites with 0–35 vol% graphite flakes were densified via hot-pressing route at the temperature of 1800 °C under the uniaxial pressure of…”
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Hot pressing and oxidation behavior of ZrB2–SiC–TaC composites by Ghassemi Kakroudi, Mahdi, Dehghanzadeh Alvari, Masoumeh, Shahedi Asl, Mehdi, Pourmohammadie Vafa, Nasser, Rabizadeh, Taher

“…A ZrB2–20 vol% SiC–5 vol% TaC ceramic was sintered through the hot pressing process. By sintering for 60 min at 1850 °C under 40 MPa in a vacuum atmosphere, an…”
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Effects of SiC content on thermal shock behavior and elastic modulus of cordierite–mullite composites by Ghassemi Kakroudi, Mahdi, Pourmohammadie Vafa, Nasser, Shahedi Asl, Mehdi, Shokouhimehr, Mohammadreza

“…Cordierite (Mg2Al4Si5O18) is a commercially available ceramic with low fracture toughness that hampers its broad industrial applications. Although several…”
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Role of h-BN content on microstructure and mechanical properties of hot-pressed ZrB2–SiC composites by Pourmohammadie Vafa, Nasser, Ghassemi Kakroudi, Mahdi, Shahedi Asl, Mehdi

“…The addition of h-BN flacks (0–35 vol%) into the ZrB2–SiC composites was investigated in the present research. The composites were consolidated at a…”
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Densification, microstructure and mechanical properties of hot pressed tantalum carbide by Rezaei, Firouz, Kakroudi, Mahdi Ghassemi, Shahedifar, Vahideh, Vafa, Nasser Pourmohammadie, Golrokhsari, Mehdi

“…Monolithic tantalum carbide (TaC) ceramics were prepared by hot pressing in order to investigate the effect of hot pressing temperature on the densification…”
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Reactive hot pressing of ZrB2-based composites with changes in ZrO2/SiC ratio and sintering conditions. Part II: Mechanical behavior by Pourmohammadie Vafa, Nasser, Nayebi, Behzad, Shahedi Asl, Mehdi, Jaberi Zamharir, Mehran, Ghassemi Kakroudi, Mahdi

“…ZrB2-based ultra-high temperature composites reinforced with SiC and nano-ZrO2 particles were hot pressed. Taguchi method was used in order to investigate the…”
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SIGNIFICANCE OF HOT PRESSING PARAMETERS AND REINFORCEMENT SIZE ON SINTERABILITY AND MECHANICAL PROPERTIES OF ZrB2-25 VOL% SiC UHTCs by Jaberi, Zamharir M, Shahedi, Asl M, Ghassemi, Kakroudi M, Pourmohammadie, Vafa N

“…The influence of hot pressing parameters and SiC particle size on the bulk density, average ZrB2 grain size and Vickers hardness of ZrB2-25 vol% SiC ultrahigh…”
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SIGNIFICANCE OF HOT PRESSING PARAMETERS AND REINFORCEMENT SIZE ON DENSIFICATION BEHAVIOUR OF ZrB2-25 VOL% SiC UHTCs by Jaberi, Zamharir M, Shahedi, Asl M, Pourmohammadie, Vafa N, Ghassemi, Kakroudi M

“…ZrB2-25 vol% SiC ceramic composites were prepared by hot pressing and the effects of the processing parameters and SiC particle size (20 nm, 200 nm and 5…”
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Molten salt synthesis of in-situ TiC coating on graphite flakes by Behboudi, Fatemeh, Kakroudi, Mahdi Ghassemi, Vafa, Nasser Pourmohammadie, Faraji, Mostafa, Milani, Sahar Sajjadi

“…TiC coating was synthesized on graphite flakes (Gf) by molten salt synthesis (MSS) using metal Ti powder and alkali salts. Three different alkali chloride…”
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Investigation of AlN addition on the microstructure and mechanical properties of TiB2 ceramics by Mokhayer, Maryam Mohammadpour, Kakroudi, Mahdi Ghassemi, Milani, Sahar Sajjadi, Ghiasi, Hanieh, Vafa, Nasser Pourmohammadie

