A new direction in the creation of ceramic materials with a specified composition and structure. Part 1. Preparation of binders for ceramic production by the sol-gel method. 4. Structure and properties of transformation of gels in heat treatment; Creation of carbon clathrates in gel clusters

1999 ◽  
Vol 40 (7-8) ◽  
pp. 281-288
Author(s):  
G. D. Semchenko
Keyword(s):  
Heat Treatment ◽  
Sol Gel ◽  
Ceramic Materials ◽  
Ceramic Production ◽  
Structure And Properties ◽  
Gel Method ◽  
Sol Gel Method ◽  
Composition And Structure ◽  
The Creation

Al2O3 AND ZrO2 CERAMIC MATERIALS OBTAINED BY SOL-GEL METHOD

2021 ◽  
pp. 61-73
Author(s):  
Yu.E. Lebedeva ◽  
◽  
N.E. Shchegoleva ◽  
V.A. Voronov ◽  
St.S. Solntcev ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Zirconium Dioxide ◽  
Monoclinic Phase ◽  
Eutectic Composition ◽  
Sol Gel ◽  
Ceramic Materials ◽  
Gel Method ◽  
Sol Gel Method ◽  
Zro2 System ◽  
Sintered Materials

The rheological properties, processes of structure and phase formation of the Al2O3–ZrO2 system compositions obtained by the sol-gel method have been investigated. The temperature range of crystallization of the compositions is 900–1100 °C. With an increase in the concentration of zirconium dioxide in the system, the temperature of the transition from the tetragonal to the monoclinic phase decreases. The effect of the ratio of the components in the initial solutions and the temperature regime of heat treatment of gels on the physicochemical properties of nanopowders and sintered materials has been studied. Ceramic materials of eutectic composition give the highest density and lower values of porosity and water absorption.

The effect of heat treatment process on structure and properties of ZnO nano layer produced by sol–gel method

2010 ◽  
Vol 13 (4) ◽  
pp. 267-271 ◽  
Author(s):  
Seyyed Mohammad Hossein Hejazi ◽  
Fatemeh Majidi ◽  
Mohammad Pirhadi Tavandashti ◽  
Mohammad Ranjbar
Keyword(s):  
Heat Treatment ◽  
Treatment Process ◽  
Sol Gel ◽  
Heat Treatment Process ◽  
Structure And Properties ◽  
Gel Method ◽  
Sol Gel Method

Preparation of La0.75Sr0.25Cr0.5Mn0.5O3-δ Nanometer Powders by Sol-Gel Method and Research about its Electrochemical Performance

2013 ◽  
Vol 712-715 ◽  
pp. 257-261
Author(s):  
Yin Lin Wu ◽  
Qing Hui Wang ◽  
Ling Wang ◽  
Hai Yan Zhao
Keyword(s):  
Heat Treatment ◽  
Particle Size ◽  
Electrochemical Performance ◽  
Heat Treatment Temperature ◽  
Sol Gel ◽  
Treatment Temperature ◽  
Preparation Process ◽  
Gel Method ◽  
Sol Gel Method ◽  
Ft Ir

The La0.75Sr0.25Cr0.5Mn0.5O3-δnanometer powders were prepared by citric acid sol-gel method.The samples were characterized by DTA, FT-IR, XRD, TEM techniques. The preparation process, morphology of synthesized powders, the best heat-treatment temperature and the electrochemical performance had been studied. The results show that the spherical nanometer powders can be obtained and the best heat-treatment temperature is 800°C. The particle size is about 30nm and Ea is 0.071 eV.

Synthesis and characterization of macroporous europium-doped Ca12Al14O33 (C12A7:Eu3+) and its application in metal ion detection

2019 ◽  
Vol 43 (21) ◽  
pp. 8315-8324
Author(s):  
Hui Yang ◽  
Rui Wang ◽  
Yaozu Wang ◽  
Jianzhong Jiang ◽  
Xingzhong Guo
Keyword(s):  
Heat Treatment ◽  
Metal Ion ◽  
Sol Gel ◽  
Synthesis And Characterization ◽  
Practical Application ◽  
Ion Detection ◽  
Gel Method ◽  
Sol Gel Method ◽  
Metal Ion Detection

Macroporous europium-doped Ca12Al14O33 (C12A7:Eu3+) was prepared via a sol–gel method followed by heat-treatment, and the resultant macroporous C12A7:Eu3+ shows potential for practical application in metal ion detection and has a good response to Pb2+ ions.

Fabrication of Bi-2223 Powders Using Sol-Gel Method

2011 ◽  
Vol 412 ◽  
pp. 125-128 ◽  
Author(s):  
Ming Ya Li ◽  
Xiao Yan Wang ◽  
Cheng Li Ye ◽  
Feng Lin Xue
Keyword(s):  
Heat Treatment ◽  
Sol Gel ◽  
Chelating Agent ◽  
Experimental Results ◽  
Main Phase ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dwelling Time ◽  
Metal Nitrates ◽  
Gel Technique

The Bi-2223 powders were fabricated by the sol-gel technique. Metal nitrates were used as starting materials, and ethylenediamineteracetic acid was used as chelating agent. The solution was heated until it turns to gel. Then the organic was removed at a temperature of 240°C, and the nitrite was removed at 500°C. The powder was calcined at different temperature, varying the dwelling time. Experimental results show that the main phase of samples after heat treatment is Bi-2212 phase.

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