TY - JOUR
T1 - Novel laser additive-manufactured Mo-based composite with enhanced mechanical and oxidation properties
AU - Zhou, Weiwei
AU - Kikuchi, Keiko
AU - Nomura, Naoyuki
AU - Yoshimi, Kyosuke
AU - Kawasaki, Akira
N1 - Funding Information:
The authors would like to thank Dr. Takamichi Miyazaki and Dr. Kosei Kobayashi for the TEM observations at Tohoku University. We also appreciated beneficial discussions with Dr. Yuanyuan Lu and Mr. Ryuichi Miyata at Tohoku University.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/4/5
Y1 - 2020/4/5
N2 - A novel Mo-based composite with simultaneously improved mechanical and oxidation properties was fabricated by laser powder bed fusion (L-PBF), using uniform Al2O3-nanoparticle-decorated MoTiAl powders bridged by functionalized carbon nanotubes. A tight ceramic coating ∼2.57 μm in thickness consisting of an α-Al2O3 matrix with dispersed TiC particles was formed on the surface of the Al2O3-CNT/MoTiAl composite, which has been proved to effectively increase resistance to oxidation at 1173 K. Meanwhile, the nanoparticles were homogenously dispersed and tightly contacted with the matrix, giving rise to an enhanced Vickers hardness. This work shed light on designing and producing high-performance Mo-based composites for application to ultrahigh-temperature materials.
AB - A novel Mo-based composite with simultaneously improved mechanical and oxidation properties was fabricated by laser powder bed fusion (L-PBF), using uniform Al2O3-nanoparticle-decorated MoTiAl powders bridged by functionalized carbon nanotubes. A tight ceramic coating ∼2.57 μm in thickness consisting of an α-Al2O3 matrix with dispersed TiC particles was formed on the surface of the Al2O3-CNT/MoTiAl composite, which has been proved to effectively increase resistance to oxidation at 1173 K. Meanwhile, the nanoparticles were homogenously dispersed and tightly contacted with the matrix, giving rise to an enhanced Vickers hardness. This work shed light on designing and producing high-performance Mo-based composites for application to ultrahigh-temperature materials.
KW - Carbon nanotubes
KW - Laser powder bed fusion (L-PBF)
KW - Mechanical property
KW - Metal matrix composites (MMCs)
KW - Oxidation resistance
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U2 - 10.1016/j.jallcom.2019.152981
DO - 10.1016/j.jallcom.2019.152981
M3 - Article
AN - SCOPUS:85077965862
SN - 0925-8388
VL - 819
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 152981
ER -