Mechanochemical synthesis of α-Al2O3-Cr3+ (Ruby) and χ-Al2O3

被引：5

作者：

Cortes-Vega, Fernando D. ^{[1
,2
]}

Yang, Wenli ^{[3
]}

Zarate-Medina, Juan ^{[2
]}

Brankovic, Stanko R. ^{[3
,4
]}

Calderon, Hector A. ^{[5
]}

Hernandez, Francisco C. Robles ^{[1
,3
,4
]}

机构：

[1] Univ Houston, Dept Mech Engn Technol, Houston, TX 77004 USA

[2] Univ Michoacana, Inst Invest Met & Mat, Morelia, Michoacan, Mexico

[3] Univ Houston, Dept Mat Sci & Engn, Houston, TX USA

[4] Univ Houston, Dept Elect & Comp Engn, Houston, TX USA

[5] Inst Politecn Nacl, ESFM, UPALM, Mexico City, DF, Mexico

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2019年 / 102卷 / 03期

关键词：

ALUMINA; SIZE; LINE;

D O I：

10.1111/jace.16171

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work we present a unique method to synthesize -Al2O3 and -Al2O3 doped with Cr3+ (ruby). The ruby is synthesized by mechanical milling of pseudoboehmite that is doped in-situ with chromium. The doping is carried by adding chromium sulfate hydrate to an aqueous solution rich in aluminum sulfate hydrate. The pH in the solution is controlled to be between 9 and 10 by using ammonia, which induces the pseudoboehmite precipitation. The Cr3+ is added for its remarkable effects on the detectability of ruby emitting luminescent R-1 and R-2 bands that are traceable in Raman spectroscopy. The formation of ruby is detected at milling times as short as 5hours and increased with the milling time. Ruby phase is further confirmed by means of true atomic resolution Transmission Electron Microscopy (TEM).

引用

页码：976 / 980

页数：5

共 22 条

[1] PERFECTION OF RUBY LASER CRYSTALS [J].

BIRKS, LS ;

HURLEY, JW ;

SWEENEY, WE .

JOURNAL OF APPLIED PHYSICS, 1965, 36 (11) :3562-&

[2]

Bulyarskii SV, 2000, PHYS STATUS SOLIDI A, V180, P555, DOI 10.1002/1521-396X(200008)180:2<555::AID-PSSA555>3.0.CO

[3]

2-D

[4]

Chang S, 2004, INT J APPL CERAM TEC, V1, P172

[5] Room-temperature synthesis of χ-Al2O3 and ruby (α-Cr:Al2O3) [J].

Cortes-Vega, Fernando D. ;

Yang, Wenli ;

Zarate-Medina, J. ;

Brankovic, Stanko R. ;

Herrera Ramirez, Jose M. ;

Hernandez, Francisco C. Robles .

CRYSTENGCOMM, 2018, 20 (25) :3505-3511

[6] Nano-Ruby: A Promising Fluorescent Probe for Background-Free Cellular Imaging [J].

Edmonds, Andrew M. ;

Sobhan, Mushtaq A. ;

Sreenivasan, Varun K. A. ;

Grebenik, Ekaterina A. ;

Rabeau, James R. ;

Goldys, Ewa M. ;

Zvyagin, Andrei V. .

PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION, 2013, 30 (06) :506-513

[7] Multi-functional fullerene soot/alumina composites with improved toughness and electrical conductivity [J].

Fals, Andres E. ;

Hadjiev, Viktor G. ;

Hernandez, Francisco C. Robles .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 558 :13-20

[8] EXPERIMENTAL RESULTS ON LIGHT SCATTERING BY A THETA-PINCH PLASMA USING A RUBY LASER [J].

FUNFER, E ;

KRONAST, B ;

KUNZE, HJ .

PHYSICS LETTERS, 1963, 5 (02) :125-127

[9] LIFETIME OF THE RUBY R1 LINE UNDER ULTRAHIGH PRESSURE [J].

JOVANIC, BR .

CHEMICAL PHYSICS LETTERS, 1992, 190 (05) :440-442

[10] Mechanically induced formation of metastable χ- and κ-Al2O3 from boehmite [J].

Kozawa, Takahiro ;

Naito, Makio .

ADVANCED POWDER TECHNOLOGY, 2016, 27 (03) :935-939

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