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Wang Q, Tao J, Shan H, Cui T, Ding J, Wang J. Effect of Heat Treatment under Different Atmospheres on the Bonding Properties and Mechanism of Ceramiziable Heat-Resistant Adhesive. Polymers (Basel) 2024; 16:557. [PMID: 38399936 PMCID: PMC10892300 DOI: 10.3390/polym16040557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/12/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
In this study, a heat-resistant adhesive was prepared using molybdenum-phenolic (Mo-PF) resin as the matrix and TiB2 particle as the ceramizable filler for bonding Al2O3 ceramic substrates. Firstly, Fourier transform infrared (FTIR) was used to characterize the chemical structure of the Mo-PF. Subsequently, thermo gravimetric analysis (TGA) and shear strength testing were employed to investigate the effects of heat treatment in different atmospheres on the thermal stability and residual bonding properties of the adhesive. To further explore the bonding mechanism of the adhesive after heat treatment in different atmospheres, scanning electron microscopy (SEM), compressive strength testing, and X-ray diffraction (XRD) were utilized to analyze the microstructure, mechanical strength, and composition evolution of the adhesive at different temperatures. The bonding strength of Al2O3 joints showed a trend of initially decreasing and then increasing after different temperature heat treatment in air, with the shear strength reaching a maximum value of 25.68 MPa after treatment at 1200 °C. And the bonding strength of Al2O3 joints decreased slowly with the increase of temperature in nitrogen. In air, the ceramicization reaction at a high temperature enabled the mechanical strength of the adhesive to rise despite the continuous pyrolysis of the resin. However, the TiB2 filler in nitrogen did not react, and the properties of the adhesive showed a decreasing tendency with the pyrolysis of the resin.
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Affiliation(s)
- Qingke Wang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (Q.W.)
| | - Jiadong Tao
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (Q.W.)
| | - Huawei Shan
- System Design Institute of Hubei Aerospace Technology Academy, Wuhan 430040, China
| | - Tangyin Cui
- Shandong Industrial Ceramics Research and Design Institute Co., Ltd., Zibo 255100, China
| | - Jie Ding
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (Q.W.)
| | - Jianghang Wang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; (Q.W.)
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A phase field model for the solid-state sintering with parametric proper generalized decomposition. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Deferm C, Malaquias JC, Onghena B, Banerjee D, Luyten J, Oosterhof H, Fransaer J, Binnemans K. Electrodeposition of indium from the ionic liquid trihexyl(tetradecyl)phosphonium chloride. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2019; 21:1517-1530. [PMID: 31303860 PMCID: PMC6592163 DOI: 10.1039/c8gc03389g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 01/23/2019] [Indexed: 06/10/2023]
Abstract
The electrochemical behavior of indium in the ionic liquid trihexyl(tetradecyl)phosphonium chloride (Cyphos IL 101) was studied. Cyphos IL 101 first had to be purified, as the impurities present in commercial Cyphos IL 101 interfered with the electrochemical measurements. Electrochemical deposition of indium metal from this electrolyte occurs without hydrogen evolution, increasing the cathodic current efficiency compared to deposition from water and avoiding porosity within the deposited metal. Indium(iii) is the most stable oxidation state in the ionic liquid. This ion is reduced in two steps, first from indium(iii) to indium(i) and subsequently to indium(0). The high thermal stability of Cyphos IL 101 allowed the electrodeposition of indium at 120 °C and 180 °C. At 180 °C indium was deposited as liquid indium which allows for the easy separation of the indium and the possibility to design a continuous electrowinning process. On molybdenum, indium deposits as liquid droplets even below the melting point of indium. This was explained by the combination of melting point depression and undercooling. The possibility to separate indium from iron and zinc by electrodeposition was tested. It is possible to separate indium from zinc by electrodeposition, but iron deposits together with indium.
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Affiliation(s)
- Clio Deferm
- KU Leuven , Department of Chemistry , Celestijnenlaan 200F , bus 2404 , B-3001 Heverlee , Belgium .
- Umicore , Group Research & Development , Competence Area Recycling and Extraction Technologies , Watertorenstraat 33 , B-2250 Olen , Belgium
| | - João C Malaquias
- KU Leuven , Department of Materials Engineering , Kasteelpark Arenberg 44 , bus 2450 , B-3001 Heverlee , Belgium
| | - Bieke Onghena
- KU Leuven , Department of Chemistry , Celestijnenlaan 200F , bus 2404 , B-3001 Heverlee , Belgium .
| | - Dipanjan Banerjee
- Dutch-Belgian Beamline (DUBBLE) , ESRF - The European Synchrotron , CS 40220 , 38043 Grenoble Cedex 9 , France
| | - Jan Luyten
- Umicore , Group Research & Development , Competence Area Recycling and Extraction Technologies , Watertorenstraat 33 , B-2250 Olen , Belgium
| | - Harald Oosterhof
- Umicore , Group Research & Development , Competence Area Recycling and Extraction Technologies , Watertorenstraat 33 , B-2250 Olen , Belgium
| | - Jan Fransaer
- KU Leuven , Department of Materials Engineering , Kasteelpark Arenberg 44 , bus 2450 , B-3001 Heverlee , Belgium
| | - Koen Binnemans
- KU Leuven , Department of Chemistry , Celestijnenlaan 200F , bus 2404 , B-3001 Heverlee , Belgium .
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Sushko GB, Verkhovtsev AV, Kexel C, Korol AV, Schramm S, Solov'yov AV. Reconciling simulated melting and ground-state properties of metals with a modified embedded-atom method potential. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:145201. [PMID: 26977922 DOI: 10.1088/0953-8984/28/14/145201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We propose a modification of the embedded-atom method-type potential aiming at reconciling simulated melting and ground-state properties of metals by means of classical molecular dynamics. Considering titanium, magnesium, gold, and platinum as case studies, we demonstrate that simulations performed with the modified force field yield quantitatively correctly both the melting temperature of the metals and their ground-state properties. It is shown that the accounting for the long-range interatomic interactions noticeably affects the melting point assessment. The introduced modification weakens the interaction at interatomic distances exceeding the equilibrium one by a characteristic vibration amplitude defined by the Lindemann criterion, thus allowing for the correct simulation of melting, while keeping its behavior in the vicinity of the ground state minimum. The modification of the many-body potential has a general nature and can be applicable to metals with different characteristics of the electron structure as well as for many different molecular and solid state systems experiencing phase transitions.
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