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高熵合金抗高溫氧化機理研究展望
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作者單位:

1.軍事科學(xué)院國防科技創(chuàng)新研究院;2.中國礦業(yè)大學(xué)

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中圖分類號:

TG178

基金項目:

國家重點研發(fā)計劃項目(2018YFC1902400)


High entropy alloys high temperature oxidation mechanism research prospect
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    摘要:

    近年來高熵合金因具有許多優(yōu)于傳統(tǒng)合金的性能備受矚目,而高溫氧化問題大大限制了其發(fā)展應(yīng)用。多元組成使高熵合金的高溫氧化過程不同于單一金屬,不同氧化階段的動力學(xué)規(guī)律有很大不同。氧化前期多種元素發(fā)生氧化反應(yīng),氧化物種類和氧化膜結(jié)構(gòu)隨時間發(fā)生變化,直到穩(wěn)定氧化階段氧化產(chǎn)物才固定存在。本文從初期選擇性氧化、過渡態(tài)氧化和穩(wěn)定氧化期三個階段深入剖析高熵合金高溫氧化各個過程的詳細機理,并總結(jié)相應(yīng)的改善高溫抗氧化性能的方法,為高熵合金材料設(shè)計和性能調(diào)控提供重要的理論依據(jù)。

    Abstract:

    High entropy alloys have been attracting more and more attention in recent years due to performance superior to that of conventional alloys, while the high temperature oxidation limites the application development. Compositionally complex makes the high temperature oxidation process quite different between high entropy alloys and a pure metal. Dynamics of different oxidation periods differ a lot. During the early oxidation stage, several elements undergo oxidation reactions, the spieces of oxide and the structure of scales change with time, and the oxidation products will not become unchanging until the stable oxidation stage. This paper will dissect the detailed mechanism of each oxidation stage during the initial selective oxidation, transition oxidation and stable oxidation, and summarise corresponding approaches to improve antioxidation, hence providing theoretical reference for material design and performance control of high entropy alloys.

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王鑫,萬藝興,莫金勇,胡振峰.高熵合金抗高溫氧化機理研究展望[J].稀有金屬材料與工程,2021,50(8):2986~2992.[wang xin, wan yixing, mo jinyong, hu zhenfeng. High entropy alloys high temperature oxidation mechanism research prospect[J]. Rare Metal Materials and Engineering,2021,50(8):2986~2992.]
DOI：10.12442/j. issn.1002-185X.20200585

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  • 收稿日期:2020-08-09
  • 最后修改日期:2020-08-19
  • 錄用日期:2020-09-18
  • 在線發(fā)布日期: 2021-09-07
  • 出版日期: 2021-08-31