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Materials at High Temperatures Volume 38, 2021 - Issue 1
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Research Article

Study on High Temperature Oxidation Characteristics of NbTi Matrix Composites Reinforced with ZrB2 Particles

Zongde LiuKey Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, ChinaCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0001-6082-4587View further author information
ORCID Icon,
Yuan GaoKey Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, ChinaORCID Iconhttps://orcid.org/0000-0003-0590-4802View further author information
ORCID Icon,
Ting WangKey Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, ChinaView further author information
,
Youmei SunKey Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, ChinaView further author information
,
Yan GongKey Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, ChinaView further author information
&
Yao KongKey Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Beijing, ChinaView further author information
Pages 73-81 | Received 02 Jul 2018, Accepted 29 Nov 2020, Published online: 11 Dec 2020
 
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ABSTRACT

The oxidation behavior of NbTi matrix composite reinforced by ZrB2 particles at 800°C-1200°C were investigated. The oxidation kinetic curves of five specimens with different ZrB2 contents (0–60 wt. %) were obtained, and the phase and morphology of oxidized specimens were analyzed by XRD, SEM and EDS. The result showed that both temperature and ZrB2 content have great influence on oxidation resistance of the NbTi-matrix composites. The main oxide was TiNb2O7 when ZrB2 content was 15% and 30%. As the ZrB2 content increased, Nb2Zr6O17 was the predominant oxide. At 800°C and 1000°C, oxide rate reduced due to the formation of Nb2Zr6O17. When temperature reached 1200°C, the volatilization of B2O3 caused many cracks and holes and weakened the protective effect of Nb2Zr6O17.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [11372110].

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