简介概要

两种不同涂层的Ti纤维增强TiAl基复合材料

来源期刊:中国有色金属学报1996年第4期

论文作者:何贵玉 胡世平 储双杰 李烈凤 张太贤 蔡学章

文章页码:113 - 116

关键词:Ti纤维; TiAl基复合材料;Y2O3涂层;Al2O3涂层

Key words:Ti-fiber; TiAl matrix composite; Y2O3 coat; Al2O3coat

摘    要:研究了涂覆单一涂层Y2O3或Al2O3的Ti纤维增强γ-TiAl基复合材料的界面和性能。运用物理气相沉积法在Ti纤维表面涂覆Y2O3或Al2O3涂层后,然后用类似箔叠法制得Ti- Y2O3/γ-TiAl和Ti- Al2O3/γ-TiAl复合材料。复合材料的弯曲强度从449MPa提高到562MPa(Ti- Y2O3/γ-TiAl)或573MPa(Ti- Al2O3/γ-TiAl),而且高于纯Ti纤维增强TiAl基复合材料的弯曲强度。纤维与基体间的界面反应层厚度由30μm(Ti/γ-TiAl)减少为14μm(Ti- Y2O3/γ-TiAl)或20μm(Ti- Al2O3/γ-TiAl)。

Abstract: The interface and properties ofγ-TiAl intermetallic matrix composites reinforced by single Y2O3 or Al2O3 coat Ti-fiber were investigated. The surfaces of Ti-fibers were coated with Y2O3 or Al2O3 by physical vapor deposition (PVD), then the Ti-Y2O3/γ-TiAl or Ti-Al2O3/γ-TiAl composites were prepared by near lamination. The results indicate that the bending strength of the composites not only increases from 449 MPa to 562 MPa(Ti-Y2O3/γ-TiAl) or 573 MPa(Ti-Al2O3/γ-TiAl), but also is larger than that of TiAl matrix composites reinforced by pure Ti-fiber. The thickness of interface of fiber matrix decreases from 30μm(Ti/γ-TiAl)to 14μm(Ti-Y2O3/γ-TiAl)or 20μm(Ti-Al2O3/γ-TiAl).

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