MnSb/Sb共晶复合材料与凝固界面稳定性  

Mn Sb/ Sb EUTECTIC COMPOSITES AND SOLIDIFYING INTERFACE STABILITY

作　　者：潘冶[1] 孙国雄[1] 

机构地区：[1]东南大学

出　　处：《材料研究学报》1999年第4期359-363,共5页Chinese Journal of Materials Research

基　　金：高等学校博士学科点专项科研基金;江苏省应用基础研究计划资助

摘　　要：用 Ｂｒｉｄｇｍａｎ 法制备了 Ｍｎ Ｓｂ／ Ｓｂ 棒状共晶复合材料， 得出其组织标度律和平界面生长条件． 基于棒状共晶界面前沿的成分过冷和曲面过冷， 估算了 Ｍｎ Ｓｂ／ Ｓｂ 棒状共晶平界面生长临界速度， 与实验结果吻合较好． 揭示了目前沿用的成分过冷（ Ｃ Ｓ）PAN Ye  SUN Guoxiong( Department of Mechanical Engineering , Southeast University , Nanjing 210018) A bstract Mn Sb/ Sb rod eutectic co mposites have been produced by Bridgm an technique . The scalingla w of the microstructures and the conditions of plane interface growth are experim entally obtained . Basedon constitutional supercooling ( C S) and curvature supercooling on the rod eutectic interface ,the critical ve locity of Mn Sb/ Sb eutectic growing with a plane interface is theoretically estimated , which is in good agree m ent with the experim entalresults . The shortcomings in application ofthe C Scriterion available to judge eu tectic interface stability are also clarified .

关 键 词：复合材料 界面稳定性 棒状共晶 定向凝固 MNSB 

分 类 号：TB33[一般工业技术—材料科学与工程] TG111.4[金属学及工艺—物理冶金]