本文選題：紅外玻璃　切入點(diǎn)：冷卻方式　出處：《西安工業(yè)大學(xué)》2015年碩士論文

【摘要】：作為一種新型的紅外光學(xué)材料,硫系玻璃以其性能連續(xù)可調(diào)、紅外透過(guò)范圍寬、制造成本低、可模壓成型而引起了人們的廣泛關(guān)注。然而硫系玻璃較差的力學(xué)性能和均勻性,在一定程度上限制了它的推廣和應(yīng)用。本文研究了Se基紅外玻璃的微晶化工藝,試樣不同位置下的組織和性能以及模壓成型工藝。論文主要研究結(jié)果如下：(1)不同冷卻方式對(duì)玻璃紅外透過(guò)率和雜質(zhì)吸收影響很大�？绽湓嚇拥募t外透過(guò)率高于水冷試樣,空冷試樣在8-12μmm波段紅外透過(guò)率達(dá)70%以上,水冷試樣的紅外透過(guò)率達(dá)64%；空冷試樣的雜質(zhì)吸收強(qiáng)度大于水冷試樣,由于空冷試樣冷速慢,氫在硒中的固溶度隨溫度的下降逐漸增大,Se-H雜質(zhì)吸收強(qiáng)度增大。(2)水冷試樣斷裂韌性較大,更容易獲得高強(qiáng)度的硫系玻璃。經(jīng)Tg+30℃/20h熱處理后,水冷試樣的斷裂韌性值達(dá)到0.414Mpa·m1/2,較未熱處理值提高了26%,空冷試樣的斷裂韌性值僅為0.368Mpa·m1/2。(3)硫系玻璃上端的綜合性能優(yōu)于下端,上端樣品紅外透過(guò)率達(dá)64%,斷裂韌性達(dá)0.373Mpa·m1/2,,而下端樣品紅外透過(guò)率達(dá)58%,斷裂韌性達(dá)0.367Mpa·m1/2;邊緣樣品的綜合性能優(yōu)于玻璃中心,邊緣樣品紅外透過(guò)率達(dá)65%,致密性好,雜質(zhì)吸收小,而中心樣品紅外透過(guò)率達(dá)60%,析晶能力強(qiáng),Se-H雜質(zhì)吸收大。(4)片狀模壓制品的紅外透過(guò)率高達(dá)55%,成型性好,表面光潔度高,而粉末狀模壓制品紅外透過(guò)率為45%,融合性差。獲得較優(yōu)的模壓工藝參數(shù)為：模壓溫度310℃,模壓壓力10kg,保溫時(shí)間70-90min和保壓時(shí)間60min。
[Abstract]:As a new type of infrared optical material, sulfur glasses have attracted much attention due to their continuously adjustable properties, wide infrared transmission range, low manufacturing cost and molded molding. However, sulfur glasses have poor mechanical properties and uniformity. To some extent, its popularization and application are limited. In this paper, the process of glass-ceramics based on se is studied. The main results of this paper are as follows: different cooling methods have great influence on the infrared transmittance and impurity absorption of glass. The infrared transmittance of air-cooled sample is higher than that of water-cooled sample. The infrared transmittance of air-cooled sample is more than 70% in 8-12 渭 mm band, and the infrared transmittance of water-cooled sample is 64. The impurity absorption strength of air-cooled sample is higher than that of water-cooled sample, because the cooling rate of air-cooled sample is slow. The solid solubility of hydrogen in selenium increases gradually with the decrease of temperature. The absorption strength of Se-H is increased. 2) the fracture toughness of water-cooled samples is larger and it is easier to obtain high strength sulfur glasses. After heat treatment at 30 鈩，

本文編號(hào)：1657153