Preparation of Nb2AlC coating by DC magnetron sputtering and subsequent annealing

Preparation of Nb2AlC coating by DC magnetron sputtering and subsequent annealing
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直流磁控溅射制备Nb2AlC涂层及后续退火

DOI:
10.1016/j.ceramint.2017.02.033
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发表时间:
2017-06
影响因子:
5.2
通讯作者:
Meishuan Li
Meishuan Li
中科院分区:
材料科学1区
文献类型:
--
作者:
Yueming Li;Yuhai Qian;Guorui Zhao;Jingjun Xu;Meishuan Li

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采用两步法在多晶 Al2O3 上沉积 Nb2AlC 涂层。首先,在室温下通过直流磁控溅射从 Nb2AlC 化合物靶上沉积非晶态 Nb-Al-C 涂层,然后通过随后在 800 °C 的氩气中退火获得晶态 Nb2AlC 涂层。溅射沉积中Nb2AlC晶体的形成温度远低于热压沉积中的形成温度。多晶涂层呈现出具有任意取向的纳米尺寸晶粒。采用 XRD、拉曼光谱、SEM 和 TEM 对涂层的成分和微观结构进行了表征。
An Nb2AlC coating was deposited on polycrystalline Al2O3by a two-step method. Firstly, an amorphous Nb-Al-C coating was deposited by DC magnetron sputtering at room temperature from an Nb2AlC compound target, and then a crystalline Nb2AlC coating was obtained by subsequent annealing at 800 °C in Ar. The formation temperature of crystalline Nb2AlC in sputtering deposition was much lower than in hot pressing. The polycrystalline coating exhibited nano-size grains with arbitrary orientation. XRD, Raman spectroscopy, SEM and TEM were used to characterize the components and microstructures of the coatings.
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