Chemical inertness and thermal shock resistance of ZrN/AlN composites for TiNi alloy induction melting

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2024-09-24 DOI:10.1016/j.ceramint.2024.09.311

Ruyuan Wang, Chao Zhao, Haolong Liu, Jinbao Long, Xuan Luo, Minghan Sun, Ning Li

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引用次数: 0

Abstract

TiNi alloys with excellent mechanical properties and unique functional characteristics show substantial potential for producing engineered structural components and biomedical materials. However, the high reactivity of molten TiNi poses significant challenges when ceramic crucibles are used in vacuum induction melting, inevitably resulting in severe ingot contamination. In this study, we report an innovative method for producing high-purity, low-contamination TiNi ingots by using a ZrN/AlN composite ceramic crucible. Fundamentally, this ZrN/AlN composite crucible fabricated with vacuum pressureless sintering technology, is characterized by its high relative density (>95 %) and absence of cracks. The ZrN/AlN composites exhibit impressive properties, including excellent flexural strength, high thermal conductivity, and exceptional thermal shock resistance. Notably, during induction melting, the crucible surface forms a dense TiN barrier layer, thereby protecting the crucible substrate. Compared with traditional oxide refractories, the as-prepared ingots have a low interstitial atom content (Wt. (O, N) < 1000 ppm), demonstrating the superior corrosion resistance of the ZrN/AlN composite crucible. This work provides a comprehensive understanding of crucible-melt interaction mechanisms and a promising method for producing high-purity TiNi alloys.

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用于钛镍合金感应熔炼的 ZrN/AlN 复合材料的化学惰性和抗热震性

钛镍合金具有优异的机械性能和独特的功能特性，在生产工程结构部件和生物医学材料方面具有巨大潜力。然而，当在真空感应熔炼中使用陶瓷坩埚时，熔融 TiNi 的高反应性带来了巨大挑战，不可避免地导致严重的铸锭污染。在本研究中，我们报告了一种使用 ZrN/AlN 复合陶瓷坩埚生产高纯度、低污染钛镍铸锭的创新方法。从根本上说，这种采用真空无压烧结技术制造的 ZrN/AlN 复合坩埚具有相对密度高（95%）和无裂纹的特点。ZrN/AlN 复合材料表现出令人印象深刻的特性，包括出色的抗弯强度、高导热性和优异的抗热震性。值得注意的是，在感应熔化过程中，坩埚表面会形成致密的 TiN 隔离层，从而保护坩埚基底。与传统的氧化物耐火材料相比，制备的铸锭具有较低的间隙原子含量（Wt. (O, N) < 1000 ppm），这表明 ZrN/AlN 复合坩埚具有优异的耐腐蚀性。这项工作为全面了解坩埚与熔体之间的相互作用机制以及生产高纯度钛镍合金提供了一种可行的方法。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.