Mohammed obeid (6 résultats)

Taschenbuch. Etat : Neu. Druck auf Anfrage Neuware - Printed after ordering - Research Paper (postgraduate) from the year 2014 in the subject Chemistry - Materials Chemistry, , language: English, abstract: In this study, wollastonite (CaSiO3) has been synthesized by solid state reaction method at temperature range of 1050-1300 C from local raw materials e.g. silica sand and limestone with addition of small amount of B2O3 as a mineralizer to activate the reaction process during sintering. The resulting products are investigated employing XRD and SEM techniques. beta-wollastonite was obtained at 1050 C and transformed to pseudowollastonite ( -CaSiO3) at 1150 C. Physical and thermal properties have been evaluated. The batch sintered at 1250 C showed the highest value of density of about 1.98 g/cm3 with high shrinkage rate as compared with other batches. The results also revealed that thermal expansion coefficient is more compatible with results obtained from natural wollastonite.…

Taschenbuch. Etat : Neu. Druck auf Anfrage Neuware - Printed after ordering.

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 16 pp. Englisch.

Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -Research Paper (postgraduate) from the year 2014 in the subject Chemistry - Materials Chemistry, , language: English, abstract: Wollastonite (CaSiO3) has been synthesized by the solid state reaction method at a temperature range of 1050-1250¿ from local raw materials, e.g. silica sand and limestone as well as pure chemicals in the form of carbonate and quartz with and without B2O3 adding as a mineralized. The resulting products are investigated employing XRD and SEM techniques. ß-wollastonite was obtained at 1050¿ and transformed to pseudowollastonite (¿- CaSiO3) at 1150¿ due to the presence of B2O3. While the pure chemicals failed to give wollastonite at this range of temperature 1050-1150¿. As the temperature increased up to 1400¿, both experimental and standard samples have been melted. 16 pp. Englisch.…

Taschenbuch. Etat : Neu. Characteristic of Wollastonite Synthesized from Local Raw Materials | Mohammed Obeid | Taschenbuch | 8 S. | Englisch | 2015 | GRIN Verlag | EAN 9783656932499 | Verantwortliche Person für die EU: GRIN Publishing GmbH, Waltherstr. 23, 80337 München, info[at]grin[dot]com | Anbieter: preigu Print on Demand.…

Taschenbuch. Etat : Neu. Crystallization of Synthetic Wollastonite Prepared from Local Raw Materials | Mohammed Obeid | Taschenbuch | Englisch | 2015 | GRIN Verlag | EAN 9783656929512 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu Print on Demand. …