溅射Ni-Cr-Al-Ti涂层高温氧化过程中组织变化对生成TiO_2的影响

Effect of Microstructural Variation on the TiO_2 Formation on Sputtered Ni-Cr-Al-Ti Coating at High Temperature

摘要:

观察了溅射 Ni- 9.7Cr- 5 .5 Al- 7Ti(质量分数 )纳米晶涂层在高温氧化过程中的组织变化 ,探讨了溅射涂层表面氧化膜以及涂层预氧化 90 min后磨去生成的氧化膜再重新氧化生成氧化膜中 Ti O2 的生长 ,认为溅射涂层氧化过程中 Ni3(Al Ti)相的析出与 Ti O2 的生成长大有着密切关系 ,对两种不同情况下 Ni3(Al Ti)相对 Ti O2 生长的影响机制进行了分析。

Abstract:

Microstructural variation in sputtered Ni 9 7Cr 5 5Al 7Ti (wt%) nanocrystalline coatings during high temperature oxidation was observed. The formation of TiO 2 on sputtered Ni Cr Al Ti coatings (or the sputtered coatings removed oxide coating after 90 min oxidation) have been investigated. It was found that the formation and TiO 2 of growth are closely related to the pricipitation of Ni 3(AlTi) phase. These effects are also discussed in detail