Thermal and chemical properties of TiO2-SiO2 porous glass-ceramics

Toshinori Kokubu; Masayuki Yamane

doi:10.1007/bf01082148

Eco-Compatible Construction Materials Containing Ceramic Sludge and Packaging Glass Cullet

Applied Sciences ◽

10.3390/app11083545 ◽

2021 ◽

Vol 11 (8) ◽

pp. 3545

Author(s):

Fernanda Andreola ◽

Isabella Lancellotti ◽

Paolo Pozzi ◽

Luisa Barbieri

Keyword(s):

Raw Materials ◽

Construction Materials ◽

Treatment Plant ◽

Glass Ceramics ◽

Chemical Properties ◽

Linear Shrinkage ◽

Glass Cullet ◽

Commercial Glass ◽

Packaging Glass ◽

And Chemical Properties

This research reports results of eco-compatible building material obtained without natural raw materials. A mixture of sludge from a ceramic wastewater treatment plant and glass cullet from the urban collection was used to obtain high sintered products suitable to be used as covering floor/wall tiles in buildings. The fired samples were tested by water absorption, linear shrinkage, apparent density, and mechanical and chemical properties. Satisfactory results were achieved from densification properties and SEM/XRD analyses showed a compact polycrystalline microstructure with albite and wollastonite embedded in the glassy phase, similar to other commercial glass-ceramics. Besides, the products were obtained with a reduction of 200 °C with respect to the firing temperatures of commercial ones. Additionally, the realized materials were undergone to leaching test following Italian regulation to evaluate the mobility of hazardous ions present into the sludge. The data obtained verified that after thermal treatment the heavy metals were immobilized into the ceramic matrix without further environmental impact for the product use. The results of the research confirm that this valorization of matter using only residues produces glass ceramics high sintered suitable to be used as tile with technological properties similar or higher than commercial ones.

Effect of ZnO content on the physical, mechanical and chemical properties of glass-ceramics in the CaO–SiO2–Al2O3 system

Ceramics International ◽

10.1016/j.ceramint.2019.10.154 ◽

2020 ◽

Vol 46 (4) ◽

pp. 4322-4328 ◽

Cited By ~ 6

Author(s):

Estefanía Montoya-Quesada ◽

Mónica A. Villaquirán-Caicedo ◽

Ruby Mejía de Gutiérrez ◽

J. Muñoz-Saldaña

Keyword(s):

Glass Ceramics ◽

Chemical Properties ◽

And Chemical Properties

The Ceramist as Chemist - Opportunities for New Materials

MRS Proceedings ◽

10.1557/proc-32-59 ◽

1984 ◽

Vol 32 ◽

Cited By ~ 12

Author(s):

D. R. Uhlmann ◽

B.J.J. Zelinski ◽

G.E. Wnek

Keyword(s):

Wide Spectrum ◽

High Surface ◽

Sol Gel ◽

High Surface Area ◽

Glass Ceramics ◽

Chemical Properties ◽

Ceramic Materials ◽

Process Technology ◽

Chemical Homogeneity ◽

And Chemical Properties

ABSTRACTThe use of sol-gel techniques to prepare glasses and crystalline ceramics offers outstanding opportunity for breakthroughs in technology. The areas of particular promise include novel glasses; crystallineceramics with exceptional microstructures; coatings for modification of electrical, optical, mechanical and chemical properties; porous media with high surface area and tailored chemistry; ceramic powders with high chemical homogeneity and narrow distributions of particle size; matrix materials in ceramicceramic composites; and a wide spectrum of specialty ceramic materials, ranging from abrasives and fibers to glass ceramics and films. Opportunities in each of these areas will be discussed and related to the advances in understanding and process technology required for their achievement. The theses will be advanced that creative chemistry provides the key to many of these advances, that ceramists simply MUST learn more chemistry, but that we dare not rest from our labors when the chemistry is done.

Glass-Ceramics Obtained from Sewage Sludge and its Characteristics Affected by Alkalinity

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.937.70 ◽

2014 ◽

Vol 937 ◽

pp. 70-73

Author(s):

Di Wu ◽

Jun Zhang ◽

Xing Wang Wen ◽

Hui Ling Liu

Keyword(s):

Sewage Sludge ◽

Raw Materials ◽

Glass Ceramics ◽

Chemical Properties ◽

X Ray Diffraction ◽

Scanning Calorimetry ◽

X Ray ◽

Sludge Disposal ◽

Physical And Chemical ◽

And Chemical Properties

Sewage sludge was tested as component for producing glass-ceramics with the addition of analytic reagent CaO to solve the sewage sludge disposal problems. The effect of alkalinity (Ak=mCaO/mSiO2) on the characteristics of the glass-ceramics was investigated. Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) were used to investigate thermal behavior and crystalline phase of the samples. It was found that the degree and characteristics of crystals in vitrified sludge significantly correlate to the alkalinity of the raw materials. The glass-ceramics with Ak = 0.36 possessed the best physical and chemical properties.

