蓝宝石单晶光纤生长及性能研究  

Growth and Property of Sapphire Single Crystal Fibers

作　　者：张泽宇 吴宇飞 王涛 张健 贾志泰 陶绪堂 ZHANG Zeyu;WU Yufei;WANG Tao;ZHANG Jian;JIA Zhitai;TAO Xutang(Institute of Crystal Materials,State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China;Shandong Research Institute of Industrial Technology,Jinan 250100,China)

机构地区：[1]山东大学晶体材料国家重点实验室,晶体材料研究院,济南250100 [2]山东省工业技术研究院,济南250100

出　　处：《人工晶体学报》2023年第7期1335-1344,共10页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51502157,52002218,52202008);山东省重点研发计划(2018CXGC0410);山东大学青年科学基金(2018WLJH66);功能材料与器件学科创新引智基地2.0(BP2018013);中国博士后科学基金面上项目(2022M721912);山东省自然科学基金(ZR2022QE013)。

摘　　要：蓝宝石单晶光纤结合了蓝宝石单晶熔点高、物理化学性能稳定的性能特点和光纤长径比大的结构优势,在高温传感、辐射探测等领域得到了广泛的研究。本文通过激光加热基座(LHPG)法成功制备出高质量蓝宝石单晶光纤,其最小直径为50μm,具有极高的柔韧性。在此基础上系统研究了晶体取向、晶体直径、退火温度等因素对蓝宝石单晶光纤应力分布及力学性能的影响规律,所制备的蓝宝石单晶光纤抗拉强度超过3000 MPa,展现出了优异的力学性能。Sapphire single crystal fibers possess structural advantage of high melting point,stable physical and chemical properties of sapphire and large length-to-diameter ratio of fiber,making them widely studied in the fields of high temperature sensing and radiation detection.In this paper,high quality sapphire single crystal fibers were successfully prepared by laser-heated pedestal growth(LHPG)method with a minimum diameter of 50μm and extremely high flexibility.On this basis,the influences of crystal orientation,crystal diameter,annealing temperature on the stress distribution and mechanical properties were systematically studied.The tensile strength of the prepared sapphire fiber exceeds 3000 MPa,showing its excellent mechanical properties.

关 键 词：单晶光纤 蓝宝石光纤 单晶生长 激光加热基座法 光纤应力 抗拉强度 

分 类 号：TB34[一般工业技术—材料科学与工程]