Understanding the wettability and solubility properties of TiCx-steel systems

IF 4.2 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Refractory Metals & Hard Materials Pub Date : 2024-08-06 DOI:10.1016/j.ijrmhm.2024.106841

Wen Gao , Yang Zhou , Songze Wu , Wenqing Wei , Chunpeng Zhang

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引用次数: 0

Abstract

Dense non-stoichiometric TiC_x ceramics (TiC_0.8, TiC_0.73, TiC_0.7 and TiC_0.58) had been fabricated by Spark Plasma Sintering (SPS) at elevated temperature and pressure. High temperature contact angle tests were performed on TiC_x-45 steel/brake disc (BD) materials using a sessile drop technique. The influence of temperature, ceramic and steel composition on wetting behavior was examined, and the interfacial reactions during liquid penetration were explored. The results had established that increased temperatures and decreased ceramic x values enhanced the wetting of TiC_x-steel systems. The wetting mechanisms of TiC_0.8–45 steel, TiC_0.73–45 steel, and TiC_0.7–45 steel systems were driven by dissolution effects with the formation of TiC and Fe. Conversely, wetting of TiC_0.58–45 steel was driven by reaction that resulted in the formation of brittle Fe₂Ti. Careful control of the C/Ti ratio was essential to prevent Fe₂Ti formation where the optimum TiC_x composition was identified (x = 0.7). At high temperatures, Ti atoms in TiC_x were more likely to combine with C atoms from Cr and Mo carbides, promoting BD material diffusion in TiC_x.

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了解 TiCx-钢系统的润湿性和溶解特性

在高温高压下，通过火花等离子烧结（SPS）技术制造了致密的非共沸态 TiC 陶瓷（TiC、TiC、TiC 和 TiC）。在 TiC-45 钢/制动盘 (BD) 材料上使用无柄液滴技术进行了高温接触角测试。研究了温度、陶瓷和钢成分对润湿行为的影响，并探讨了液体渗透过程中的界面反应。结果表明，温度升高和陶瓷 x 值降低会增强 TiC-钢体系的润湿性。TiC-45 钢、TiC-45 钢和 TiC-45 钢体系的润湿机制是由 TiC 和铁形成的溶解效应驱动的。相反，TiC-45 钢的润湿是由形成脆性 FeTi 的反应驱动的。在确定最佳 TiC 成分（x = 0.7）的情况下，谨慎控制 C/Ti 比率对防止形成铁钛至关重要。在高温下，TiC 中的 Ti 原子更有可能与来自 Cr 和 Mo 碳化物的 C 原子结合，从而促进 TiC 中的 BD 材料扩散。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

$International Journal of Refractory Metals & Hard Materials$

International Journal of Refractory Metals & Hard Materials 工程技术-材料科学：综合

CiteScore

7.00

自引率

13.90%

发文量

236

审稿时长

35 days

期刊介绍： The International Journal of Refractory Metals and Hard Materials (IJRMHM) publishes original research articles concerned with all aspects of refractory metals and hard materials. Refractory metals are defined as metals with melting points higher than 1800 °C. These are tungsten, molybdenum, chromium, tantalum, niobium, hafnium, and rhenium, as well as many compounds and alloys based thereupon. Hard materials that are included in the scope of this journal are defined as materials with hardness values higher than 1000 kg/mm2, primarily intended for applications as manufacturing tools or wear resistant components in mechanical systems. Thus they encompass carbides, nitrides and borides of metals, and related compounds. A special focus of this journal is put on the family of hardmetals, which is also known as cemented tungsten carbide, and cermets which are based on titanium carbide and carbonitrides with or without a metal binder. Ceramics and superhard materials including diamond and cubic boron nitride may also be accepted provided the subject material is presented as hard materials as defined above.