A study on the growth kinetics of CeO2-modified aluminide coating and its computer fitting

作者：Wen Jiuba^*; Yang Liusong; Zhu Limin; Zhang Jinmin; Li Quan An

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2009, 499(1-2): 123-125.

DOI：10.1016/j.msea.2007.11.139

• Pack cementation
• Electro-deposition
• CeO2-modified
• Computer fitting
• Growth kinetics

A CeO2-modified aluminide coating was obtained by composite electro-deposition Ni and CeO2 particles on 20 steel with different holding time using pack cementation. The growth kinetics curve was given with computer fitting by measuring the thickness of the layer. Scanning electronic microscopy and X-ray energy dispersive spectrometry were used to analyze the microstructure and components of the layer. The results showed that the content of CeO2 was up to 5.21 wt.% in the rich area of NiAl coatings, which restrain the interdiffusion between the coating and the base during the oxidation process at high temperature. Meanwhile, the growth curve obtained could offer an important basis to forecasting and controlling the depth of the coating.

• 出版日期2009-1-15
• 单位河南大学