BN与TiNi系合金熔体的界面反应

上海大学学报(自然科学版)

BN与TiNi系合金熔体的界面反应

张蔷，周星，刘宏葆，朱明，康迪，王小康，毛协民，李重河

上海大学材料科学与工程学院，上海 200072

收稿日期:2007-09-10 修回日期:1900-01-01 出版日期:2008-10-23 发布日期:2008-10-23
通讯作者: 毛协民

Interaction between Boron Nitride and the Melted TiNi Alloy

ZHANG Qiang,ZHOU Xing,LIU Hong-bao,ZHU Ming,KANG Di,WANG Xiao-kang,MAO Xie-min,LI Chong-he

School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

Received:2007-09-10 Revised:1900-01-01 Online:2008-10-23 Published:2008-10-23
Contact: MAO Xie-min

摘要/Abstract

摘要： 以高纯氮化硼（BN）作为坩埚材料，对其应用于TiNi系合金熔炼时的界面反应进行研究.研究BN在不同温度下（1 450 ℃，1 520 ℃），保持一定时间（90s,180 s,270 s,360 s）与TiNi系合金熔体的相互作用情况，得到了不同反应时间、反应温度下的界面层，并用扫描电子显微镜（scanning electron microscopy, SEM）、X射线衍射（Xray diffraction, XRD）和电子探针显微分析(electron probe microanalysis, EPMA)对界面进行形貌、物相和成分的分析，对反应机理作了讨论.研究结果表明，BN与熔体作用的产物在试验条件下不与熔体继续反应，从而保护了熔体不受到进一步污染.

关键词: TiNi合金熔体, 氮化硼, 坩埚材料, 界面反应

Abstract: Interaction between high-purity boron nitride (BN) and melted TiNi alloy was studied to determine if BN could be used as crucible material for melting TiNi alloy. A series of interface actions between them were performed for differentmelt temperatures (1 450 °C, 1 520 °C) and different holding times (90 s, 180 s, 270 s, 360 s). These interfaces were then investigated with scanning electron microscopy (SEM), X-ray diffraction, and electron probe microanalysis. The results showed that TiNi melt was slightly contaminated due to the limited reaction between BN and Ti under the conditions.

Key words: boron nitride, crucibles and refractory
, interfaces, TiNi melt

中图分类号:

张蔷;周星;刘宏葆;朱明;康迪;王小康;毛协民;李重河. BN与TiNi系合金熔体的界面反应[J]. 上海大学学报(自然科学版).

ZHANG Qiang;ZHOU Xing;LIU Hong-bao;ZHU Ming;KANG Di;WANG Xiao-kang;MAO Xie-min;LI Chong-he. Interaction between Boron Nitride and the Melted TiNi Alloy[J]. Journal of Shanghai University（Natural Science Edition）.