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Journal of Shanghai University（Natural Science Edition）

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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   

  1. 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

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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

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