復(fù)合材料的界面
(1.哈爾濱工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院，哈爾濱 150001;
2.日本千葉工業(yè)大學(xué) 金屬工學(xué)科)
摘 要: 利用透射電鏡和高分辨電鏡對直徑為0.15μm的球形Al2O3顆粒增強(qiáng)相及其增強(qiáng)1070Al復(fù)合材料的界面進(jìn)行了觀察，結(jié)果表明： Al2O3顆粒是由一些角度相差較小的晶面構(gòu)成的多面體，多面體的各晶面是由密排面沿著密排晶向形成的臺階式結(jié)構(gòu)；0.15μm的Al2O3p/1070Al復(fù)合材料界面結(jié)合良好，沒有發(fā)現(xiàn)任何界面反應(yīng)物；由于顆粒的臺階式結(jié)構(gòu)導(dǎo)致鋁基體與Al2O3顆粒存在一定的位相關(guān)系。
關(guān)鍵字: 界面；Al2O3p/Al；金屬基復(fù)合材料；Al2O3
Al2O3 particles and interfacial
characteristic of Al2O3p/1070Al
composites
ZHANG Qiang1，Norio Kouno2
（1.School of Materials Science and Engineering，
Harbin Institute of Technology，Harbin 150001，China;
2.Chiba Institute of Technology， Narashino-shi，
Chiba， Japan）
Abstract:The microstructure of 0.15μm spherical Al2O3 particles and the interface of Al2O3p/1070Al composites were investigated by TEM and HREM. The results show that Al2O3 particles are polyhedrons constructed by planes between which angles are small. And the planes of polyhedrons exhibit stepped structure formed by the closed-packed planes along the closed-packed direction. The interface between the 1070Al matrix and Al2O3 reinforcements is well bonded and free from interfacial reaction products. Because of the stepped structure of Al2O3 particles，some preferential crystallographic orientation relationships between aluminum matrix and Al2O3 particles were observed.
Key words: interface; Al2O3p/Al; metal matrix composites; Al2O3
