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采用熔剂法对0Cr18Ni10Ti热浸镀铝。通过高温热重分析仪对热浸镀铝试样、热浸镀铝经扩散退火处理后的试样及0Cr18Ni10Ti不锈钢试样900℃×24h短期氧化行为进行了研究,采用EDS、SEM对截面进行了能谱分析及形貌观察,利用XRD对表面进行了物相分析。研究结果表明,热浸镀铝经950℃×2 h高温扩散试样及不锈钢900℃×24 h氧化动力学曲线均符合抛物线规律,热浸镀铝经950℃×2 h高温扩散提高了0Cr18Ni10Ti不锈钢的抗高温氧化性,Fe Al金属间化合物具有较好的抗高温氧化性能。热浸镀铝未经950℃×2h高温扩散,试样表层富铝层较疏松。
Using flux method on 0Cr18Ni10Ti hot-dip aluminum. The hot-dip aluminized samples, the hot-dip aluminized samples after diffusion annealing and the short-term oxidation behavior of 0Cr18Ni10Ti stainless steel samples at 900 ℃ × 24h were studied by high temperature thermogravimetric analyzer. The cross-sections were studied by EDS and SEM Energy spectrum analysis and morphology observation, the use of XRD on the surface of the phase analysis. The results show that the oxidation kinetics curves of hot-dip aluminized steel at 950 ℃ × 2 h and 900 ℃ × 24 h of the hot-dip aluminized aluminum all conform to the parabolic law. The hot-dip aluminized aluminum increases the diffusion of 0Cr18Ni10Ti stainless steel at 950 ℃ × 2 h Of the high temperature oxidation resistance, FeAl intermetallic compounds have good high temperature oxidation resistance. Hot-dip aluminized without 950 ℃ × 2h high-temperature diffusion, the surface of the sample is more loose aluminum-rich layer.