NDLI: Effect of raw materials on carbothermal reduction synthesis of γ-aluminum oxynitride spinel powder

Content Provider	Springer Nature Link
Author	Yawei, Li Nan, Li Runzhang, Yuan
Copyright Year	1999
Abstract	The effect of starting Al$_{2}$O$_{3}$ materials on synthesis of γ-aluminum oxynitride spinel (γ-AlON) powder by carbothermal reduction has been investigated. Whether using Al(OH)$_{3}$, boehmite, dried gel, or calcined alumina as an alumina source, the reaction rate is faster than that using α-Al$_{2}$O$_{3}$. That is because the oxygen distribution in γ-Al$_{2}$O$_{3}$ is cubic close packed as the non-metal arrangement in AlON spinel is whereas that in α-Al$_{2}$O$_{3}$ is hexagonal close packed. When hydrated aluminas used lose structural water and transform into γ-Al$_{2}$O$_{3}$ in heating cycle, γ-Al$_{2}$O$_{3}$ is easily reduced and nitrided into AlON spinel after a slight adjustment in the cation positions and proportions is made in the reduction process of alumina. The particle morphology of the product after carbothermal reduction was strongly influenced by the type of alumina source employed, which suggests the mechanism of Al$_{2}$O$_{3}$/C powder mixtures in a flowing N$_{2}$ stream is the absorption of aluminum-containing gas, such as Al(g), Al$_{2}$O(g), etc., on the surface of aluminum oxide in the initial stages, followed by reaction with N$_{2}$ gas to form AlON and AlN phases with nucleation, and growth on Al$_{2}$O$_{3}$ particle surfaces.
Starting Page	2547
Ending Page	2552
Page Count	6
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	34
Issue Number	11
e-ISSN	15734803
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1999-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polymer Sciences Industrial Chemistry/Chemical Engineering Characterization and Evaluation Materials Mechanics
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Synthesis of aluminum nitride fibres from aluminum silicate fibres by carbothermal reduction method

The formation and stability of γ-aluminium oxynitride spinel in the carbothermal reduction and reaction sintering processes

Carbothermal reduction synthesis of nanocrystalline zirconium carbide and hafnium carbide powders using solution-derived precursors

Sinterability of β-SiAlON powder prepared by carbothermal reduction and simultaneous nitridation of ultrafine powder in the Al2O3-SiO2 system

Carbothermal synthesis of titanium carbide using ultrafine titania powders

Production of Si3N4 by carbothermal reduction and nitridation of sepiolite

Effect of process parameters on synthesis of aluminum nitride powder prepared by chemical vapor deposition

Chemical synthesis of the high-pressure cubic-spinel phase of ZnIn2S4

Mechanochemical synthesis and sintering behaviour of magnesium aluminate spinel

Effect of raw materials on carbothermal reduction synthesis of γ-aluminum oxynitride spinel powder

Similar Documents

Synthesis of aluminum nitride fibres from aluminum silicate fibres by carbothermal reduction method

The formation and stability of γ-aluminium oxynitride spinel in the carbothermal reduction and reaction sintering processes

Carbothermal reduction synthesis of nanocrystalline zirconium carbide and hafnium carbide powders using solution-derived precursors

Sinterability of β-SiAlON powder prepared by carbothermal reduction and simultaneous nitridation of ultrafine powder in the Al2O3-SiO2 system

Carbothermal synthesis of titanium carbide using ultrafine titania powders

Production of Si3N4 by carbothermal reduction and nitridation of sepiolite

Effect of process parameters on synthesis of aluminum nitride powder prepared by chemical vapor deposition

Chemical synthesis of the high-pressure cubic-spinel phase of ZnIn2S4

Mechanochemical synthesis and sintering behaviour of magnesium aluminate spinel

Effect of raw materials on carbothermal reduction synthesis of γ-aluminum oxynitride spinel powder