通过放电等离子烧结法烧结的SiC-TiCT MXene复合材料残余应力的建模与表征

Modelling and Characterisation of Residual Stress of SiC-TiCT MXene Composites Sintered via Spark Plasma Sintering Method.

作者信息

Petrus Mateusz, Woźniak Jarosław, Kostecki Marek, Cygan Tomasz, Jastrzębska Agnieszka, Rozmysłowska-Wojciechowska Anita, Adamczyk-Cieślak Bogusława, Moszczyńska Dorota, Sienkiewicz Maksymilian, Marek Piotr, Gertych Arkadiusz P, Zdrojek Mariusz, Olszyna Andrzej

机构信息

Faculty of Material Science and Engineering, Warsaw University of Technology, Woloska 141 St., 02-507 Warsaw, Poland.

Institute of Aeronautics and Applied Mechanics, Warsaw University of Technology, Nowowiejska 24 St., 00-665 Warsaw, Poland.

出版信息

Materials (Basel). 2022 Feb 3;15(3):1175. doi: 10.3390/ma15031175.

DOI:10.3390/ma15031175

PMID:35161116

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8838255/

Abstract

This article presents an attempt to determine the effect of the MXene phase addition and its decomposition during sintering with the use of the spark plasma sintering method on mechanical properties and residual stress of silicon carbide based composites. For this purpose, the unreinforced silicon carbide sinter and the silicon carbide composite with the addition of 2 wt.% of TiCT were tested. The results showed a significant increase of fracture toughness and hardness for composite, respectively 36% and 13%. The numerical study involving this novel method of modelling shows the presence of a complex state of stress in the material, which is related to the anisotropic properties of graphitic carbon structures formed during sintering. An attempt to determine the actual values of residual stress in the tested materials using Raman spectroscopy was also made. These tests showed a good correlation with the constructed numerical model and confirmed the presence of a complex state of residual stress.

摘要

本文尝试通过火花等离子烧结法，确定添加MXene相及其在烧结过程中的分解对碳化硅基复合材料力学性能和残余应力的影响。为此，对未增强的碳化硅烧结体和添加2 wt.% TiCT的碳化硅复合材料进行了测试。结果表明，复合材料的断裂韧性和硬度显著提高，分别提高了36%和13%。涉及这种新型建模方法的数值研究表明，材料中存在复杂的应力状态，这与烧结过程中形成的石墨碳结构的各向异性特性有关。还尝试使用拉曼光谱法确定测试材料中残余应力的实际值。这些测试与构建的数值模型显示出良好的相关性，并证实了残余应力复杂状态的存在。