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Tribological Behavior of Hafnium Diboride Based Material
Transactions of the Indian Ceramic Society, 2020Tribological behavior of hot pressed HfB2-5%TiSi2 composite was studied under reciprocative sliding condition using cemented tungsten carbide (WC-Co) ball as counter body.
Jitendra Kumar Sonber +3 more
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Heteroepitaxy of Hafnium Diboride on a Hafnium(0001) Single Crystal Surface
Chemistry of Materials, 1997A novel heteroepitaxial structure is formed between the metallic hard material hafnium diboride and a hafnium single-crystal substrate. The film is formed by chemical vapor deposition of boron at 750 °C using diborane gas and is characterized with X-ray photoelectron spectroscopy, low-energy electron diffraction, and X-ray diffraction.
Michael Belyansky, Michael Trenary
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Nanowear of Hafnium Diboride Thin Films
Tribology Transactions, 2010Chemical Vapor Deposition-grown HfB2 films were subjected to nanowear testing at normal loads of 50–500 μN. The material response was investigated by measuring residual wear depths and wear scar roughness and by calculating wear rates and specific energies.
Abhishek Chatterjee +4 more
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A new chemresistive NO2 sensing material: Hafnium diboride
Ceramics International, 2022Abstract While metal oxides and metal sulfides have been extensively studied for gas sensing applications, there are no extensive reports on gas sensing properties of metal diborides. Here, for the first time, we have investigated the conductometric gas sensing behavior of HfB2 nanoparticles. The HfB2 nanoparticles is synthesized via a sol-gel method
Sikai Zhao +8 more
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Direct Writing of Sub-5 nm Hafnium Diboride Metallic Nanostructures
ACS Nano, 2010Sub-5 nm metallic hafnium diboride (HfB(2)) nanostructures were directly written onto Si(100)-2 × 1:H surfaces using ultrahigh vacuum scanning tunneling microscope (UHV-STM) electron beam induced deposition (EBID) of a carbon-free precursor molecule, tetrakis(tetrahydroborato)hafnium, Hf(BH(4))(4).
Scott R Daly +2 more
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Structure and composition of hafnium diboride films
Inorganic Materials, 2011The structure and composition of hafnium diboride films grown by rf magnetron sputtering have been studied by X-ray diffraction and secondary ion mass spectrometry. The results demonstrate that the key parameters of the process are the bias-dependent energy of incident particles and the substrate temperature.
A. A. Goncharov +3 more
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Transactions of the Kоla Science Centre of RAS. Series: Engineering Sciences, 2023
The effect of calcium hexaboride on the interaction of HfB2 and TaB2 with iridium was studied as a function of temperature and the ratio of initial reagents. It is shown that the replacement of half of the transition metal diboride by CaB6, as well as an increase in temperature, lead to a significant change in the phase composition of the products.
Victor V. Lozanov, Natalia I. Baklanova
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The effect of calcium hexaboride on the interaction of HfB2 and TaB2 with iridium was studied as a function of temperature and the ratio of initial reagents. It is shown that the replacement of half of the transition metal diboride by CaB6, as well as an increase in temperature, lead to a significant change in the phase composition of the products.
Victor V. Lozanov, Natalia I. Baklanova
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On the borothermic preparation of titanium, zirconium and hafnium diborides
Journal of the Less Common Metals, 1968Abstract The formation of titanium, zirconium and hafnium diborides by reaction between metal dioxides and elemental boron in vacuum in the temperature range 1000 °–1750 °C has been investigated. It has been established that titanium diboride with a composition close to that of stoichiometric TiB2 is obtained after a heattreatment of the reactants at
P. Peshev, G. Bliznakov
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Solid-State Synthesis and Characterization of Hafnium Diboride Nanoparticles
Journal of Superhard Materials, 2020Hafnium diboride (HfB2) nanoparticles have been prepared by a solid-state reaction of hafnium dioxide (HfO2), metallic magnesium (Mg) and sodium borohydride (NaBH4) at 700°C in an autoclave. The structure and morphology of the obtained product are investigated by X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and scanning ...
null Liangbiao Wang +9 more
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Synthesis of Hafnium Diboride Ceramic Powders by Carbothermal Reduction
Glass and Ceramics (English Translation of Steklo I Keramika)N E Shchegoleva, A S Chainikova
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