Determination of interfacial properties between AlN and aluminum beneath salt at high temperature

Mutale, Christian T.; Weirauch, Douglas A.; Cramb, A. W.

doi:10.1016/j.msea.2007.10.106

Cited by 2 publications

(3 citation statements)

References 23 publications

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“…[23][24][25][26][27][28] It was reported that the optimum contact angle for the stabilization of foaming ranges from 70 to 86 deg. [24,26] According to previous studies, the contact angle between AlN particles and Al melt is larger than 120 deg in the temperature range from 1023 to 1073 K, [29,30] which is close to the foaming temperature in the present melt foaming method. This implies that the wettability of AlN particles is worse around the foaming temperature in the present melt foaming method.…”

Section: A Effect Of Aln Particles On Foaming Behaviorsupporting

confidence: 55%

Fabrication of Al-3.7 Pct Si-0.18 Pct Mg Foam Strengthened by AlN Particle Dispersion and its Compressive Properties

Song

Tane

Ide

et al. 2010

Metall Mater Trans A

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YEONG HWAN SONG, MASAKAZU TANE, TAKUYA IDE, YOSHIHIRO SEIMIYA, BO YOUNG HUR, and HIDEO NAKAJIMA Al-3.7 pct Si-0.18 pct Mg foams strengthened by AlN particle dispersion were prepared by a melt foaming method, and the effect of foaming temperature on the foaming behavior was investigated. Al-3.7 pct Si-0.18 pct Mg alloy containing AlN particles was prepared by noncompressive infiltration of Al powder compacts with molten Al alloy in nitrogen atmosphere, and it was foamed at different foaming temperatures ranging from 1023 to 1173 K. The porosity of prepared foam decreases and the pore structure becomes homogeneous with increasing foaming temperature. When the foaming temperature is higher than 1123 K, homogeneous pores are formed in the prepared ingot without using oxide particles and metallic calcium granules, which are usually used for stabilizing a foaming process. This stabilization of the foaming at high temperatures is possibly caused by Al 3 Ti intermetallic compounds formed at high temperature and AlN particles. Compression tests for the prepared foams revealed that the absorbed energy per unit mass of prepared Al-3.7 pct Si-0.18 pct Mg foam is higher than those of aluminum foams strengthened by alloying or dispersion of reinforcements. It is remarkable that the oscillation in stress, which usually appears in strengthened aluminum foams, does not appear in the plateau stress region of the present Al-3.7 pct Si-0.18 pct Mg foam. The homogeneity in cell walls and pore morphology due to the stabilization of pore formation and growth by AlN and Al 3 Ti particles is a possible cause of this smooth plateau stress region.

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Section: A Effect Of Aln Particles On Foaming Behaviorsupporting

confidence: 55%

Fabrication of Al-3.7 Pct Si-0.18 Pct Mg Foam Strengthened by AlN Particle Dispersion and its Compressive Properties

Song

Tane

Ide

et al. 2010

Metall Mater Trans A

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“…The measured water contact angle on PVD-deposited AlN by [74] was 119° which shows hydrophobic properties of their coatings. Furthermore, it has been observed that the contact angle between molten Al and AlN surface is 136° at 850 °C, which confirms the non-wettability of AlN by Al [55].…”

Section: Roughness and Thickness Measurementsmentioning

confidence: 74%

“…Ceramics such as AlN are considered as suitable electrolysis cell material because of their non-wettability and non-reactivity towards molten Al or its salts [55]. Some of these ceramics have been synthesized as coatings using solution precursor plasma spray (SPPS) technology, with the authors investigating the effect of different direct current (DC) plasma parameters such as standoff distance, torch power, number of torch-passes, types of solvents and plasma velocity on the superhydrophibicity properties of the final coating [56].…”

Section: Non-wetting Propertiesmentioning

confidence: 99%

Synthesis of Cubic Aluminum Nitride (AlN) Coatings through Suspension Plasma Spray (SPS) Technology

2021

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Thermal spraying of aluminum nitride (AlN) is a challenging issue because it decomposes at a high temperature. In this work, the use of suspension plasma spray (SPS) technology is proposed for the in situ synthesis and deposition of cubic-structured AlN coatings on metallic substrates. The effects of the nitriding agent, the suspension liquid carrier, the substrate materials and the standoff distance during deposition by SPS were investigated. The plasma-synthesized coatings were analyzed by X-ray diffraction (XRD), optical microscopy (OM) and scanning electron microscopy (SEM). The results show higher AlN content in the coatings deposited on a carbon steel substrate (~82%) when compared to titanium substrate (~30%) or molybdenum (~15%). Melamine mixed with pure aluminum powder produced AlN-richer coatings of up to 82% when compared to urea mixed with the Al (~25% AlN). Hexadecane was a relatively better liquid carrier than the oxygen-rich liquid carriers such as ethanol or ethylene glycol. When the materials were exposed to a molten aluminum–magnesium alloy at 850 °C for 2 h, the corrosion resistance of the AlN-coated carbon steel substrate showed improved performance in comparison to the uncoated substrate.

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Determination of interfacial properties between AlN and aluminum beneath salt at high temperature

Cited by 2 publications

References 23 publications

Fabrication of Al-3.7 Pct Si-0.18 Pct Mg Foam Strengthened by AlN Particle Dispersion and its Compressive Properties

Fabrication of Al-3.7 Pct Si-0.18 Pct Mg Foam Strengthened by AlN Particle Dispersion and its Compressive Properties

Synthesis of Cubic Aluminum Nitride (AlN) Coatings through Suspension Plasma Spray (SPS) Technology

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