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氧化锆对锌硼硅玻璃热震稳定性的影响

The effect of zirconia on the thermal shock stability of ZnO-B2O3-SiO2 system glass
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摘要 在锌硼硅玻璃中添加0%~10%(质量分数)的部分稳定氧化锆粉体,在一定温度下烧结后制备成氧化锆/锌硼硅微晶玻璃。采用半圆涂敷法测试微晶玻璃的耐冷热激变炸裂的性能;利用万能试验机测量微晶玻璃遭受热冲击后的残留抗压强度;采用402ES.3电子热膨胀仪和TC-100常温接触式导热系数测定仪测试氧化锆,锌硼硅微晶玻璃的热膨胀系数和导热系数。结果表明,氧化锆可以明显增加微晶玻璃受冷热冲击而炸裂的次数,使微晶玻璃热冲击后残留抗压强度下降的程度大大减小。氧化锆/锌硼硅微晶玻璃的热膨胀系数与导热系数随着氧化锆含量的增加而下降。由此可见,氧化锆可以明显改善锌硼硅微晶玻璃的热震稳定性,从而提高其使用可靠性。 Zirconia/ZnO-B203-SiO2 glass ceramics was prepared by sintering the mixture of zirconia (0-10 wt%) and ZnO-B203-SiO2 system glass. The fracture property and the residual impact strength of the glass ceramics after thermal shock process was studied by semicircular spread method and universal testing machine. The coefficient of expansion and conductivity of the glass ceramics were investigated by 402ES-3 type dilatometer and TC-100 type thermal conductivity detector respectively. The results show that zirconia can increase the thermal shock resistance of the glass ceramics and lessen the decrement of residual impact strength after thermal shock process. The coefficient of expansion and conductivity of the glass ceramics were decrease as the content of zirconia increases. Thus it can be seen that superfine ZrO2 improve the thermal shock resistance of ZrO-B2O3-SiO2 system glass, which benefits its work stability.
出处 《功能材料》 EI CAS CSCD 北大核心 2007年第A08期3278-3280,共3页 Journal of Functional Materials
关键词 氧化锆 锌硼硅玻璃 微晶玻璃 热震稳定性 zirconia ZnO-B2O3-SiO2 system glass: glass ceramics thermal shock stability
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