Scratch behavior of boron nitride nanotube/boron nitride nanoplatelet hybrid reinforced ZrB2-SiC composites

被引：11

作者：

Chen, Y. ^{[1
]}

Zhao, D.

Qi, F.

Liu, W. W.

机构：

[1] Soochow Univ, Sch Mech & Elect Engn, Suzhou 215123, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷 / 03期

基金：

中国国家自然科学基金;

关键词：

A; Sintering; B; Nanocomposites; C. Wear resistance; C. Mechanical properties; D; Borides; MECHANICAL-PROPERTIES; GRAPHITE FLAKE; TEMPERATURE; GRAPHENE; INDENTATION;

D O I：

10.1016/j.ceramint.2017.11.100

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Spherical instrumented scratch behavior of ZrB2-SiC composites with and without hybrid boron nitride nano tubes (BNNTs) and boron nitride nanoplatelets (BNNPs) was investigated in this research. Typical brittle fracture such as microcracks both in and beyond the residual groove and grain dislodgement was observed in ZrB2-SiC composite, while hybrid BN nanofiller reinforced ZrB2-SiC composite exhibited predominantly ductile deformation. The peculiar three-dimensional hybrid structure in which BNNPs retain their high specific surface area and de-bundled BNNTs extend as tentacles contributes to the improved tolerance to brittle damage. Additionally, easier grain sliding due to BN hybrid nanofillers located at grain boundaries and these BN hybrid nanofillers attached on the scratch surface would provide significant self-lubricating effect to reduce lateral force during scratch and to alleviate contact damage.

引用

页码：3277 / 3281

页数：5

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