sps制备Mo和Mo - 5ta合金的高温氧化行为

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Philosophical Magazine Letters Pub Date : 2022-10-06 DOI:10.1080/09500839.2022.2129110

Dawei Liu, Jiuxing Zhang, Lei Huang, Song Li, B. Nong, Ying Jin, Yafei Pan

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引用次数: 1

摘要

研究了用sps制备的Mo和Mo - 5ta合金在静态空气条件下，在300-700℃温度范围内0-120 min的高温氧化行为。在500℃的不同氧化时间下，Mo和Mo - 5ta的氧化增重符合抛物线规律，均保持在较低水平。在低温(≤500℃)下，随着Ta的加入，其抗氧化性得到提高。而在600℃和700℃时，Mo-5Ta的氧化加剧，重量增加明显。与纯Mo相比，在500℃氧化过程中，Mo - 5ta合金表面可以快速形成连续致密的氧化皮，提高了合金的抗氧化性。500℃以上挥发的MoO3和生成的Ta2O5使基体中形成更多的空洞，导致合金的抗氧化性变差。

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High-temperature oxidation behaviour of SPS-prepared Mo and Mo–5Ta alloys

ABSTRACT The high-temperature oxidation behaviour of SPS-prepared Mo and Mo–5Ta alloys are investigated under the temperature range 300–700°C for 0–120 min in static air condition. The oxidation weight gains of Mo and Mo–5Ta conform to parabolic law at different oxidation times of 500°C and all remain at low levels. At low temperature (≤ 500°C), the oxidation resistance improves with Ta addition. However, at 600°C and 700°C, the oxidation of Mo–5Ta increases and the weight gain is obvious. Compared with pure Mo, a continuous and dense oxide scale can be formed quickly on the surface of Mo–5Ta alloys during the oxidation process at 500°C, which improves the oxidation resistance of the alloys. The volatile MoO3 and generated Ta2O5 above 500°C cause more voids to form in the matrix, resulting in the deterioration of the oxidation resistance of the alloys.

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来源期刊

Philosophical Magazine Letters 物理-物理：凝聚态物理

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

2.7 months

期刊介绍： Philosophical Magazine Letters is the rapid communications part of the highly respected Philosophical Magazine, which was first published in 1798. Its Editors consider for publication short and timely contributions in the field of condensed matter describing original results, theories and concepts relating to the structure and properties of crystalline materials, ceramics, polymers, glasses, amorphous films, composites and soft matter. Articles emphasizing experimental, theoretical and modelling studies on solids, especially those that interpret behaviour on a microscopic, atomic or electronic scale, are particularly appropriate. Manuscripts are considered on the strict condition that they have been submitted only to Philosophical Magazine Letters , that they have not been published already, and that they are not under consideration for publication elsewhere.