Investigation on the electrical properties of AgNi contact materials with various Ni content

2017 ◽  
Author(s):  
Heng Wang ◽  
Huan Yuan
Keyword(s):  
Electrical Properties ◽  
Contact Materials ◽  
Ni Content

scholarly journals Black Phosphorus-Molybdenum Disulfide Hetero-Junctions Formed with Ink-Jet Printing for Potential Solar Cell Applications with Indium-Tin-Oxide

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 560
Author(s):  
Ravindra Ketan Mehta ◽  
Anupama Bhat Kaul
Keyword(s):  
Electrical Properties ◽  
Molybdenum Disulfide ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Cost Effective ◽  
Contact Materials ◽  
Ito Glass ◽  
The Future ◽  
Potential Applications ◽  
Jet Printing

In this work, we implemented liquid exfoliation to inkjet-print two-dimensional (2D) black phosphorous (BP) and molybdenum disulfide (MoS2) p–n heterojunctions on a standard indium tin oxide (ITO) glass substrate in a vertical architecture. We also compared the optical and electrical properties of the inkjet-printed BP layer with that of the MoS2 and the electrical properties of the mechanically exfoliated MoS2 with that of the inkjet-printed MoS2. We found significant differences in the optical characteristics of the inkjet-printed BP and MoS2 layers attributed to the differences in their underlying crystal structure. The newly demonstrated liquid exfoliated and inkjet-printed BP–MoS2 2D p–n junction was also compared with previous reports where mechanically exfoliated BP–MoS2 2D p–n junction were used. The electronic transport properties of mechanically exfoliated MoS2 membranes are typically better compared to inkjet-printed structures but inkjet printing offers a cost-effective and quicker way to fabricate heterostructures easily. In the future, the performance of inkjet-printed structures can be further improved by employing suitable contact materials, amongst other factors such as modifying the solvent chemistries. The architecture reported in this work has potential applications towards building solar cells with solution processed 2D materials in the future.

Study on Ag/SnO2/TiO2 Electrical Contact Materials Prepared by Liquid Phase In Situ Chemical Route

2014 ◽  
Vol 936 ◽  
pp. 486-490 ◽  
Author(s):  
Yan Cai Zhu ◽  
Jing Qin Wang ◽  
Li Qiang An ◽  
Hai Tao Wang
Keyword(s):  
Liquid Phase ◽  
Electrical Properties ◽  
Electrical Contact ◽  
Electrical Performance ◽  
Powder Metallurgy Method ◽  
Chemical Route ◽  
Contact Materials ◽  
Electrical Contact Materials ◽  
Distribution State

In order to improve the machinability and electrical performance of the Ag electrical contact materials. A new kind of nano-Ag/SnO2-TiO2 electrical contact materials were prepared by liquid phase in-situ chemical route. The distribution state of elements titanium in copper and their effects on the microstructures and properties have been studied. The results of SEM show that SnO2-TiO2 powders are small, uniform and with no obvious phenomenon of reunion. At last, Ag/SnO2-TiO2 electrical contact materials were prepared by powder metallurgy method and electrical performance were done. Test results show that the electrical properties of Ag/SnO2-TiO2 are superior to the electrical properties of Ag/SnO2. Hence Ag/SnO2-TiO2 may become a new contact material which can replace Ag/SnO2.

Development and characterization of bronze-Cr-Ni composites produced by powder metallurgy

2015 ◽  
Vol 22 (4) ◽  
Author(s):  
Aykut Canakci ◽  
Temel Varol ◽  
Hamdullah Cuvalci ◽  
Fatih Erdemir ◽  
Serdar Ozkaya
Keyword(s):  
Green Density ◽  
Contact Materials ◽  
X Ray ◽  
Ni Content ◽  
Compact Pressure ◽  
Electrical Conductivities ◽  
Lower Porosity ◽  
Microstructure Density ◽  
Hardness Values

AbstractIn this study, the bronze-Cr-Ni composites were prepared by means of the powder metallurgical method. The influence of the composition and compact pressure on microstructure, density, hardness and electrical conductivity was examined. Scanning electron microscope (SEM) and energy dispersive X-ray analysis (EDX) were used to analyze the microstructure of the contact materials. The results showed that density of the bronze-Cr-Ni composites decreased with increasing Ni content. Increasing compact pressure led to lower porosity and consequently improved the density of bronze-Cr-Ni composites. The relative green density increased from 78% to 95% with the increase in the compact pressure from 200 MPa to 800 MPa. The hardness values showed a decrease from 95.1 BHN to 71.6 BHN by the addition of Ni from 1 wt% to 5 wt% at 800 MPa. It was found that addition of Ni at 1 wt% was required to achieve increased hardness and sufficient conductivity for bronze-Cr-Ni composites. The electrical conductivities of contact materials containing 3 wt% Ni and 5 wt% Ni was lower than that of 1 wt% Ni.

Processing and Electrical Properties of Nano-Al2O3/Cu Composites

2017 ◽  
Vol 898 ◽  
pp. 984-991 ◽  
Author(s):  
Yi Liu ◽  
Jin Feng Leng ◽  
Zhi Wei Li ◽  
Pei Yu Zhang ◽  
Qiu Rui Wu
Keyword(s):  
Electrical Properties ◽  
Electrical Contact ◽  
Electrical Equipment ◽  
Copper Matrix ◽  
Vacuum Arc ◽  
Matrix Composites ◽  
Contact Materials ◽  
Mechanical And Electrical Properties ◽  
Electrical Contact Materials ◽  
Pure Cu

Copper matrix composites (CMCs) are widely used in electrical equipment and electrical contact materials due to their excellent electrical properties. Al2O3 powders are widely used as a reinforcing agent to enhance mechanical properties of MMCs. The xAl2O3/Cu (x =0, 0.2, 0.5, 0.7, and 1.0wt. %) composites were prepared via vacuum arc melting method. The mechanical and electrical properties were obtained by measuring the hardness and conductivity. The morphology of copper and Al2O3/Cu composites was characterized by optical microscopy (OM) and scanning electron microscopy (SEM). With the addition of Al2O3 from 0.2 wt. % to 1.0 wt. %, the relative densities of composites decreased from 98.5% to 97.0%. The hardness of the composites increased with increase in the Al2O3 powders content. The hardness of 1.0Al2O3/Cu composites was 57.9 HB, which was higher than that of pure Cu by 18.6%.. With the addition of Al2O3, the IACS% of Al2O3/Cu composites decreased from 88.97 to 86.16.

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