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Effects of Nb2O5Content on Structure and Mechanical Properties of Fe/FeAl2O4Cermet AITranslate

ZHANG Fu-shun; HAN Zhi-yuan; ZHOU Ai-hua; JIANG Shi-chen
Materials and Metallurgy School,Inner Mongolia University of Science and Technology;Materials and Metallurgy School,Inner Mongolia University of Science and Technology;Materials and Metallurgy School,Inner Mongolia University of Science and Technology;Materials and Metallurgy School,Inner Mongolia University of Science and Technology
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

Using Bayan Obo iron concentrate and Al2O3powder as the main raw materials,Fe and FeAl2O4were generated in situ by controllable carbothermal reduction of iron concentrate and sintered at high temperature under normal pressure to prepare Fe/FeAl2O4cermet.The effects of Nb2O5,content on the properties and microstructure of the cermet were discussed.The results show that the two phases in the prepared cermet are uniformly distributed.The addition of Nb2O5can both activate the surface/interface of the cermet particles to facilitate sintering and promote the formation of columnar micro-nano crystals in the ceramic phase.When the content of Nb2O5,is 2%,the mechanical properties can be significantly improved,and the Vickers hardness and bending strength of the cermet under the optimized conditions reach 596 MPa and 132 MPa,respectively.At this time,the fracture of the cermet belongs to ductile fracture.The research can provide a process route for the low-cost preparation of cermet and fully utilize the unique key strategic element niobium resources of Bayan Obo mine.

KeyWords AITranslate

Bayan Obo iron concentrate FeAl2O4 cermet Nb2O5 comprehensive utilization

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Basic Information:

DOI：

Chinese Library Classification Number:TB33[一般工业技术—材料科学与工程]

Citation Information:

Using Bayan Obo iron concentrate and Al2O3powder as the main raw materials,Fe and FeAl2O4were generated in situ by controllable carbothermal reduction of iron concentrate and sintered at high temperature under normal pressure to prepare Fe/FeAl2O4cermet.The effects of Nb2O5,content on the properties and microstructure of the cermet were discussed.The results show that the two phases in the prepared cermet are uniformly distributed.The addition of Nb2O5can both activate the surface/interface of the cermet particles to facilitate sintering and promote the formation of columnar micro-nano crystals in the ceramic phase.When the content of Nb2O5,is 2%,the mechanical properties can be significantly improved,and the Vickers hardness and bending strength of the cermet under the optimized conditions reach 596 MPa and 132 MPa,respectively.At this time,the fracture of the cermet belongs to ductile fracture.The research can provide a process route for the low-cost preparation of cermet and fully utilize the unique key strategic element niobium resources of Bayan Obo mine.

quote

GB/T 7714-2015 [1] ZHANG Fu-shun, HAN Zhi-yuan, ZHOU Ai-hua, et al. Effects of Nb2O5Content on Structure and Mechanical Properties of Fe/FeAl2O4Cermet[J]. Rare Metals and Cemented Carbides, 2023(2): 73-77.
MLA [1] ZHANG Fu-shun, et al., "Effects of Nb2O5Content on Structure and Mechanical Properties of Fe/FeAl2O4Cermet." Rare Metals and Cemented Carbides, no. 2, 2023, pp. 73-77.
APA [1] ZHANG Fu-shun, HAN Zhi-yuan, ZHOU Ai-hua, & JIANG Shi-chen. (2023). Effects of Nb2O5Content on Structure and Mechanical Properties of Fe/FeAl2O4Cermet. Rare Metals and Cemented Carbides(2), 73-77.
IEEE [1] ZHANG Fu-shun, HAN Zhi-yuan, ZHOU Ai-hua, and JIANG Shi-chen, "Effects of Nb2O5Content on Structure and Mechanical Properties of Fe/FeAl2O4Cermet," Rare Metals and Cemented Carbides, no. 2, pp. 73-77, 2023. keywords: {Bayan Obo iron concentrate;FeAlO;cermet;NbO;comprehensive utilization}