Catalytically Active Oil-based Lubricant Additives Enabled by Calcining Ni-Al Layered Double Hydroxides

Document identifier: oai:DiVA.org:ltu-77248
Access full text here:10.1021/acs.jpclett.9b03094
Keyword: Engineering and Technology, Mechanical Engineering, Tribology (Interacting Surfaces including Friction, Lubrication and Wear), Teknik och teknologier, Maskinteknik, Tribologi (ytteknik omfattande friktion, nötning och smörjning), Machine Elements, Maskinelement
Publication year: 2020
Relevant Sustainable Development Goals (SDGs):
SDG 13 Climate actionSDG 9 Industry, innovation and infrastructureSDG 7 Affordable and clean energy
The SDG label(s) above have been assigned by OSDG.ai

Abstract:

Layered double hydroxides (LDHs) have lately been hailed as robust lubricant additives for improving tribological properties and as ideal catalysts for synthesizing carbon-based nanomaterials. In this paper, in situ analytical tools are used to track the evolution of the crystal structure and chemical composition of LDHs during calcination. Nickel oxide and elemental nickel can be produced by calcining NiAl-LDH in air (LDH-C-Air) and argon (LDH-C-Ar), respectively. For the base oil with 1 wt % LDH-C-Air, negligible wear can be detected even after a 2 h friction test under a severe contact pressure (∼637 MPa). A relatively thick tribofilm (∼60 nm) with a better mechanical property is formed, which protects the solid surface from severe wear. In addition, the possible formed carbon debris may also prevent the direct collision of asperities and effectively improve the wear resistance. This work provides a unique vision for the application of calcined LDHs with the combination of catalysis and tribology.

Authors

Hongdong Wang

Luleå tekniska universitet; Maskinelement; State Key Laboratory of Tribology, Tsinghua University, Beijing, China. Applied Materials Division, Argonne National Laboratory, Argonne, Illinois, United States.
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Yuhong Liu

State Key Laboratory of Tribology, Tsinghua University, Beijing, China.
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Fangmin Guo

X-ray Science Division, Argonne National Laboratory, Argonne, Illinois, United States
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Huaping Sheng

Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois, United States
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Kailun Xia

Department of Chemistry and Center for Nano and Micro Mechanics, Tsinghua University, Beijing, China
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Wenrui Liu

State Key Laboratory of Tribology, Tsinghua University, Beijing, China
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Jianguo Wen

Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois, United States
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Yijun Shi

Luleå tekniska universitet; Maskinelement
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Ali Erdemir

Applied Materials Division, Argonne National Laboratory, Argonne, Illinois, United States
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Jianbin Luo

State Key Laboratory of Tribology, Tsinghua University, Beijing, China
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