Cryomilling and Characterization of Ti/Al2O3 Powders

Jun Yan Wu; Qian Liu; Zhi Hao Wang; Zhi Wang

doi:10.4028/www.scientific.net/SSP.281.285

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HomeSolid State PhenomenaSolid State Phenomena Vol. 281Cryomilling and Characterization of Ti/Al2O3...

Cryomilling and Characterization of Ti/Al₂O₃ Powders

Abstract:

In order to prevent the oxidation of Ti, which ultimately leads to the generation of intermetallic compound Ti₃Al, a new method of cryomill in liquid nitrogen was used to deal with the Ti/Al₂O₃ powders. The size distribution, phase composite and microstructure of the powders were analyzed using laser particle size analyzer, XRD, and TEM, respectively. Then, the performances of Ti/Al₂O₃ cermet sintered using cryomilled powders and room temperature milled powders were compared. The results show that, with the increase of cryomilling time, the grain size decreases shapely and high reactivitive nanoscale powders are finally obtained. With the cryomilling in liquid nitrogen, the Ti-N bonds are formed, which successfully prevent the oxidation of Ti. Ti/Al₂O₃ cermet sintered using cryomilled powders shows higher density, better mechanical properties than that using RT milled powders.

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Periodical:

Solid State Phenomena (Volume 281)

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285-290

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.281.285

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Online since:

August 2018

Authors:

Jun Yan Wu*, Qian Liu, Zhi Hao Wang, Zhi Wang

Keywords:

Cryomilling, Ti/Al₂O₃ Cermet, Ti-Al Intermetallic

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