大连理工大学主页平台管理系统付雪松基于高温熔凝法Al2O3/ZrO2/YAG共晶陶瓷显微组织演变规律中文主页

论文成果

基于高温熔凝法Al2O3/ZrO2/YAG共晶陶瓷显微组织演变规律: 点击次数：; 发布时间： 2022-07-12; 发布时间：2022-07-12; 论文类型：期刊论文; 发表时间：2022-06-29; 发表刊物：材料工程; 所属单位：材料科学与工程学院; 期号：2; 页面范围：46-53; ISSN号：1001-4381; 摘要：As ultra-high-temperature structural materials ,the mechanical properties of eutectic oxide ceramics are closely related with microstructure characteristics .Melt-grown Al2O3/ZrO2/YAG eutec-tic ceramic was prepared by high temperature fused method .Effect of melt temperature and crystal seed on solidification microstructure evolution was investigated ,the structure evolution mechanism was discussed using the classical nucleation mechanism and Jack-hunt mode .Experiment results show the phase composition of solidified samples changes from α-Al2O3/c-ZrO2/YAG to α-Al2O3/c-ZrO2/YAP as the melt temperature increases from 1750℃ to 2000℃ .And the solidification microstructure evolves as follows :non-eutectic ceramic Al2O3/ZrO2/YAG ,irregular eutectic ceramic Al2O3/ZrO2/YAG ,nano-scale regular fibrous pattern eutectic Al2O3/ZrO2/YAG ,and complex coarse metastable composite ceramic Al2O3/ZrO2/YAP .Analysis shows that microstructure evolution is resulted from heterogeneous passivation with elevating temperature followed by variations of nucleation undercoo-ling and solidification path .Therefore ,choosing reasonable melt temperature and crystal seed are the key rules to control the microstructure of Al2O3/ZrO2/YAG eutectic ceramic .; 备注：新增回溯数据

上一条：微弧氧化处理TC4合金表面微动磨损性能

下一条：回火温度对40CrNi2Mo钢力学性能和干摩擦性能的影响

付雪松

同专业博导同专业硕导个人学术主页

副教授博士生导师硕士生导师

性别：男

毕业院校：大连理工大学

学位：博士

所在单位：材料科学与工程学院

学科：材料加工工程

办公地点：大连理工大学铸造中工程心

电子邮箱：