Phase Transformations and Mass Transport in Mechanically Activated Low-Temperature Forms of Alumina | Sciact - CRIS-system of Boreskov Institute of Catalysis

Phase Transformations and Mass Transport in Mechanically Activated Low-Temperature Forms of Alumina Full article

Journal

Inorganic Materials
ISSN: 0020-1685 , E-ISSN: 1608-3172

Output data

Year: 1999, Volume: 35, Number: 3, Pages: 262-269 Pages count : 8

Tags

GAMMA-ALUMINA; BOEHMITE

Authors

Kirichenko O.A. ¹ , Ushakov V.A. ² , Andryushkova O.A. ³ , Ivchenko S.V. ⁴ , Poluboyarov V.A. ¹

Affiliations

1	Institute of Solid-State Chemistry and Mineral Processing, Siberian Division, Russian Academy of Sciences, Novosibirsk 630128, ul. Kutateladze 18, Russian Federation
2	Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, Novosibirsk 630090, pr. akademika Lavrent'eva 5, Russian Federation
3	Novosibirsk Medical Institute, Novosibirsk, Russian Federation
4	Novosibirsk State University, Novosibirsk 630090, ul. Pirogova 2, Russian Federation

Polymorphic transformations and mass transport in mechanically activated gamma- and chi-Al2O3 were studied by x-ray diffraction analysis, dilatometry, and BET measurements. Mechanical processing of active alumina was found to reduce the temperature of corundum formation and intensify mass transport, as evidenced by the observed increase in the effective diffusion coefficient with mechanical-activation time and specific power. As a result of the fast mass transport at relatively low temperatures, the specific surface decreases notably before alpha-Al2O3 begins to form.

Kirichenko O.A. , Ushakov V.A. , Andryushkova O.A. , Ivchenko S.V. , Poluboyarov V.A.
Phase Transformations and Mass Transport in Mechanically Activated Low-Temperature Forms of Alumina
Inorganic Materials. 1999. V.35. N3. P.262-269. WOS Scopus РИНЦ ANCAN

Кириченко О.А. , Ушаков В.А. , Андрюшкова О.А. , Ивченко С.В. , Полубояров В.А.
Фазовые превращения и массоперенос в механически активированных низкотемпературных оксидах алюминия
Неорганические материалы. 1999. Т.35. №3. С.333-341. РИНЦ

Submitted:	May 14, 1997
Published print:	Mar 1, 1999

Web of science:	WOS:000079119100015
Scopus:	2-s2.0-27544488774
Elibrary:	13325282
Chemical Abstracts:	1999:193098
Chemical Abstracts (print):	130:304229

DB	Citing
Web of science	1
Scopus	2
Elibrary	4