Effect of Nitrogen on High Temperature Oxidation Behavior of AlN-doped Gradient Coating
Effect of Nitrogen on High Temperature Oxidation Behavior of AlN-doped Gradient Coating
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DOI：
10.1016/j.corsci.2022.110155
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发表时间：
2022-02
影响因子：
8.3
通讯作者：
Yingfei Yang;Qin Xiao;Lanlan Yang;Pan Ren;Wei Li;Shenglong Zhu;Fu-hui Wang
中科院分区：
文献类型：
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作者：
Yingfei Yang;Qin Xiao;Lanlan Yang;Pan Ren;Wei Li;Shenglong Zhu;Fu-hui Wang
采用反应磁控溅射法制备了三种氮化物掺杂梯度涂层。讨论了氮化物对氧化性能的影响。随着氮化物含量的增加，NiCrAlYHfSi、GC 1、GC 2和GC 3涂层氧化24 h后的增重分别达到0.306、0.333、0.463和0.979 mg/cm 2。结果表明，氮化物的存在抑制了Al_2O_3的θ→α转变，提高了涂层的氧化速率，但降低了氧化膜中的残余应力。氮化物的过量掺杂对涂层不利，适当的掺杂量对涂层的性能至关重要。
Three nitrides-doped gradient coatings were manufactured by reactive magnetron sputtering. The influence of nitrides on the oxidation performance was discussed. As the nitrides content increased, the weight gain of NiCrAlYHfSi, GC1, GC2 and GC3 coatings reached 0.306, 0.333, 0.463 and 0.979 mg/cm2after 24 h of oxidation. It was found that the present of nitrides could inhibit the θ→α transition of Al2O3, and increased the oxidation rate of coatings but the residual stress in oxide scale is reduced accordingly. Excessive doping of nitrides is detrimental to coatings, a proper doping amount is critical to the performance of coating.