Properties of TiC Reinforced Ti-Composites Synthesized in Situ by Microwave Sintering

被引：0

作者：

Hu M. ^{[1
]}

Ouyang D. ^{[1
]}

Cui X. ^{[1
]}

Du H. ^{[2
]}

Xu Y. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang

[2] Jiangxi Normal University

来源：

Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2021年 / 35卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Composites; In situ synthesis; Microwave sintering; TiC; TiC reinforced titanium composites;

D O I：

10.11901/1005.3093.2020.166

中图分类号：

学科分类号：

摘要：

Novel TiC reinforced Ti-based composites were synthesized via in situ microwave sintering with nanotubes (MWCNTs) and pure Ti as raw materials. The properties of the composites were investigated, and the formation mechanism of TiC reinforced phase of the composites was discussed. The results show that TiC reinforced phase could be generated in-situ in the Ti-matrix during microwave sintering. When the addition amount of MWCNTs <1% (in mass fraction), the formed TiC was granular-like and distributed uniformly in the dense Ti matrix of fine grains. When the addition amount of MWCNTs >1.5%, the formed TiC turns to be of dendritic morphology, while the Ti matrix is coarsened and the composite becomes porous. Sequentially, the wear mechanism of the composites will change from adhesive wear to abrasive wear due to the addition of MWCNTs. With the increasing addition amount of MWCNTs the microhardness of the composite increases firstly and then decreases. When the addition amount of MWCNTs is 1%, the acquired composite presents a higher microhardness of about 527HV and better wear resistance with the friction coefficient of about 0.35, which are 1.2 times more and 0.4 less than the corresponding terms of the pure Ti respectively. © 2021, Editorial Office of Chinese Journal of Materials Research. All right reserved.

引用

页码：277 / 283

页数：6

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