Investigations on the thermal behaviours of SiC-ZrC continuous ceramic fibres

被引：17

作者：

Zhang, Hao ^{[1
,2
]}

Ge, Min ^{[1
]}

Shui, Hongtao ^{[3
]}

Yu, Shouquan ^{[1
]}

Ma, Qing ^{[3
]}

Zhang, Huifeng ^{[1
]}

Ma, Sheng ^{[3
]}

Kong, Weijia ^{[1
]}

Ma, Zhonglie ^{[3
]}

Zhang, Weigang ^{[1
,2
,4
]}

机构：

[1] Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Zhongxing New Mat Technol Co Ltd, Ningbo 315000, Peoples R China

[4] Univ Sci & Technol China, Ganzhou 341000, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2021年 / 41卷 / 09期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Fibres; Silicon carbide; Heat treatment; Oxidation; SILICON-CARBIDE FIBER; HI-NICALON; MICROSTRUCTURE; OXIDATION;

D O I：

10.1016/j.jeurceramsoc.2021.03.009

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：

In this study, nanoscale composite SiC-ZrC ceramic fibres, derived from polyzirconocenecarbosilane (PZCS) via melt spinning, electron beam crosslinking, pyrolysis and sintering were investigated in detail. Compared with several commercial products of second-generation SiC fibres, the produced composite fibres exhibit improved thermal stability, mechanical properties and oxidation resistance. SiC grains in the fibre grew from 9.8 nm to 33.9 nm after annealing in an inert atmosphere at 1800 degrees C for 1 h, as well as decomposition of the SiCxOy phase and the growth of SiC grains affected the mechanical properties of the fibres, and the mechanical properties of the fibres were maintained at 1.1 GPa, accompanied by an increase in the modulus. After the fibres were oxidized at 1100-1400 degrees C for 1 h, a dense oxide layer of SiO2-ZrO2 was formed on the surface of the fibres, which slowed down the rate of further fibre oxidation, thus, the fibres exhibited excellent oxidation resistance.

引用

页码：4689 / 4696

页数：8

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