超声化学原位制备(ZrB_2+Al_3Zr)_p/2124复合材料及其磨损性能研究  

Wear property of(ZrB_2+Al_3Zr)_p/2124 composites synthesized by sonochemistry melt reaction

作　　者：焦雷[1] 赵玉涛[1] 王天平[1] 

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013

出　　处：《功能材料》2013年第7期988-992,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51174098;50971066);江苏高校优势学科建设工程资助项目(PAPD);江苏省高校优秀科技创新团队资助项目(苏教科[2011]11号)

摘　　要：在超声场下,以Al-Zr-B为反应体系,采用DMR熔体直接反应法,原位制备二元颗粒ZrB2+Al3Zr增强2124铝基复合材料。通过扫描电镜(SEM)、X射线衍射仪(XRD)等表征手段,研究了在超声场下二元增强颗粒ZrB2+Al3Zr的形貌、分布及尺寸情况。实验表明,采用DMR法成功制备二元颗粒增强2124铝基复合材料,增强颗粒分为ZrB2和Al3Zr,随着超声场的引入,颗粒呈现逐渐弥散并细化,尤其在1.8kW超声场下,增强颗粒形貌由原来的长条状、团聚态转变为弥散粒状。此外还研究其磨损性能变化规律。Ultrasonic field has a significant improvement on the microstructure,structure and properties of composite materials,in this article,our experiment is based on the Al-Zr-B reaction system under ultrasonic field,the in situ ZrB2＋Al3Zr particles-enforced 2124 aluminum-matrix composites are prepared via DMR direct melt reaction method.The morphology,distribution and size of the ZrB2＋Al3Zr particles in the ultrasonic field are studied by scanning electron microscopy（SEM） and X-ray diffraction（XRD）.The experimental results show that the binary particle-reinforced 2124 aluminum-matrix composites were successfully prepared via the DMR method,the reinforced particles are divided into ZrB2 and Al3Zr,and while the ultrasonic field was introduced into the system,particles were gradually dispersed and refined,especially in the 1.8kW ultrasonic field,the morphology of the reinforced particles translate from the original strip,reunion phase to diffuse granular.In addition,the improvement of wear properties is also discussed in this article.

关 键 词：超声化学 (ZrB2+Al3Zr)p 2124 原位制备 磨损性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]