“…TiB2 ceramics with AlN addition were hot pressed at the temperature of 1800 °C under a load of 30 MPa for 1 h to investigate the effect of AlN particles…”
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Characterization of TaC-based fibrous-monolithic ceramics made of fibers with different core/shell volume ratios and orientations by Shahedifar, Vahideh, Ghassemi Kakroudi, Mahdi, Vafa, Nasser Pourmohammadie

“…In this paper, TaC-based/graphite fibrous monolithic ceramics made of fibers with three core/shell volume ratios (75/25, 70/30, and 65/35) and two orientations…”
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Synthesis and characterization of MgAl2O4 spinel precursor sol prepared by inorganic salts by Milani, Sahar Sajjadi, Kakroudi, Mahdi Ghassemi, Vafa, Nasser Pourmohammadie, Rahro, Sanaz, Behboudi, Fatemeh

“…Magnesium aluminate (MgAl2O4) spinel precursor sol was prepared using aluminum nitrate and magnesium nitrate as the precursors for alumina and magnesia,…”
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Characterization of Ni-doped pyrolyzed phenolic resin and its addition to the Al2O3–C refractories by Darban, Sina, Kakroudi, Mahdi Ghassemi, Vandchali, Mohammad Bavand, Vafa, Nasser Pourmohammadie, Rezaei, Firouz, Charkhesht, Vahid

“…The catalytic graphitization of the phenolic resin was investigated in the presence of various amounts of nickel nitrate at 600–1200 °C in a reducing…”
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Properties of alumina sol prepared via inorganic route by Milani, Sahar Sajjadi, Kakroudi, Mahdi Ghassemi, Vafa, Nasser Pourmohammadie, Mokhayer, Maryam Mohammadpour, Gharamaleki, Samira Haddadi

“…In this research, alumina sol has been synthesized via an inorganic route using inexpensive starting materials including aluminum nitride, deionized water,…”
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Consolidation and mechanical properties of hot pressed TaC-HfC-VC composites by Rezaei, Firouz, Kakroudi, Mahdi Ghassemi, Shahedifar, Vahideh, Vafa, Nasser Pourmohammadie

“…The need to improve the extremely high melting temperature materials used in hypersonic applications, has led to the search for ultra-high temperature ceramics…”
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Synthesis and Sintering of Ti3SiC2–SiC Composites through Reactive Hot-Pressing of TiC and Si Precursors by Amiri, Sheida Haji, Kakroudi, Mahdi Ghassemi, Vafa, Nasser Pourmohammadie, Asl, Mehdi Shahedi

“…Fully-dense Ti 3 SiC 2 –SiC composites were in-situ synthesized and sintered through a reactive hot-pressing process using TiC and Si powders with different…”
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Reactive hot pressing of ZrB2-based composites with changes in ZrO2/SiC ratio and sintering conditions. Part I: Densification behavior by Vafa, Nasser Pourmohammadie, Shahedi Asl, Mehdi, Jaberi Zamharir, Mehran, Ghassemi Kakroudi, Mahdi

“…ZrB2–SiC–ZrO2 composites were hot pressed in order to investigate the effects of adding nano-sized ZrO2 particles as well as the hot pressing parameters on the…”
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Significance of hot pressing parameters and reinforcement size on sinterability and mechanical properties of ZrB2–25vol% SiC UHTCs by Jaberi Zamharir, Mehran, Shahedi Asl, Mehdi, Ghassemi Kakroudi, Mahdi, Pourmohammadie Vafa, Nasser, Jaberi Zamharir, Mahsa

“…The influences of hot pressing parameters and SiC particle size on the bulk density, the average ZrB2 grain size and Vickers hardness of ZrB2–25vol% SiC…”
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Significance of hot pressing parameters and reinforcement size on densification behavior of ZrB2–25vol% SiC UHTCs by Jaberi Zamharir, Mehran, Shahedi Asl, Mehdi, Pourmohammadie Vafa, Nasser, Ghassemi Kakroudi, Mahdi

“…ZrB2–25vol% SiC ceramic composites were prepared by hot pressing in order to investigate the effects of processing parameters and SiC particle size (20nm,…”
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