AlCrTiMoTa<sub>x</sub>难熔高熵合金的高温抗氧化性能

克力木·吐鲁干; 张瑞阳; 韩杰胜

doi:10.13568/j.cnki.651094.651316.2021.07.01.0001

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AlCrTiMoTa_x难熔高熵合金的高温抗氧化性能

更新时间：2026-01-21

- AlCrTiMoTa_x难熔高熵合金的高温抗氧化性能
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 39, Issue 3, Pages: 369-376(2022)
- 作者机构：
  
  1. 新疆大学机械工程学院
  2. 中国科学院兰州化学物理研究所
- 作者简介：
- 基金信息：
- DOI：10.13568/j.cnki.651094.651316.2021.07.01.0001
  CLC： TG139
- Published：2022
- 稿件说明：
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[1]克力木·吐鲁干,张瑞阳,韩杰胜.AlCrTiMoTa_x难熔高熵合金的高温抗氧化性能[J].新疆大学学报(自然科学版)(中英文),2022,39(03):369-376.
[1]克力木·吐鲁干,张瑞阳,韩杰胜.AlCrTiMoTa_x难熔高熵合金的高温抗氧化性能[J].新疆大学学报(自然科学版)(中英文),2022,39(03):369-376. DOI： 10.13568/j.cnki.651094.651316.2021.07.01.0001.

DOI：10.13568/j.cnki.651094.651316.2021.07.01.0001.

摘要

采用放电等离子烧结技术(SPS)制备了AlCrTiMoTax(x=0.25

0.5

0.75

1)五元难熔高熵合金，通过XRD、SEM和EDS等手段表征了该体系合金的组织结构，并重点考察了其高温抗氧化性能．结果表明：Ta含量与合金的组织结构和抗氧化性能有极大的相关性，随着Ta含量的升高，合金的物相由BCC单相结构转变为多相结构，抗氧化性能逐渐增强．AlCrTiMoTax合金的氧化层均由TiO2、Al_2O3、Cr_2O3和CrTaO4组成，氧化层中的CrTaO4的相对含量与合金的抗氧化性能呈正相关．x=0.75和1时，合金表面能够形成致密的CrTaO4层，并且具有优异的抗氧化性能．

Abstract

In this paper

AlCrTiMoTax(x=0.25

0.5

0.75

1) five-element refractory high entropy alloys were fabricated by spark plasma sintering. The phase composition and microstructure of specimens were characterized by XRD

SEM and EDS

respectively. And oxidation resistance of alloys at high temperature were mainly researched.The results show that a strong correlation exist between Ta content

structure and oxidation resistance. As the content of Ta increases in AlCrTiMoTax

the phase of the alloy changes from a BCC single phase structure to a multiple phase structure of BCC

B2 and Cr_2Ta

and the oxidation resistance of the alloy enhances gradually.The oxide layers of AlCrTiMoTax alloys are both consisted of TiO2

Al_2O3

Cr_2O3 and CrTaO4

and the relative content of CrTaO4 is positively related to the oxidation resistance of the alloy. The dense and continuous CrTaO4oxide layers can be formed on the surface of AlCrTiMoTax(x=0.75 and 1)

which promotes the alloy to have excellent oxidation resistance.

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Keywords

references

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AlCrTiMoTax难熔高熵合金的高温抗氧化性能

DOI：10.13568/j.cnki.651094.651316.2021.07.01.0001

摘要

Abstract

关键词

Keywords

references

AlCrTiMoTa_x难熔高熵合金的高温抗氧化性能