稀土熔剂对铝熔体的覆盖保护作用  

Covering and Protecting Effects of Rare Earth Flux on Aluminum Melt

作　　者：倪红军[1] 黄明宇[1] 朱昱[1] 孙宝德[2] 

机构地区：[1]南通大学机械工程学院,南通226007 [2]上海交通大学材料科学与工程学院,上海200030

出　　处：《上海交通大学学报》2005年第1期23-26,共4页Journal of Shanghai Jiaotong University

基　　金：国家重点研究开发规划(973)资助项目项目(G1999064900);江苏省教委自然科学基金项目(D2KJD430002)

摘　　要：分别采用稀土JDN-I熔剂、C2Cl6和市售三合一熔剂B对A00纯铝熔体进行净化,获得各种熔剂膜.通过对上述熔剂膜进行扫描电镜、电子探针、能谱、X射线、X射线荧光等测试和分析得知,稀土熔剂在对铝熔体的净化过程中产生两层保护膜,接触铝熔体的内层由新型的条状纤维组织编织成,致密、韧性很好;接触空气的外层则完全由结晶态物质构成.而其他熔剂膜则没有上述特点.因而,稀土熔剂对纯铝熔体具有覆盖保护和降低熔损的作用.The fluxes, a rare earth flux-JDN-I flux, C2Cl6 and a three-functions flux-flux B, were used to purify A00 melt, respectively and then three kinds of flux films were obtained. Tested and analyzed with SEM, EPMA, EDS, XRD and XRF, it was found that a protection film of two layers is generated by JDN-I flux during the purification of aluminum melt. The internal layer of the film that contacts with aluminum melt has a kind of net structure that is tight and tenacious, which is interweaved with streaky structure. The external layer that contacts with atmosphere is also composed of crystalline substances. The other flux films have not the above characters. Therefore, JDN-I flux has covering, protecting, and low melting loss functions.

关 键 词：稀土熔剂 熔剂膜 覆盖保护 熔损 

分 类 号：TG146.2[一般工业技术—材料科学与工程]