The Effect of Ti Addition on the Properties of Al-B&lt;sub&gt;4&lt;/sub&gt;C Interface: A Microstructural Study

Toptan, Fatih; Kılıçarslan, Ayfer; Kerti, Işıl

doi:10.4028/www.scientific.net/msf.636-637.192

Cited by 57 publications

(23 citation statements)

References 20 publications

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“…Prior to the sintering process, samples were firstly mixed with different Al powder and then pelleted and dehydrated. This process has fully utilized the ultra‐fine particle size of the boron carbide waste particle, the low melting point (660°C) of alumina, the nice wettability between Al and B 4 C and the low‐temperature sintering strengthening mechanism to prepare good‐quality B 4 C/Al composite ceramic. In this paper, the effects of the pelletizing factors including the binder hydroxypropyl methylcellulose addition, pelleting pressure, Al addition, sintering temperature and the sintering time on the performances of the pellets and the sintering conditions on the properties of the ceramics have been investigated and optimized.…”

Section: Introductionmentioning

confidence: 99%

An economic and environment friendly way of recycling boron carbide waste to prepare B₄C/Al composite ceramic

Gao

Dong

et al. 2018

Int J Applied Ceramic Tech

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Recently, with the rapid growth of sapphire wafer applications, boron carbide as abrasive, has shown an increasing demand. Great amounts of boron carbide waste (low purity and small grain size with D50 ≈ 1 μm) are therefore produced during the production of boron carbide abrasives and barely recovered and utilized. This paper is aimed at developing an economic and environment friendly process to recycle the boron carbide waste through adding a certain amount of Al powder to prepare B4C/Al composite ceramic. Prior to the sintering process, samples were firstly mixed with different Al powder and then pelleted and dehydrated. The effects of the pelletizing factors on performances of the pellets and the ceramics were optimized as binder hydroxypropyl methylcellulose addition 0.4%, pelleting pressure 30 MPa, Al addition 9 wt%, sintering time 90 minutes. Under these conditions, the apparent porosity, bulk density, compressive strength and flexural strength of the sintered B4C/Al are 19.08%, 1.84 g/cm3, 246.88 MPa and 71.10 MPa respectively. Al addition can not only attribute to the low‐temperature liquid sintering and densification of the product, but also generation of some stable phases including AlB12, AlB12C2 and Al3BC, which in turn increase the performance of the ceramic composite.

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Section: Introductionmentioning

confidence: 99%

An economic and environment friendly way of recycling boron carbide waste to prepare B₄C/Al composite ceramic

Gao

Dong

et al. 2018

Int J Applied Ceramic Tech

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“…Al-B 4 C composites can be processed with low-cost casting routes [3,[15][16][17][18]. However, in the literature, particle volume fraction values are generally below 15% in cast Al-B 4 C composites [15][16][17][18][19][20][21][22][23][24][25][26][27]. Relatively higher nominal B 4 C volume fractions are used in some works [4,8], however, within this works, there is no information about particle addition yields or actual volume fraction values.…”

Section: Introductionmentioning

confidence: 99%

Reciprocal dry sliding wear behaviour of B4Cp reinforced aluminium alloy matrix composites

Toptan

Kerti

Rocha

2012

Wear

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In the present work, AlSi9Cu3Mg alloy matrix composites reinforced with 15 and 19% (vol.) B 4 C p were produced by squeeze casting route at 850 °C under low vacuum. Titaniumcontaining flux (K 2 TiF 6) was used to promote the wetting between B 4 C and liquid aluminium metal. It was found, from the microstructural observations, that the wetting improved by the formation of a thin Ti-rich reaction layer. In order to investigate the wear properties, the samples were subjected to reciprocating wear tests against AISI 4140 pin under dry sliding conditions. Effect of B 4 C volume fraction, sliding velocity, applied load and sliding distance on reciprocal dry wear behaviour of composites was studied using general full factorial experimental design. Effects of factors and interactions on the coefficient of friction (COF) and the wear rate values of both composite specimens and counter materials were studied. Worn surfaces and wear debris were characterised using field emission gun scanning electron microscope (FEG-SEM), Energy Dispersive X-Ray Spectroscopy (EDS), optical microscope (OM) and X-Ray diffraction (XRD). From microstructural investigations, wear mechanism suggested as a combination of adhesive, abrasive, and delamination wear.

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“…The usage of Aluminum reinforced with Boron Carbide composite become especially perspective in protection from neutron radiation application due to its ability corresponding author; e-mail: akkasayhan@hotmail.com to absorb neutrons very well. This composite is used as shielding materials to absorb free neutrons coming from the reaction in the nuclear reactor and to avoid any radiation escape to the surrounding environment [6]. Boron Carbide is a material with higher hardness than aluminum with the reading of 2.75 Mohs compared to 9.3 Mohs.…”

Section: Introductionmentioning

confidence: 99%

Radiation Shielding Effect of Boron Carbide Aluminum Metal Matrix Composite

et al. 2015

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Boralyn (Al/B4C) composite material is produced chiey of boron carbide and aluminum. Boron Carbide is an important material for the nuclear industry due to high neutron absorption cross-section. This composite is used as shielding materials to absorb neutrons in the nuclear reactors and control road materials. In this study we investigated Al/B4C composites against gamma radiation. For that purpose, 5 wt.%, 10 wt.%, 15 wt.% and 20 wt.% reinforcement content were investigated. Cs-137 gamma radioisotope source which has 662 keV gamma energy photons were used. For each material, linear and mass attenuation coecients were calculated. Theoretical mass attenuation coecients were calculated from XCOM computer code. The theoretical results were compared with experimental results. The results were showed that increasing the amount of Boron Carbide compound content of boralyn composite material decrease the linear and mass attenuation coecient of materials

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The Effect of Ti Addition on the Properties of Al-B<sub>4</sub>C Interface: A Microstructural Study

Cited by 57 publications

References 20 publications

An economic and environment friendly way of recycling boron carbide waste to prepare B₄C/Al composite ceramic

An economic and environment friendly way of recycling boron carbide waste to prepare B₄C/Al composite ceramic

Reciprocal dry sliding wear behaviour of B4Cp reinforced aluminium alloy matrix composites

Radiation Shielding Effect of Boron Carbide Aluminum Metal Matrix Composite

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The Effect of Ti Addition on the Properties of Al-B<sub>4</sub>C Interface: A Microstructural Study

Cited by 57 publications

References 20 publications

An economic and environment friendly way of recycling boron carbide waste to prepare B4C/Al composite ceramic

An economic and environment friendly way of recycling boron carbide waste to prepare B4C/Al composite ceramic

Reciprocal dry sliding wear behaviour of B4Cp reinforced aluminium alloy matrix composites

Radiation Shielding Effect of Boron Carbide Aluminum Metal Matrix Composite

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An economic and environment friendly way of recycling boron carbide waste to prepare B₄C/Al composite ceramic

An economic and environment friendly way of recycling boron carbide waste to prepare B₄C/Al composite ceramic