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Matsuda T, Kawabata R, Okamoto T, Hirose A. Ag Sinter Bonding to Si Substrate via Temporal Formation and Decomposition of Ag Carboxylate. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2292. [PMID: 37630877 PMCID: PMC10457783 DOI: 10.3390/nano13162292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/28/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023]
Abstract
This paper demonstrates the in situ sinter bonding of Ag microparticle pastes to a Si substrate via the temporal formation and decomposition of Ag carboxylate on the surface of Ag microparticles. This was proposed via the investigation of Ag sinter bonding using the redox reaction between Ag2O and ethylene glycol, which achieved a bonding strength above 30 MPa even for the bonding temperature at 220 °C. Thermal analysis was used to identify the product of the redox reaction between Ag2O and ethylene glycol and determine the bonding temperature because the final reaction facilitates the interfacial sinter bonding with the substrate. Fourier-transform infrared spectroscopy and nuclear magnetic resonance results indicated the in situ formation of Ag salts of carboxylic acids, such as Ag oxalate on the surface of Ag microparticles. Therefore, the sinter bonding process enabled by the in situ formation and subsequent decomposition of these Ag salts was investigated using Ag microparticles and oxalic acid. Observations of the surface and interfacial morphology of the Ag particles after heating revealed the formation of Ag nanoparticles on the surfaces of the microparticles and the formation of sintering necks between the particles. The bonding experiments demonstrated a significant increase in strength with the addition of oxalic acid to the Ag paste due to the enhanced interfacial sinter bonding with the substrate. The in situ formation and decomposition of Ag salts are promising strategies for improving sintered bonds in electronic devices because they can provide enhanced localized sinter bonding using stable insert materials.
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Affiliation(s)
- Tomoki Matsuda
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan (A.H.)
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Rechnia-Gorący P, Malaika A, Kozłowski M. Effective conversion of rapeseed oil to biodiesel fuel in the presence of basic activated carbon catalysts. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.05.055] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Figueira RB, Callone E, Silva CJR, Pereira EV, Dirè S. Hybrid Coatings Enriched with Tetraethoxysilane for Corrosion Mitigation of Hot-Dip Galvanized Steel in Chloride Contaminated Simulated Concrete Pore Solutions. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E306. [PMID: 28772667 PMCID: PMC5503348 DOI: 10.3390/ma10030306] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 03/08/2017] [Accepted: 03/14/2017] [Indexed: 11/16/2022]
Abstract
Hybrid sol-gel coatings, named U(X):TEOS, based on ureasilicate matrices (U(X)) enriched with tetraethoxysilane (TEOS), were synthesized. The influence of TEOS addition was studied on both the structure of the hybrid sol-gel films as well as on the electrochemical properties. The effect of TEOS on the structure of the hybrid sol-gel films was investigated by solid state Nuclear Magnetic Resonance. The dielectric properties of the different materials were investigated by electrochemical impedance spectroscopy. The corrosion behavior of the hybrid coatings on HDGS was studied in chloride-contaminated simulated concrete pore solutions (SCPS) by polarization resistance measurements. The roughness of the HDGS coated with hybrids was also characterized by atomic force microscopy. The structural characterization of the hybrid materials proved the effective reaction between Jeffamine® and 3-isocyanate propyltriethoxysilane (ICPTES) and indicated that the addition of TEOS does not seem to affect the organic structure or to increase the degree of condensation of the hybrid materials. Despite the apparent lack of influence on the hybrids architecture, the polarization resistance measurements confirmed that TEOS addition improves the corrosion resistance of the hybrid coatings (U(X):TEOS) in chloride-contaminated SCPS when compared to samples prepared without any TEOS (U(X)). This behavior could be related to the decrease in roughness of the hybrid coatings (due TEOS addition) and to the different metal coating interaction resulting from the increase of the inorganic component in the hybrid matrix.
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Affiliation(s)
- Rita B Figueira
- LNEC, National Laboratory for Civil Engineering, Av. do Brasil 101, Lisboa 1700-066, Portugal.
| | - Emanuela Callone
- "Klaus Müller" NMR Laboratory, Department of Industrial Engineering, University of Trento, Via Sommarive, 9, Trento 38123, Italy.
| | - Carlos J R Silva
- Centro de Química, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal.
| | - Elsa V Pereira
- LNEC, National Laboratory for Civil Engineering, Av. do Brasil 101, Lisboa 1700-066, Portugal.
| | - Sandra Dirè
- "Klaus Müller" NMR Laboratory, Department of Industrial Engineering, University of Trento, Via Sommarive, 9, Trento 38123, Italy.
