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高温氧化是钒合金作为聚变堆结构材料的一个主要可行性问题。本文就该种合金在氩气氛中的高温氧化行为开展实验研究和理论分析,以求得到该合金的氧化物成长规律和对温度的依赖关系。氧化实验所用材料为V-4Cr-4Ti合金。氧化样品尺寸为5×6mm~2,厚度2mm。实验前,样品表面经精磨抛光和超声清洁处理。氧化实验是在流动的氩气中进行的。氩气流速约为每小时15L,氩气纯度优于99.99％,其中氧气含量为6.7和12vppm。氧化温度为450℃～600℃,实验周期8h。实验过程中在
High-temperature oxidation is one of the main practical issues for vanadium alloys as a material for fusion reactor structures. In this paper, the experimental study and theoretical analysis of the high temperature oxidation behavior of the alloy in argon atmosphere were carried out in order to obtain the growth law of the oxide and the temperature dependence of the alloy. The material used for the oxidation experiment was V-4Cr-4Ti alloy. Oxidation sample size of 5 × 6mm ~ 2, thickness 2mm. Before the experiment, the surface of the sample was polished and cleaned by ultrasonic cleaning. Oxidation experiments were carried out in flowing argon. Argon flow rate of about 15L per hour, argon purity of better than 99.99%, with oxygen content of 6.7 and 12vppm. The oxidation temperature is 450 ℃ ~ 600 ℃, the experimental period is 8h. During the experiment