The spray forming of nanostructured Aluminum Oxide

Agarwal, Arvind; Mckechnie, Timothy N.; Seal, Sudipta

doi:10.1007/bf02709093

Cited by 12 publications

(6 citation statements)

References 9 publications

(14 reference statements)

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“…Net shape and freestanding Al 2 O 3 is fabricated. 97,98 Near net shape bulk MoSi 2 -Si 3 N 4 -SiC nanocomposite has also been consolidated using plasma spray forming. 99 One of the advantages of plasma spray forming is the ability to sinter a part while forming it.…”

Section: Plasma Spray Formingmentioning

confidence: 99%

Sintering of nanoceramics

2008

International Materials Reviews

148

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There are two challenges in nanoceramic sintering: fully densifying the sintered body and maintaining the sintered grains at ,100 nm size. This review examines the fundamental factors underlying nanoceramic sintering and the approaches to effectively utilise the sintering factors to advantage. Nanoceramic sintering techniques are divided into four categories: pressureless sintering, pressure sintering, electrically assisted sintering, and other sintering related techniques. Pressureless sintering has mainly evolved around modifying sintering schedules, improving nanoparticle packing characteristics, and using additives to tailor the diffusion rates. Pressure sintering, which includes hot pressing, hot isostatic pressing, and sinter forging, can effectively achieve full densification for nanostructured ceramics but microstructural inhomogeneity and sintered shape limitation are difficult to overcome. For electrically assisted sintering, many nanoceramics have been sintered to full density with spark plasma even though the atomic diffusion process is not well understood; microwave sintering can achieve fast heating but has limited ability in reaching full density or controlling grain growth. Plasma spray forming and dynamic compaction are drastically different from the mainstream sintering concepts and so are briefly reviewed. Finally, the remaining issues in nanoceramic sintering are summarised and the future directions are projected.

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Section: Plasma Spray Formingmentioning

confidence: 99%

Sintering of nanoceramics

2008

International Materials Reviews

148

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“…• The current challenge of removing alumina coating efficiently still exists as alumina (Al2O3) the passivation layer is difficult to surpass; this is a boon and a bane for the industries. Alumina helps Aluminum to be able to resist corrosion even in extreme environments if taken in ideal conditions (Agarwal et al, 2002;Raja and Raja, 2014;Garg et al, 2019). And alumina is a bane for a fundamental reason, as we know that alumina has a higher temperature than pure Aluminum.…”

Section: Discussionmentioning

confidence: 99%

Contemporary Progresses in Ultrasonic Welding of Aluminum Metal Matrix Composites

et al. 2021

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“…The spray event occurs below the melting point of the spray materials, so less microstructural change and less oxidation should occur (Li et al , 2005). Numerous metallic coatings have been deposited by these methods (Agarwal et al , 2002;Burkle et al , 2002;Dent et al , 2001;Edris et al , 1997;Guilemany et al , 1995;He et al , 2000;Lau et al , 1999).…”

Section: Materials and Fabrication Of Tunable Amorphous Metallic Coatmentioning

confidence: 97%