Improvement of high temperature stability of Pd coating on Nb by intermediate layer comprising NbC and Nb2C
Improvement of high temperature stability of Pd coating on Nb by intermediate layer comprising NbC and Nb2C
复制标题
DOI：
10.1016/j.jallcom.2007.01.101
复制
发表时间：
2007-10
影响因子：
6.2
通讯作者：
Y. Hatano;Keita Ishiyama;H. Homma;Kuniaki Watanabe
中科院分区：
文献类型：
--
作者：
Y. Hatano;Keita Ishiyama;H. Homma;Kuniaki Watanabe
在100 nm的Pd薄膜和Nb衬底之间制备了由NbC和Nb2C组成的无孔中间层，并通过吸氢实验测试了Pd涂层的高温稳定性(573-873K)。这种类型的中间层在673K/以下提供了比仅由Nb2C组成的层更好的Pd涂层稳定性。在773K和873K热处理后，吸氢率分别急剧下降和恢复。对这种复杂的温度依赖性的机理进行了讨论。
Non-porous intermediate layers comprising NbC and Nb2C were prepared between thin Pd films (100nm) and Nb substrates, and the high temperature stability (573–873K) of Pd coating was examined by hydrogen absorption experiments. This type of intermediate layer provided better stability of Pd coating at/below 673K than the layers consisting solely of Nb2C. Sharp reduction and recovery in hydrogen absorption rate were observed after heat treatments at 773 and 873K, respectively. The mechanism underlying such complicated temperature dependence was discussed.