查询词典 devitrification

A little Al2O3 would decrease high temperature viscosity of glaze flux, dep ress its devitrification and accordingly improve the whiteness and glossiness of glaze surface.

少量Al2O3则可以降低釉熔体高温粘度，抑制析晶，改善釉面白度和光泽度。

And then the effects of compositions on the mechanical performance, characteristic temperatures, thermal expansion and chemical stability of the glass were discussed. Researches on lead borate sealing glasses show that PbO/B2O3 ratio exerts the most important effect on glass network. ZnO is beneficial to stabilize the glass against devitrification . Bi2O3 has little effects on the sealing temperature, while it helps to adjust the thermal expansion coefficient of lead borate glasses in a definitive range. When 0.5～4 mol% GeO2 is introduced, the glass possesses the highest stability and lowest sealing temperature (400 ?C), which is desirable for low-temperature sealing.

通过对含铅的硼酸盐封接玻璃研究得出，PbO/B2O3比是影响玻璃网络最主要的因素；添加ZnO有助于增强玻璃的稳定性，抑制析晶；Bi2O3对高铅系列配方玻璃的封接温度影响不大，但可使铅硼系列玻璃体系的热膨胀系数在一定范围内可调；在高铅系列配方中，引入0.5～4mol%的GeO2可有效地抑制玻璃析晶，降低封接温度；最终获得了两种性能较好的低熔点铅硼酸盐封接玻璃配方，G3封接温度低达400℃，其PbO含量为54mol%左右，BL10玻璃的封接温度为440℃，但其铅含量大大降低，仅为36mol%。

When TiO〓 content is increased, the surfacial energy formed by crystals may be reduced, the devitrification degree, strengthened and the content of wollastonite in crystal phase raised; if Cr〓O3〓 content is increased, the crystal size is enlarged, and the content of diopside in crystal phase, raised; if the sulphide content is increased; the reduction atmosphere is heightened and the content of wollastonite become bigger.

晶核剂浓度研究表明，晶核剂浓度不同，对基础玻璃析晶强度，晶相含量和晶体尺寸有一定的影响，当TiO〓含量增加时，可以降低晶体形成的表面能，析晶强度增大，晶相中硅灰石含量增多；Cr〓O〓含量增加，晶体尺寸增大，晶相中透辉石含量增加；硫化物增多，还原气氛增大，同时硅灰石含量增多。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。