预制体浸渗法苎麻纤维织物遗态结构Al_2O_3-Cu复合材料的制备及其性能研究  

Preparation and property of ramie fiber fabric legacy Al_2O_3-Cu with preform infiltration

作　　者：李笑然 王俊勃 胡新煜 姜凤阳[2] 王蒙 Li Xiaoran;Wang Junbo;Hu Xinyu;Jiang Fengyang;Wang Meng(School of Materials Engineering, Xi'an Polytechnic University, Xi'an 710048;School of Materials Science,Northwestern Polytechnical University,Xi'an 710072)

机构地区：[1]西安工程大学材料工程学院,西安710048 [2]西北工业大学材料科学学院,西安710072

出　　处：《化工新型材料》2019年第5期100-103,108,共5页New Chemical Materials

基　　金：国家自然科学基金(21603169);陕西省科技攻关项目(2016-GY014);西安工程大学研究生创新基金项目(CX201704)

摘　　要：采用预制体浸渗法制备苎麻纤维织物遗态结构Al_2O_3-Cu复合材料,利用X射线衍射仪、扫描电子显微镜和能谱分析仪研究复合材料的物相组成及微观形貌,并进行拉伸试验研究。结果表明:Al_2O_3陶瓷预制体完整地保留了苎麻纤维织物遗态结构,经氧化浸渍形成了由CuO和偏铝酸亚铜(CuAlO_2)包覆Al_2O_3为组织特征的柱状铆接结构。经1020℃还原烧结,Cu相与本体Al_2O_3相和析出CuAlO_2相共融互渗,形成了由Cu保护层覆盖、以交叉片状组织(Cu+Al_2O_3+CuAlO_2)为内衬的Al_2O_3-Cu复合材料,其拉伸强度为10.73MPa。The phase composition and microstructure of ramie fiber fabric legacy structure Al2 O3-Cu composite materials with preform infiltration method were investigated by means of XRD,SEM and EDS.Tensile tests were conducted.The results showed that Al2 O3 preform retained the complete ramie fiber fabric heritage structure.Oxidation impregnation samples formed a columnar riveted structure which tissue feature was CuO and CuAlO2 coated Al2 O3.After reduction and sintering at 1020℃,the Cu phase co-melted with the bulk Al2 O3 phase and the precipitated CuAlO2 phase.The outer surface of Al2 O3-Cu was covered by Cu protective layer and the inner core was cross-sectioned(Cu+Al2 O3+CuAlO2).And its tensile strength was 10.73 MPa.

关 键 词：预制体浸渗法 苎麻纤维织物 遗态结构 Al2O3-Cu 

分 类 号：TB33[一般工业技术—材料科学与工程]