Li_2O掺杂对SiO_2-Al_2O_3-MgO系玻璃结构和力学性能的影响
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摘要
采用传统熔体冷却法制备了Li_2O掺杂量(质量分数)为0～3.0%的SiO_2-Al_2O_3-MgO玻璃,探讨了Li_2O掺杂量对玻璃热稳定性、结构稳定性以及力学性能的影响。结果表明:掺杂Li_2O能有效降低玻璃的软化温度;随着Li_2O掺杂量的增加,玻璃的光学带隙先减小后增大,结构稳定性、热稳定性、力学性能先增强后减弱,当Li_2O掺杂量为1.0%时,玻璃的结构最稳定、弯曲和压缩性能最优。
SiO_2-Al_2O_3-MgO glasses doped with 0-3.0 wt% Li_2O were prepared by conventional melt quenching technique,and the effects of Li_2O doping amount on thermal property,structural stability and mechanical properties of the glass were investigated.The results show that the doping of Li_2O reduced the softening temperature of the glass effectively.With the increase of Li_2O doping amount,the optical band gap of the glass decreased first and then increased,while the structural stability,thermal stability and mechanical properties increased first and then decreased.When the Li_2O doping amount was 1.0 wt%,the glass had the most stable structure and the best bending and compressive properties.
SiO_2-Al_2O_3-MgO glasses doped with 0-3.0 wt% Li_2O were prepared by conventional melt quenching technique,and the effects of Li_2O doping amount on thermal property,structural stability and mechanical properties of the glass were investigated.The results show that the doping of Li_2O reduced the softening temperature of the glass effectively.With the increase of Li_2O doping amount,the optical band gap of the glass decreased first and then increased,while the structural stability,thermal stability and mechanical properties increased first and then decreased.When the Li_2O doping amount was 1.0 wt%,the glass had the most stable structure and the best bending and compressive properties.
引文
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[4]钱俊,姜建华,朱源泰,等.添加氧化锂对绝缘子玻璃性能的影响[J].硅酸盐通报,2006,25(3):6-9.
[5] ALAO A R,YIN L.Nano-mechanical behaviour of lithium metasilicate glass-ceramic[J].Journal of the Mechanical Behavior of Biomedical Materials,2015,49:162-174.
[6] ARVIND A,KUMAR R,DEO M N,et al.Preparation,structural and thermo-mechanical properties of lithium aluminum silicate glass-ceramics[J].Ceramics International,2009,35(4):1661-1666.
[7] WARING R K Jr, HSU W Y.Urbach rule behavior in strongly absorbing fine particle solids[J].Journal of Applied Physics,1983,54(7):4093-4096.
[8] KAMEDA J,BLOOMER T E.Kinetics of grain-boundary segregation and desegregation of sulfur and phosphorus during post-irradiation annealing[J].Acta Materialia,1999,47(3):893-903.
[9] IVASHCHENKO V V,KOZLOV A V,MOISEEV V F,et al.Strain hardening and structural changes in molybdenum in tension with the application of ultrasonic vibrations[J].Strength of Materials,1985,17(3):368-373.
[10] YUSUB S, NARENDRUDU T, SURESH S, et al.Structural investigation of vanadium ions doped Li2O-PbOB2O3-P2O5glasses by means of spectroscopic and dielectric studies[J].Journal of Molecular Structure,2014,1076:136-146.
[11] DOWEIDAR H,SADDEEK Y B.FTIR and ultrasonic investigations on modified bismuth borate glasses[J].Journal of Non-Crystalline Solids,2009,355(6):348-354.
[12] SHARMA S K,VIRGO D, MYSEN B O.Structure of glasses and melts of Na2O·xSiO2(x=1,2,3)composition from Raman spectroscopy[J].Carnegie Institution of Washington Year Book,1978,77:649-652.
[13]王觅堂,程金树,李梅,等.Y2O3掺杂对硅酸盐玻璃结构及其熔体黏度的影响[J].硅酸盐学报,2013,41(1):115-121.
[14] MCMILLAN P,PIRIOU B.Raman spectroscopy of calcium aluminate glasses and crystals[J].Journal of Non-Crystalline Solids,1983,55(2):221-242.
[15] MENG Z,JIANG H,HUANG Y R,et al.The oxidation state of sulfur detected in Na2O-CaO-SiO2float glass by Xray absorption near edge structure spectra[J].Journal of Wuhan University of Technology(Mater Sci Ed),2013,28(1):79-81.
[16] OBAYES H K,WAGIRAN H,HUSSIN R,et al.A new strontium/copper co-doped lithium borate glass composition with improved dosimetric features[J]. Journalof Luminescence,2016,176:202-211.
[17] GEDAM R S,RAMTEKE D D.Influence of CeO2addition on the electrical and optical properties of lithium borate glasses[J].Journal of Physics and Chemistry of Solids,2013,74(10):1399-1402.
[18] MOLLA A R,KESAVULU C R,CHAKRADHAR R P S,et al.Microstructure, mechanical,thermal, EPR,and optical properties of MgAl2O4∶Cr3+spinel glass-ceramic nanocomposites[J].Journal of Alloys and Compounds,2014,583:498-509.
[19] SINGH S,KALIA G,SINGH K.Effect of intermediate oxide(Y2O3)on thermal,structural and optical properties of lithium borosilicate glasses[J].Journal of Molecular Structure,2015,1086:239-245.