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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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扩散铝涂层的制备及其gamma--TiAl基体的防护
, PP. 355-360
Abstract:
采用电弧离子镀在g-TiAl基体上镀铝后进行扩散处理制备出了扩散铝涂层，涂层与基体结合良好。EDX和XRD分析表明涂层由很厚的TiAl3外层和较薄的TiAl2内层构成。900oC空气中的恒温氧化试验结果显示，g-TiAl氧化后生成了疏松多层的Ti和Al氧化物的混合物，其抗高温氧化性能很差，施加扩散铝涂层后，高温下生成了一层连续致密的Al2O3膜，抗氧化性能显著提高。讨论了涂层的氧化和退化机制。
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