谭晓晓.CeO<sub>2</sub>改善低温渗铝涂层抗氧化性能的研究[J].稀有金属材料与工程,2019,48(6):1785~1790.[Xiaoxiao Tan.Improved oxidation resistance of a CeO<sub>2</sub>-midifed aluminide coating by low-temperature pack cementation[J].Rare Metal Materials and Engineering,2019,48(6):1785~1790.]
CeO<sub>2</sub>改善低温渗铝涂层抗氧化性能的研究
投稿时间:2018-09-09  修订日期:2018-09-30
中文关键词:  铝化物涂层  氧化  包埋渗铝  稀土元素效应
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:
      在Ni基体上电沉积纯Ni镀层和Ni-CeO2复合镀层并对其进行620 °C低温渗铝,制备了无CeO2和CeO2改性的铝化物涂层。将以上两种涂层在1000 °C下氧化,研究CeO2颗粒的加入对氧化膜的生长速率和粘附性能的影响。结果表明,在δ-Ni2Al3涂层中加入纳米CeO2颗粒可以推迟一层完整α-Al2O3膜的形成时间,降低氧化膜的生长速率。此外,纳米CeO2颗粒的加入提高了氧化膜的粘附性,原因是与没有CeO2掺杂的涂层相比,CeO2改性铝化物涂层在氧化膜/涂层界面上形成的空洞尺寸较小。
Improved oxidation resistance of a CeO<sub>2</sub>-midifed aluminide coating by low-temperature pack cementation
英文关键词:Aluminide coating  Oxidation  Pack cementation  Reactive element effect (REE)
英文摘要:
      CeO2-free and CeO2-modified aluminide coatings were prepared by aluminizing pure Ni film and Ni-CeO2 film on Ni plate at 620°C, respectively. The effect of the CeO2 addition on the growth rate and adhesion of the alumina scale was investigated at 1000 °C. The results show that the addition of nanometer CeO2 in aluminide coating of δ phase delayed the formation of a continuous α-Al2O3 scale and decreased the growth rate of alumina scale during oxidation. Moreover, the alumina scale adhesion was improved by the addition of nanometer CeO2 due to the smaller cavities formed at the alumina scale/coating interface compared with the CeO2-free one.
作者单位E-mail
谭晓晓 上海工程技术大学材料工程学院 xxtan@sues.edu.cn 
摘要点击次数: 116
全文下载次数: 61
查看全文  查看/发表评论  
关闭