Effect of Nb on the Interfacial Wettability in Al_2O_3/Medium Mn Steel

作     者：Sirong YU, Yaohui LIU and Zhenming HECollege of Materials Science and Engineering, Jilin University, Changchun 130025, China 

作者机构：College of Materials Science and Engineering Jilin University Changchun 130025 China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2003年第19卷第6期

页      面：625-627页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：National Natural Science Foundation of China(5870044) 

主　　题：Madium Mn steel A12O3 Nb Wettalility 

摘      要：To develop medium Mn steel (MMS) matrix composites reinforced by AI2O3 particles, the effect of Nb on the interfacial wettability of AI2O3/MMS and its mechanism were investigated in this paper. The results show that the wetting angle of the specimens with different Nb contents are bigger than that of the specimen without Nb at the first stage, and then decreases with time at 1450℃. At certain time, the wetting angle is lower than that of the specimen without Nb. At 1550 and 1600℃, the wetting angle of the specimens containing Nb decreases quickly with time at first stage. After 10 min, the wetting angle reaches a steady state, and hardly changes with time. The mechanisms of Nb to improve the wettability can be attributed to the enrichment of Nb at the interface and Nb serves as surface active agent of MMS at T1550℃, and reduces the interfacial energies.