Aluminization and oxidation behavior of titanium nitride between 850° and 1150°C

Huan Te Su*, Chien-Cheng Lin

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The aluminization of TiN carried out isothermally in argon by the pack cementation process at temperatures ranging from 850° to 1150°C can effectively enhance its oxidation resistance. The specimens were subsequently oxidized in air at 1000°C The microstructure of the coatings was investigated using XRD, SEM/EDS, and TEM/EDS. After annealing at 850°C/10 h, the aluminized coating consisted of TiAl3 and AlN. However, the needle-like TiN was additionally formed after annealing above 1000°C Subsequent cyclic oxidation tests indicated that the aluminized TiN with 850°C can dramatically reduce its oxidation rate up to 250 h, while above 1000°C, the time period for improving the oxidation resistance of the aluminized TiN was limited within 25 h. The complex oxides consisted of three layers: an outer TiO2+Al2O3, an intermediate Al2O3-rich and an inner TiO, were formed on the specimens above 1000°C However, the mixed layer of TiO2+Al 2O3 was not found at 850°C.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
Pages2170-2181
Number of pages12
StatePublished - 1 Dec 2010
EventMaterials Science and Technology Conference and Exhibition 2010, MS and T'10 - Houston, TX, United States
Duration: 17 Oct 201021 Oct 2010

Publication series

NameMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
Volume3

Conference

ConferenceMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
CountryUnited States
CityHouston, TX
Period17/10/1021/10/10

Keywords

  • Aluminization
  • Oxidation behavior
  • TiN

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  • Cite this

    Su, H. T., & Lin, C-C. (2010). Aluminization and oxidation behavior of titanium nitride between 850° and 1150°C. In Materials Science and Technology Conference and Exhibition 2010, MS and T'10 (pp. 2170-2181). (Materials Science and Technology Conference and Exhibition 2010, MS and T'10; Vol. 3).