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Zhu P, Zhang Q, Xia Y, Sun K, Lin X, Gou H, Shil’ko S, Wu G. Effect of Nanoscale W Coating on Corrosion Behavior of Diamond/Aluminum Composites. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:307. [PMID: 36678061 PMCID: PMC9864591 DOI: 10.3390/nano13020307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/07/2023] [Accepted: 01/08/2023] [Indexed: 06/17/2023]
Abstract
The stability of diamond/aluminum composite is of significant importance for its extensive application. In this paper, the interface of diamond/aluminum composite was modified by adding nanoscale W coating on diamond surface. We evaluated the corrosion rate of nanoscale W-coated and uncoated diamond/aluminum composite by a full immersion test and polarization curve test and clarified the corrosion products and corrosion mechanism of the composite. The introduction of W nanoscale coating effectively reduces the corrosion rate of the diamond/aluminum composite. After corrosion, the bending strength and thermal conductivity of the nanoscale W-coated diamond/aluminum composite are considerably higher than those of the uncoated diamond/aluminum composite. The corrosion loss of the material is mainly related to the hydrolysis of the interface product Al4C3, accompanied by the corrosion of the matrix aluminum. Our work provides guidance for improving the life of electronic devices in corrosive environments.
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Affiliation(s)
- Ping Zhu
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
- Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Qiang Zhang
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
- Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Yixiao Xia
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
- Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Kai Sun
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
- Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Xiu Lin
- Industrial Technology Research Institute of Heilongjiang Province, Harbin 150001, China
| | - Huasong Gou
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
- Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Serge Shil’ko
- V.A. Belyi Metal-Polymer Research Institute of National Academy of Sciences of Belarus, 246050 Gomel, Belarus
| | - Gaohui Wu
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
- Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China
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Enhancement of Room Temperature Ethanol Sensing by Optimizing the Density of Vertically Aligned Carbon Nanofibers Decorated with Gold Nanoparticles. MATERIALS 2022; 15:ma15041383. [PMID: 35207925 PMCID: PMC8879461 DOI: 10.3390/ma15041383] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/07/2022] [Accepted: 02/11/2022] [Indexed: 01/17/2023]
Abstract
An ethanol gas sensor based on carbon nanofibers (CNFs) with various densities and nanoparticle functionalization was investigated. The CNFs were grown by means of a Plasma-Enhanced Chemical Vapor Deposition (PECVD), and the synthesis conditions were varied to obtain different number of fibers per unit area. The devices with a larger density of CNFs lead to higher responses, with a maximal responsivity of 10%. Furthermore, to simultaneously improve the sensitivity and selectivity, CNFs were decorated with gold nanoparticles by an impaction printing method. After metal decoration, the devices showed a response 300% higher than pristine devices toward 5 ppm of ethanol gas. The morphology and structure of the different samples deposited on a silicon substrate were characterized by TEM, EDX, SEM, and Raman spectroscopy, and the results confirmed the presence of CNF decorated with gold. The influence of operating temperature (OT) and humidity were studied on the sensing devices. In the case of decorated samples with a high density of nanofibers, a less-strong cross-sensitivity was observed toward a variation in humidity and temperature.
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