Effect of the Electrodeposition Temperature on the Cyclic-Oxidation Resistance of Ni Aluminide Containing Zr Formed by Molten-Salt Electrodeposition
Effect of the Electrodeposition Temperature on the Cyclic-Oxidation Resistance of Ni Aluminide Containing Zr Formed by Molten-Salt Electrodeposition
复制标题
电沉积温度对熔盐电沉积含锆铝化镍抗循环氧化性能的影响
DOI：
10.2320/matertrans.mra2008293
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发表时间：
2009
影响因子：
1.2
通讯作者：
T. Narita
中科院分区：
文献类型：
--
作者：
M. Fukumoto;Takashi Suzuki;M. Hara;T. Narita
研究了铝电沉积温度对熔盐电沉积法制备的含锆镍铝化物抗循环氧化性能的影响。采用熔盐电解法沉积ZR和Al。经1073K铝沉积处理的样品，均匀地形成了由Ni2Al3组成的膜层。另一方面，经1073K沉积后的样品，在Ni2Al3层上形成了由Ni2Al3和含Zr的Ni铝化物层组成的膜层。此外，随着电沉积温度的变化，含锆镍铝化物层中的锆含量也发生了变化。在1153K和1173K下电沉积Al时，在Ni铝化物层的表面区几乎没有观察到Zr的存在。循环氧化测试表明，在1073K时，只沉积Al的样品和沉积Zr后再沉积Al的样品由于剥落而发生了质量下降，而在1153和1173K下沉积Zr后再沉积Al的样品没有观察到质量下降。对于这些样品，经过循环氧化试验，在基材上形成了由�-Al_2O_3组成的氧化膜。结果表明，在1153K和1173K条件下，沉积Zr提高了Ni的抗循环氧化性能，随后又沉积了Al[DOI：10.2320/MAT.MRA2008293]。
The effect of the Al electrodeposition temperature on the cyclic oxidation resistance of Ni aluminide containing Zr formed by molten salt electrodeposition was investigated. Zr and Al were deposited by molten salt electrolysis. For the sample treated with the Al deposition at 1073 K, a layer consisting of Ni2Al3 was uniformly formed. On the other hand, for the sample treated by Zr deposition, followed by Al deposition at 1073 K, a layer consisting of Ni2Al3 and a Ni aluminide layer containing Zr on the Ni2Al3 layer were formed. Furthermore, when the Al electrodeposition temperature was changed, the concentration of Zr in the Ni aluminide layer containing Zr changed. When the Al electrodeposition was carried out at 1153 and 1173 K, the Zr was scarcely observed in the surface region of the Ni aluminide layer. The cyclic oxidation test showed that for the sample treated with only the Al deposition and the sample treated with the Zr deposition, followed by Al deposition at 1073 K, a mass reduction due to scale exfoliation took place, whereas for the samples treated with the Zr deposition, followed by Al deposition at 1153 and 1173 K, no mass reduction was observed. For these samples, after the cyclic oxidation test, a scale consisting of � -Al2O3 adhering to the substrate was formed. Consequently, it was found that the cyclic oxidation resistance of Ni was improved by Zr deposition, followed by Al deposition at 1153 and 1173 K. [doi:10.2320/matertrans.MRA2008293]