Effects of Molar Ratio of Acetylacetone to Aluminum Precursor on the Yttrium Aluminum Garnet (Y3Al5O12, YAG) Formation by a Sol-Gel Process

2014 ◽  
Vol 12 ◽  
pp. E53-E58 ◽  
Author(s):  
Yung-Shou Ho ◽  
Cheng-Heng Wu ◽  
Yi-Siou Chen ◽  
Chih-Kun Liu
Keyword(s):  
Yttrium Aluminum Garnet ◽  
Sol Gel ◽  
Molar Ratio ◽  
Sol Gel Process ◽  
Yttrium Aluminum ◽  
Aluminum Precursor

Production of nanodisperse particles of doped yttrium-aluminum garnet by a sol-gel process

2011 ◽  
Vol 84 (9) ◽  
pp. 1502-1505
Author(s):  
E. N. Poddenezhnyi ◽  
A. A. Boiko ◽  
A. O. Dobrodei ◽  
E. I. Grishkova ◽  
A. V. Zdravkov ◽  
...  
Keyword(s):  
Yttrium Aluminum Garnet ◽  
Sol Gel ◽  
Sol Gel Process ◽  
Yttrium Aluminum ◽  
Nanodisperse Particles

Waveguiding terbium-doped yttrium aluminum garnet coatings based on the sol–gel process

2009 ◽  
Vol 517 (16) ◽  
pp. 4610-4614 ◽  
Author(s):  
A. Potdevin ◽  
S. Lechevallier ◽  
G. Chadeyron ◽  
N. Caperaa ◽  
D. Boyer ◽  
...  
Keyword(s):  
Yttrium Aluminum Garnet ◽  
Sol Gel ◽  
Sol Gel Process ◽  
Yttrium Aluminum

Interpretation of Alumina/Yttrium-Aluminum Garnet Orientation Relationships by Geometric Criteria

1990 ◽  
Vol 209 ◽  
Author(s):  
R.S. Hay ◽  
L.E. Matson
Keyword(s):  
Structural Unit ◽  
Yttrium Aluminum Garnet ◽  
Sol Gel ◽  
Interface Energy ◽  
Interface Structure ◽  
Invariant Line ◽  
Directionally Solidified ◽  
Orientation Relationships ◽  
Yttrium Aluminum

ABSTRACTGeometric criteria for low interface energy and interface structure were tested for the cubic-rhombohedral system YAG/alumina. Orientation relationships near (111){110}a // (112){110}y and facets on (111)a(112)y were observed in both sol-gel derived composites and directionally solidified eutectic composites. The ΣYAG=12 near-CSL of 2{111}, {110}, {112} was inferred to be the preferred structural unit. Dislocations with b=1/3{111}a and b=1/2{110}a were observed and inferred to accomodate deviation from the structural unit, respectively. The {110}a,y direction met some of the criteria for an invariant line. Although the OR was explained by geometric criteria it would have been difficult to predict it with such criteria

scholarly journals Interlayer-free Glucose Carbonised Template Silica Membranes for Brine Water Desalination

2019 ◽  
Vol 280 ◽  
pp. 03010 ◽  
Author(s):  
Dwi Rasy Mujiyanti ◽  
Muthia Elma ◽  
Mufidah Amalia
Keyword(s):  
Sol Gel ◽  
Tetraethyl Orthosilicate ◽  
Water Desalination ◽  
Molar Ratio ◽  
Solution Temperature ◽  
Nacl Solution ◽  
Silica Membranes ◽  
Salt Ions ◽  
Sol Gel Process ◽  
Free Glucose

Interlayer-free glucose carbonized template silica membranesbased on tetraethyl orthosilicate (TEOS) and glucose were successfullyprepared using an acid-base catalysed sol-gel method for artificial brinewater desalination (7.5% wt NaCl solution %) at temperatures range from25, 40 and 60 °C. These membranes calcined at 250 and 400 °C. Themembranes were fabricated through sol-gel process by using TEOS(tetraethyl orthosilicate); ethanol; nitric acid; ammonia; aquadest andglucose as a template. By molar ratio is 1: 38: 0.0007: 0.0003: 5 and0.25%; 0.5%, 1% w/v glucose as template. The results show the highestwater fluxes of 1.8, 2.2 and 4.8 kg m−2 h−1 for 25, 40 and 60 °Cdesalination process with excellent salt rejections of 99.5, 99.5 and 99.7%, respectively. It was found that the higher the NaCl solution temperature asfeed solution as well as glucose concentration (0.25% to 1% wt) astemplate attached in the silica matrixes, the higher water fluxes eventhough the salt rejection remain the same. This study demonstrates that theorganosilica membranes offered the carbonized silica mesostructuremembranes with excellent separation of water from the hydrated salt ions, particularly for processing brine salt solutions.

Preparation and grain-growth of chromia-yttrium aluminum garnet composites fibers by sol–gel method

2017 ◽  
Vol 83 (2) ◽  
pp. 275-280 ◽  
Author(s):  
Xiaoling Ma ◽  
Zhenlin Lv ◽  
Hongbin Tan ◽  
Jiao Nan ◽  
Caixia Wang ◽  
...  
Keyword(s):  
Grain Growth ◽  
Yttrium Aluminum Garnet ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Yttrium Aluminum

Study on Preparation and Hydrophobicity of MTES Derived Silica Sol and Gel

2012 ◽  
Vol 535-537 ◽  
pp. 2563-2566 ◽  
Author(s):  
Yu Ma ◽  
Hye Ryeon Lee ◽  
Toshinori Tsuru
Keyword(s):  
Reaction Rate ◽  
Sol Gel ◽  
Phase Segregation ◽  
Silica Sol ◽  
Molar Ratio ◽  
Modified Silica ◽  
Sol Gel Process ◽  
One Step ◽  
Inorganic Precursors

The synthesis of hydrophobic sol by one-step sol-gel process ammonia catalyzed was investigated. The water molar ratio and catalyst molar ratio were discussed to prevent phase segregation during the hydrolysis and co-condensation of the organic and inorganic precursors. The reactant system with water molar ratio 70 could make the reaction rate of MTES slightly less than that of TEOS, so that the hydrolysis - condensation – gelling reaction with MTES and TEOS as co-precursors could be synchronously. With the increase of the MTES/TEOS molar ratio, the reaction rate of the silica sol preparation decreased, the hydrophobicity of the sol and gel increased as the molar ratio MTES/TEOS change from 0.5~4. But the hydrophobicity of the methyl-modified silica sol and gel prepared with pure MTES in the sol-gel process were slightly lower than that of the methyl-modified silica sol and gel prepared with MTES and TEOS as co-precursors.

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