Influences of TiO 2 Addition on the Crystallization Behavior, Microstructure, and Magnetic Properties of Li 2 O-MnO 2 -F
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VARIOUS bioglasses and glass–ceramics have been studied,[1] including Ceravital glass–ceramics containing apatite,[2] and Na2O-CaO-SiO2-P2O5 bioglass.[3] The apatite–wollastonite (A–W) glass–ceramics with superior mechanical properties had been reported by Kokubo et al.[4] and Kokubo.[5] Wu et al.[6] also reported that the MgO-CaO-Al2O3-SiO2-P2O5 glass–ceramics containing small apatite precipitates displayed a high chemical strength resulting from anorthite crystals on the surface of the P2O5-rich phase. The crystallization behavior of silica-free 5K2O-45CaO-50P2O5 (KCP) glass have been HUY-ZU CHENG and CHIEN-FA WANG, are with the Department of Materials Science and Engineering, I-Shou University, 1 Hsueh-Cheng Road, Section 1, Ta-Hsu, Kaohsiung 84001, Taiwan R.O.C. HUEY-JIUAN LIN and CHI-SHIUNG HSI, are with the Department of Materials Science and Engineering, National United University, 1 Lien-Da Road, Kung-Ching Li, Miao Li 360, Taiwan R.O.C. MOO-CHIN WANG, is with the Department of Fragrance and Cosmetic Science, Kaohsiung Medical University, 100 ShihChuan 1st Road, Kaohsiung 807, Taiwan R.O.C. Contact e-mail: [email protected] XIUJIAN ZHAO, is with the State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luo-shi road, Hongshan district, Wuhan, Hubei 430070, P.R. China. HONG JIANG and CHANG-JIU LI, are with the Special Glass Key Laboratory of Hainan Province, Hainan University, 58 People Road, Haikou City, Hainan Province, P.R. China. PENG LU, is with the Aviation Industry Corporation of China (Hainan) Special Glass Materials Co., Ltd., Sourth 1st Road, Economic Development Zone of Old City, Laocheng, Hainan Province, P.R. China, and also with Special Glass Engineering Technology Research Center of Hainan Province, Haikou City, P.R.China. Manuscript submitted July 13, 2014. METALLURGICAL AND MATERIALS TRANSACTIONS A
reported by Wang et al.[7] They observed that the crystalline phases of the bulk sample were KCa(PO)3, 4CaOÆ3P2O5, and b-Ca(PO3)2 when the KCP glass was crystallized at 903 K (630 C) for 4 hours. Glass–ceramics have been implemented for application in biological and healthcare fields, such as drug delivery and cell separation. They have also been used in magnetic intracellular hyperthermia treatment of cancer by magnetism due to research findings in the composition, the morphology and the interpenetration mode of the various crystalline and glassy phases involved.[8–10] Currently, ferromagnetic phase content bioceramics has been widely used as bone fillers and introduced for hyperthermia treatment.[8,11,12] Glass–ceramics containing a magnetic phase in a biocompatible glassy matrix could be used as thermoseeds for hyperthermia treatment of cancer.[8,13,14] During such, a magnetic glass–ceramic (MGC) piece implanted close to the cancerous tissue is exposed to an alternating magnetic field.[12,15–17] The magnetic hysteresis loss generates heat and kills the infected tissue. MGCs are complex, multiphase biocompatible materials derived from glass with th
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