Dynamic / thermochemical method: A novel approach in the synthesis of B4C powder

Boussebha, Hamza; Bakan, Sinan; Kurt, Ali Osman

doi:10.1016/j.oceram.2021.100133

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…In addition, the use of polymer precursors has received special attention from researchers in recent years due to their special advantages [16][17][18]. However, one of the biggest limitations of this approach is the residual amount of carbon left in the final powder produced by the synthesis with polymeric raw materials [18][19][20]. Krishnarao and Subrahmanyam [21] synthesized B 4 C ceramic via carbothermal reduction of B 2 O 3 with boric oxide and carbon black.…”

Section: Introductionmentioning

confidence: 99%

Comparison of residual carbon content and morphology of B4C powders synthesized under different conditions

Feiz,

Nikzad,

Majidian

et al. 2023

Synth. Sinter.

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In this article, the impact of different B4C synthesis methods on the amount of residual carbon and the final morphology of the prepared ceramic particles was investigated. The main materials for the synthesis of B4C were glucose and boric acid, and the effects of adding tartaric acid and performing mechanical activation were studied. For this purpose, two methods of carbon dissolution and boron carbide oxidation were used to determine the amount of residual carbon in the ceramic products. The results of the investigations on the sample synthesized in optimal conditions showed that if additives and mechanical activation are not used, about 7 wt% of carbon will remain in the synthesized powder. The amount of carbon decreased to 5.7 wt% with mechanical activation, but the best result was obtained with the addition of tartaric acid, in which the amount of impurity dropped to 3.3 wt%. Finally, the size and morphology of B4C particles and carbon impurities were observed and compared using a scanning electron microscope.

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Section: Introductionmentioning

confidence: 99%

Comparison of residual carbon content and morphology of B4C powders synthesized under different conditions

Feiz,

Nikzad,

Majidian

et al. 2023

Synth. Sinter.

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“…29,[36][37][38][39][40][41][42] DTM is a patented 43 modified carbothermal reduction, in which the synthesis takes place in a rotary kiln, allowing the reaction to take place in a relatively shorter time, offering fine powders that can be used in their as-synthesized form. 36 In the current study, with the aim of investigating the efficiency of the DTM system, AlN powders were synthesized from the reaction of Al(OH) 3 with C under flowing N 2 . In addition, the use of NH 3 and C 3 H 8 gas mixture instead of solid carbon and N 2 has been examined in the dynamic system then compared with the static gas mixture synthesis.…”

Section: Introductionmentioning

confidence: 99%

“…Dynamic/thermochemical method (DTM) is a novel approach that has been deemed effective in the synthesis of many technical ceramics such as TiN, ZrN, Si 3 N 4 , B 4 C, BN, and TiB 2 . 29,[36][37][38][39][40][41][42] DTM is a patented 43 modified carbothermal reduction, in which the synthesis takes place in a rotary kiln, allowing the reaction to take place in a relatively shorter time, offering fine powders that can be used in their as-synthesized form. 36 In the current study, with the aim of investigating the efficiency of the DTM system, AlN powders were synthesized from the reaction of Al(OH) 3 with C under flowing N 2 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of submicron AlN powder using dynamic/thermochemical method

Boussebha

Mutlu

Canikoğlu

et al. 2022

Int J Applied Ceramic Tech

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Carbothermal reduction and nitridation (CRN) method, used for the synthesis of nitride-based ceramic powders, is an effective and economic technique that has been widely investigated. In this study, a CRN-based novel approach, denominated as dynamic/thermochemical method (DTM), has been used to synthesize submicron high-purity aluminum nitride (AlN) powders with equiaxed-sized particles. DTM is a modified CRN method in which the reaction takes place in a controlled atmosphere using a rotary tube furnace, allowing the synthesis of fine particle-size powders in a relatively short time. Following the DTM process, homogeneous submicron AlN powders were synthesized from a mixture of aluminum hydroxide (Al(OH) 3 ) and carbon black at 1450 • C for 1.5 h. Furthermore, dynamic synthesis parameters, as well as the use of ammonia (NH 3 ) and propane (C 3 H 8 ) gas mixtures instead of carbon black and nitrogen, were investigated.

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“…Boron carbide (B 4 C) and silicon carbide (SiC) particles, which are the most preferred reinforcement materials for AMCs, strengthen the matrix structure and provide good wear resistance and high thermal stability [12]. B 4 C, which is called "black diamond", has a low density (2.52 g/cm 3 ), high hardness (29.1 GPa), high modulus of elasticity (470 GPa), and high melting point (2540°C) [14]. Because SiC has high hardness values, high resistance to rupture, a high modulus of elasticity, low density, and a low thermal expansion coefficient, its use as a reinforcement material is common [12].…”

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confidence: 99%

Production of AA2024-Matrix B4C-SiC- and B4C-Y2O3-Particle-Reinforced Composites by Powder Metallurgy and Investigation of Their Mechanical Properties

Doğan

MUTLU

2022

Celal Bayar Üniversitesi Fen Bilimleri Dergisi

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In this study, it was aimed to produce Al-matrix composite materials with B4C-SiC and B4C-Y2O3 particle reinforcement using the Powder Metallurgy (PM) method. In the composites in which the reinforcement materials were used at different particle sizes and ratios, AA2024 powders were selected as the matrix material. The powders were homogeneously mixed and compacted at room temperature under a pressure of 525 MPa. The raw specimens were sintered by keeping them at different temperatures for 45 minutes. The composite materials were subjected to wear tests, and their hardness and density values were investigated. In the study, the effects of reinforcement materials added to the matrix at different particle sizes and ratios on wear resistance, hardness, and density at different temperatures were examined.

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Dynamic / thermochemical method: A novel approach in the synthesis of B4C powder

Cited by 4 publications

References 14 publications

Comparison of residual carbon content and morphology of B4C powders synthesized under different conditions

Comparison of residual carbon content and morphology of B4C powders synthesized under different conditions

Synthesis of submicron AlN powder using dynamic/thermochemical method

Production of AA2024-Matrix B4C-SiC- and B4C-Y2O3-Particle-Reinforced Composites by Powder Metallurgy and Investigation of Their Mechanical Properties

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