title: Nano-crystal glass-ceramics obtained by crystallization of vitrified red mud.
abstract: Glass has been obtained by melting red mud from Shandong Province in China with different additives. Suitable thermal treatments were employed to convert the obtained glass into nano-crystal glass-ceramics. X-ray diffraction (XRD) patterns showed that the main crystalline phase in both the glass-ceramics is wollastonite (CaSiO3). These crystals are homogeneously dispersed within the parent glass, with an average crystal size of less than 100 nm. The size of nano-crystals varies when different thermal processes were used. Physical and mechanical properties, such as density, thermal expansion coefficient, hardness, and bending strength, of the two glasses have been examined and the corresponding microstructures are discussed. These results demonstrate that both glass-ceramics have potential for a wide range of construction application.
authors.affiliation: Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China. pengf02@mails.tsinghua.edu.cn
authors.forename: Fei
authors.initials: F
authors.lastname: Peng
authors.forename: Kai-Ming
authors.initials: KM
authors.lastname: Liang
authors.forename: Hua
authors.initials: H
authors.lastname: Shao
authors.forename: An-Min
authors.initials: AM
authors.lastname: Hu
mesh_terms: D000535:Aluminum; D017610:Calcium Compounds; D002516:Ceramics; D002681:China; D003247:Conservation of Natural Resources; D003460:Crystallization; D005898:Glass; D006358:Hot Temperature; D007220:Industrial Waste; D036103:Nanotechnology; D017640:Silicates; D014961:X-Ray Diffraction
chemical_list: D017610:Calcium Compounds; D007220:Industrial Waste; D017640:Silicates; D000535:Aluminum; C031293:calcium silicate