Network Structures and Thermal Characteristics of Bi2O3–SiO2–B2O3 Glass Powder by Sol-Gel
Glass powder of Bi2O3–SiO2–B2O3 was prepared by Sol-Gel method, and the powder was heated to the temperature range from 200 to 800 °C to study the network structures formed during heat treatment. The effect of structures change of the glass powders on the transition temperature and sintering softening properties was analyzed. The results indicate that Bi3+ get into the network structure with the rising of heat treatment temperature, [BiO6] octahedral and [BiO3] triangle, [BO4] tetrahedron and [BO3] triangle connected with [SiO4] tetrahedron separately in the way of vertex connecting to build the network structures. The O1s and Bi4f binding energies increase gradually while the B1s binding energies decrease, which strengthen the stability of glass structure. This causes an increase in the transition temperature and a decrease in the wettability of the glass powder. The glass powders treated at 600 °C have excellent sintering properties. The glass transition temperature (Tg) is about 542, and the thermal expansion coefficient (25–300 °C) is close to 6.57 × 10−6/°C.
This work was financially supported by Guangdong Provincial Natural Science Fund of China (Nos. 2006B14701003) and Guangzhou Science and Technology Project of China (Nos. 2015110010034).
- 1.Y.U. Xiaojun, Z.H.U. Lihui et al., Effects of Bi2O3 on structure and properties of Al2O3-ZnO-Bi2O3-B2O3 low-melting glasses. Electron. Compon. Mat. 32(9), 12–14 (2013)Google Scholar
- 2.H.E. Feng, D.E.N.G. Dawei, W.A.N.G. Jun, Effect of Bi2O3 contents on sintering property of Bi2O3-ZnO-B2O3 system low-melting electronic sealing glass. J. Wuhan Univ. Technol. 31(22), 1–4 (2009)Google Scholar
- 3.Z. Hongping, Z. Renjie, Effects of CuO on structure and heat treatment of Bi2O3-B2O3-ZnO glasses. J. Ceram. 31(4), 569–574 (2010)Google Scholar
- 4.J. Cheng, F. Chen, S. Dai, et al., Vitreous network formation and optical characteristics of glasses within Bi2O3—B2O3 binary system. J. Chin. Ceram. Soc. 41(4), 475–479 (2013)Google Scholar
- 5.Y. Huang, Y. Li, J. Wang, et al., Network structures and characteristics of Bi2O3-ZnO-B2O3 Ternary system glasses. J. Chin. Ceram. Soc. 43(7), 998–1001 (2015)Google Scholar
- 8.B.B. Das, A. Srinivassan, M. Yogapriya, et al., Sol–gel synthesis and characterization of xCuO-(1-x)Bi2O3 (0.15 ≤ x ≤ 0.55) glasses by magnetic and spectral studies. J. Non-Cryst. Solids 427, 146–151 (2015)Google Scholar
- 9.M. Wang., Investigation of the structure evolution process in sol–gel derived CaO-B2O3-SiO2 glass ceramics. J. Non-Cryst. Solids 357, 1160–1163 (2011)Google Scholar
- 13.I. Ardelean, S. Cora, FTIR and Raman investigations of MnO-B2O3-Bi2O3. Optoelectron. Adv. Mater. 12(2), 239–243 (2010)Google Scholar
- 14.H.W. Nesbitt, G.M. Bancroft, et al., Bridging, non-brifging free (O2-) oxygen in Na2O-SiO2 glasses. J. Non-Cryst. Solids 1(357), 173–175 (2011)Google Scholar
- 15.L.E. Yingfeng, Y.U.A.N. Gecheng, L.I. Qian et al., Thermal properties of Bi2O3-SiO2-B2O3-Zn O-Al2O3 glass powders prepared by sol-gel method. China Powder Sci. Technol. 23(1), 85–87 (2017)Google Scholar