用于镍钛合金真空感应熔炼的滑铸法制备（钙，锶，钡）锆酸盐坩埚

Preparation of a (Ca,Sr,Ba)ZrO Crucible by Slip Casting for the Vacuum Induction Melting of NiTi Alloy.

作者信息

Ding Shijia, Li Mingliang, Wang Hailong, Zhu Jinpeng, Shao Gang, Xu Hongliang, Lu Hongxia, Zhang Rui

机构信息

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.

Zhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450001, China.

出版信息

Materials (Basel). 2024 Apr 22;17(8):1924. doi: 10.3390/ma17081924.

DOI:10.3390/ma17081924

PMID:38673281

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11052479/

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)ZrO 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)ZrO crucible was 0.0173 wt.%, which fulfills the ASTM standard on biomedical TiNi alloys. The good resistance of the (Ca,Sr,Ba)ZrO 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.

摘要

真空感应熔炼是一种制备具有良好均匀性和低成本的钛合金更节能的工艺。但该技术的关键问题在于开发具有高稳定性的坩埚耐火材料。在本工作中，通过注浆成型制备了一种新型的（Ca,Sr,Ba）ZrO坩埚，并研究了其在熔炼NiTi合金中的性能。结果表明，在1500℃烧结后形成了单一固溶体，金属元素分布均匀。发现在（Ca,Sr,Ba）ZrO坩埚中熔炼后TiNi合金中剩余的氧和氮的总含量为0.0173 wt.%，符合生物医用TiNi合金的ASTM标准。（Ca,Sr,Ba）ZrO坩埚对熔融NiTi具有良好的抗性，这与高熵陶瓷的缓慢扩散效应有关。本研究为设计用于熔炼NiTi合金的高度合适的坩埚材料的过程提供了见解。