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Sheng B, Xu J, Ge Y, Zhang S, Wang D, Gao C, Ma C, Xu P. Enzymatic Resolution by ad-Lactate Oxidase Catalyzed Reaction for (S)-2-Hydroxycarboxylic Acids. ChemCatChem 2016. [DOI: 10.1002/cctc.201600536] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Binbin Sheng
- State Key Lab of Microbial Technology; Shandong University; 27 Shanda South Road Jinan 250100 China
- School of Environmental Science and Engineering; Sun Yat-sen University, Guangzhou 510275 (China)
| | - Jing Xu
- State Key Lab of Microbial Technology; Shandong University; 27 Shanda South Road Jinan 250100 China
| | - Yongsheng Ge
- State Key Lab of Microbial Technology; Shandong University; 27 Shanda South Road Jinan 250100 China
| | - Shuo Zhang
- State Key Lab of Microbial Technology; Shandong University; 27 Shanda South Road Jinan 250100 China
| | - Danqi Wang
- State Key Lab of Microbial Technology; Shandong University; 27 Shanda South Road Jinan 250100 China
| | - Chao Gao
- State Key Lab of Microbial Technology; Shandong University; 27 Shanda South Road Jinan 250100 China
| | - Cuiqing Ma
- State Key Lab of Microbial Technology; Shandong University; 27 Shanda South Road Jinan 250100 China
| | - Ping Xu
- State Key Laboratory of Microbial Metabolism and; School of Life Sciences and Biotechnology; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 China
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Shen H, Lu X, Jiang KZ, Yang KF, Lu Y, Zheng ZJ, Lai GQ, Xu LW. Dimethylbut-2-ynedioate mediated esterification of acids via sp3 C–N bond cleavage of benzylic tertiary amines. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.08.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kozhevnikov I, Nuzhdin A, Bukhtiyarova G, Martyanov O, Chibiryaev A. Tetramethyl orthosilicate as a sharp-selective catalyst of C3-methylation of indole by supercritical methanol. J Supercrit Fluids 2012. [DOI: 10.1016/j.supflu.2012.05.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Barroso-Bujans F, Serna R, Sow E, Fierro JLG, Veith M. Grafting of poly(acrylic acid) onto an aluminum surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:9094-9100. [PMID: 19591493 DOI: 10.1021/la900518s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Grafting of poly(acrylic acid) (PAA) onto an aluminum surface was successfully achieved by free radical polymerization of acrylic acid using typical radical initiators, benzoyl peroxide and 2,2'-azobisisobutyronitrile. Both spotlike and brush morphologies were achieved. A complete coverage of PAA on an aluminum surface was then achieved by using a thermal chemical vapor deposition process. The PAA thickness was determined by ellipsometry and the superficial chemical composition by X-ray photoelectron spectroscopy (XPS). Grazing angle Fourier transform infrared (FTIR) spectroscopy confirmed the presence of carboxylic acid groups on the surface, and the contact angle measurements revealed a decreasing free surface energy of aluminum due to the polymer surface covering.
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Chighine A, Crosignani S, Arnal MC, Bradley M, Linclau B. Microwave-Assisted Ester Formation Using O-Alkylisoureas: A Convenient Method for the Synthesis of Esters with Inversion of Configuration. J Org Chem 2009; 74:4753-62. [DOI: 10.1021/jo900476y] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alessandra Chighine
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom, and School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Stefano Crosignani
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom, and School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Marie-Claire Arnal
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom, and School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Mark Bradley
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom, and School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Bruno Linclau
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom, and School of Chemistry, University of Edinburgh, Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
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Ansell RJ, Meegan JE, Barrett SA, Warrinner SL. On the interactions of alkyl 2-hydroxycarboxylic acids with alkoxysilanes 2. Complexation and esterification of di- and tricarboxylic acids. Dalton Trans 2009:1460-70. [DOI: 10.1039/b814488e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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