The phase composition and microstructure of ramie fiber fabric legacy structure Al2O3-Cu composite materials with preform infiltration method were investigated by means of XRD,SEM and EDS.Tensile tests were conducted.The results showed that Al2O3 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 Al2O3.After reduction and sintering at 1020℃,the Cu phase co-melted with the bulk Al2O3 phase and the precipitated CuAlO2 phase.The outer surface of Al2O3-Cu was covered by Cu protective layer and the inner core was cross-sectioned (Cu+Al2O3+CuAlO2).And its tensile strength was 10.73MPa.
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基金资助
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)
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