Mechanical and Chemical Properties of Zr and P-Doped Lithium Disilicate Glass Ceramics in Dental Restorations

International Journal of Applied Ceramic Technology ◽

10.1111/j.1744-7402.2011.02661.x ◽

2011 ◽

Vol 9 (3) ◽

pp. 497-506 ◽

Cited By ~ 10

Author(s):

Zahra Khalkhali ◽

Bijan Eftekhari yekta ◽

Vahak K. Marghussian

Keyword(s):

Glass Ceramics ◽

Chemical Properties ◽

Lithium Disilicate ◽

Dental Restorations ◽

And Chemical Properties

Synthesis and Characterization of Synthetic F-Mica Containing Glass-Ceramics in the System SiO2·Al2O3·B2O3·CaO·MgO·Li2O·(K,Na)2O·F

Journal of Materials Research ◽

10.1557/jmr.2004.0160 ◽

2004 ◽

Vol 19 (4) ◽

pp. 1234-1242 ◽

Cited By ~ 1

Author(s):

D.U. Tulyaganov ◽

S. Agathopoulos ◽

H.R. Fernandes ◽

J.M.F. Ferreira

Keyword(s):

Crystallization Temperature ◽

Crystallization Process ◽

Glass Ceramics ◽

Chemical Properties ◽

Synthesis And Characterization ◽

Na Ions ◽

Anions And Cations ◽

And Chemical Properties

Ions of Li, Na, K, and B were incorporated in Ca-mica, CaMg3Al2Si2O10F2. The crystallization process and the properties of the resulting glass-ceramics were experimentally determined, and the role of the anions and cations is discussed. According to the results, Li, K, and Na ions strongly affected the formation of the crystalline phases. Until 900 °C, pargasite and F-cannilloite amphiboles and KLi-mica were predominately crystallized. The two amphiboles are dissociated, yielding stable forsterite at 900 °C and Ca-mica and spinel at 950 °C. KLi-mica showed remarkable stability and growth within the investigated temperature range, until 1000 °C. The optimum crystallization temperature for the investigated glass-ceramics is between800 °C and 900 °C. The produced glass-ceramics exhibited capability for easy bulk crystallization, high whiteness, translucency, and mechanical and chemical properties suitable for several applications.

Cerium oxide containing canasite based glass-ceramics for dental applications: Crystallization behavior, mechanical and chemical properties

Ceramics International ◽

10.1016/j.ceramint.2021.12.059 ◽

2021 ◽

Author(s):

Zahra Shamohammadi Ghahsareh ◽

Sara Banijamali ◽

Alireza Aghaei

Keyword(s):

Cerium Oxide ◽

Crystallization Behavior ◽

Glass Ceramics ◽

Chemical Properties ◽

Dental Applications ◽

And Chemical Properties

Thermal and chemical properties of diopside-wollastonite glass-ceramics in the SiO 2 –CaO–MgO system from raw materials

Ceramics International ◽

10.1016/s0272-8842(02)00114-1 ◽

2003 ◽

Vol 29 (3) ◽

pp. 265-269 ◽

Cited By ~ 45

Author(s):

S.A.M. Abdel-Hameed ◽

A.A. El-kheshen

Keyword(s):

Raw Materials ◽

Glass Ceramics ◽

Chemical Properties ◽

And Chemical Properties

Statistical criteria of stellar population types

Symposium - International Astronomical Union ◽

10.1017/s0074180900053304 ◽

1966 ◽

Vol 24 ◽

pp. 101-110

Author(s):

W. Iwanowska

Keyword(s):

Stellar Population ◽

Chemical Properties ◽

Spectrophotometric Study ◽

Physical And Chemical Properties ◽

Population Type ◽

The Galaxy ◽

Distribution Parameters ◽

Physical And Chemical ◽

Statistical Criteria ◽

And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

The microstructure of a TiB2/Ti-47 Al composite material

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100155347 ◽

1989 ◽

Vol 47 ◽

pp. 674-675

Author(s):

O. Popoola ◽

A.H. Heuer ◽

P. Pirouz

Keyword(s):

Composite Material ◽

Ion Beam ◽

Chemical Properties ◽

Intermetallic Alloys ◽

Transmission Electron ◽

Diamond Polishing ◽

Al Composite ◽

The Matrix ◽

Argon Ion ◽

And Chemical Properties

The addition of fibres or particles (TiB2, SiC etc.) into TiAl intermetallic alloys could increase their toughness without compromising their good high temperature mechanical and chemical properties. This paper briefly discribes the microstructure developed by a TiAl/TiB2 composite material fabricated with the XD™ process and forged at 960°C.The specimens for transmission electron microscopy (TEM) were prepared in the usual way (i.e. diamond polishing and argon ion beam thinning) and examined on a JEOL 4000EX for microstucture and on a Philips 400T equipped with a SiLi detector for microanalyses.The matrix was predominantly γ (TiAl with L10 structure) and α2(TisAl with DO 19 structure) phases with various morphologies shown in figure 1.