학술논문
Preparation of a (Ca,Sr,Ba)ZrO 3 Crucible by Slip Casting for the Vacuum Induction Melting of NiTi Alloy.
Document Type
Article
Author
Source
Subject
*SLIP casting
*NICKEL-titanium alloys
*ALLOYS
*CRUCIBLES
*MELTING
*ALKALINE earth metals
*TITANIUM alloys
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Language
ISSN
1996-1944
Abstract
Vacuum induction melting is a more energy-efficient process for the preparation of a titanium alloy with good homogeneity and low cost. But the crucial problem for this technology is in developing a crucible refractory with high stability. In the present work, a novel (Ca,Sr,Ba)ZrO3 crucible was prepared by slip casting and its performance in melting NiTi alloy was studied. The results showed that a single solid solution was formed with a homogeneous distribution of metal elements after sintering at 1500 °C. It was found that the total content of oxygen and nitrogen remaining in the TiNi alloy after melting in the (Ca,Sr,Ba)ZrO3 crucible was 0.0173 wt.%, which fulfills the ASTM standard on biomedical TiNi alloys. The good resistance of the (Ca,Sr,Ba)ZrO3 crucible to molten NiTi has a relationship with the sluggish diffusion effect of high-entropy ceramics. This study provides insights into the process of designing highly suitable crucible material for melting a NiTi alloy. [ABSTRACT FROM AUTHOR]