scholarly journals Development and testing of carbonaceous tin-based solder composites achieving unprecedented joint performance

2021 ◽  
Author(s):  
Sara Hawi ◽  
Somayeh Gharavian ◽  
Marek Burda ◽  
Saurav Goel ◽  
Saeid Lotfian ◽  
...  
Keyword(s):  
High Performance ◽  
Carbon Nanomaterials ◽  
Low Cost ◽  
Creep Tests ◽  
Scanning Calorimetry ◽  
Lap Shear ◽  
Shear Joint ◽  
Service Load ◽  
Extensive Surface ◽  
Walled Carbon Nanotubes

Weight reduction and improved strength are two common engineering goals in the joining sector to benefit various engineering sectors ranging from transport, aerospace, nuclear to many others. Here, in this paper, we show that the suitable addition of carbon nanomaterials to a tin-based solder material matrix (C-Solder® supplied by Cametics Ltd.) results in two fold strength of soldered composite joints. Single-lap shear joint experiments were conducted on soldered aluminium alloy (6082 T6) substrates. The soldering material was reinforced in different mix ratios (0.01 wt% and 0.05 wt%) by carbon black, graphene and single-walled carbon nanotubes. and benchmarked against the pristine C-solder®. The material characterisation was performed using Vickers micro-indentation, differential scanning calorimetry and nano-indentation whereas functional testing involved mechanical shear tests using single-lap aluminium soldered joints and creep tests. The 0.05 wt.% nanomaterials reinforced solders promoted progressive cohesion failure in the joints as opposed to instantaneous fully disbond failure observed in pristine soldered joints, which suggests potential application in high performance structures where no service load induced adhesion failure is permissible (e.g., aerospace assemblies). The novel innovation developed here will pave the way to achieving low-cost high-performance solder joining without carrying out extensive surface preparations.

scholarly journals Development of carbonaceous tin-based solder composite achieving unprecedented joint performance

2021 ◽  
Author(s):  
Sara Hawi ◽  
Somayeh Gharavian ◽  
Marek Burda ◽  
Saurav Goel ◽  
Saeid Lotfian ◽  
...  
Keyword(s):  
Carbon Black ◽  
High Performance ◽  
Carbon Nanomaterials ◽  
Creep Tests ◽  
Scanning Calorimetry ◽  
Lap Shear ◽  
Shear Joint ◽  
Service Load ◽  
Extensive Surface ◽  
Walled Carbon Nanotubes

AbstractWeight reduction and improved strength are two common engineering goals in the joining sector to benefit transport, aerospace, and nuclear industries amongst others. Here, in this paper, we show that the suitable addition of carbon nanomaterials to a tin-based solder material matrix (C-Solder® supplied by Cametics Ltd.) results in two-fold strength of soldered composite joints. Single-lap shear joint experiments were conducted on soldered aluminium alloy (6082 T6) substrates. The soldering material was reinforced in different mix ratios by carbon black, graphene, and single-walled carbon nanotubes (SWCNT) and benchmarked against the pristine C-solder®. The material characterisation was performed using Vickers micro-indentation, differential scanning calorimetry and nano-indentation, whereas functional testing involved mechanical shear tests using single-lap aluminium soldered joints and creep tests. The hardness was observed to improve in all cases except for the 0.01 wt.% graphene reinforced solders, with 5% and 4% improvements in 0.05 carbon black and SWCNT reinforced solders, respectively. The maximum creep indentation was noted to improve for all solder categories with maximum 11% and 8% improvements in 0.05 wt.% carbon black and SWCNT reinforced ones. In general, the 0.05 wt.% nanomaterial reinforced solders promoted progressive cohesion failure in the joints as opposed to instantaneous fully de-bonded failure observed in pristine soldered joints, which suggests potential application in high-performance structures where no service load induced adhesion failure is permissible (e.g. aerospace assemblies). The novel innovation developed here will pave the way to achieving high-performance solder joining without carrying out extensive surface preparations.

scholarly journals Carbon nanomaterial hybrids via laser writing for high-performance non-enzymatic electrochemical sensors: a critical review

2021 ◽  
Author(s):  
Marcel Simsek ◽  
Nongnoot Wongkaew
Keyword(s):  
Noble Metal ◽  
Critical Review ◽  
High Performance ◽  
Carbon Nanomaterials ◽  
Electrochemical Sensors ◽  
Low Cost ◽  
Three Dimensional ◽  
Laser Writing ◽  
Enzyme Mimicking ◽  
Natural Enzyme

AbstractNon-enzymatic electrochemical sensors possess superior stability and affordability in comparison to natural enzyme-based counterparts. A large variety of nanomaterials have been introduced as enzyme mimicking with appreciable sensitivity and detection limit for various analytes of which glucose and H2O2 have been mostly investigated. The nanomaterials made from noble metal, non-noble metal, and metal composites, as well as carbon and their derivatives in various architectures, have been extensively proposed over the past years. Three-dimensional (3D) transducers especially realized from the hybrids of carbon nanomaterials either with metal-based nanocatalysts or heteroatom dopants are favorable owing to low cost, good electrical conductivity, and stability. In this critical review, we evaluate the current strategies to create such nanomaterials to serve as non-enzymatic transducers. Laser writing has emerged as a powerful tool for the next generation of devices owing to their low cost and resultant remarkable performance that are highly attractive to non-enzymatic transducers. So far, only few works have been reported, but in the coming years, more and more research on this topic is foreseeable. Graphical abstract

Novel ionic bioartificial muscles based on ionically crosslinked multi-walled carbon nanotubes-mediated bacterial cellulose membranes and PEDOT:PSS electrodes

2021 ◽  
Author(s):  
Yaofeng Wang ◽  
Fan Wang ◽  
Yang Kong ◽  
Lei Wang ◽  
Qinchuan Li
Keyword(s):  
Carbon Nanotubes ◽  
Bacterial Cellulose ◽  
Specific Capacitance ◽  
High Performance ◽  
Low Cost ◽  
Actuation Voltage ◽  
Fast Response ◽  
Bending Deformation ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Abstract High-performance bioartificial muscles with low-cost, large bending deformation, low actuation voltage, and fast response time have drawn extensive attention as the development of human-friendly electronics in recent years. Here, we report a high-performance ionic bioartificial muscle based on the bacterial cellulose (BC)/ionic liquid (IL)/multi-walled carbon nanotubes (MWCNT) nanocomposite membrane and PEDOT:PSS electrode. The developed ionic actuator exhibits excellent electro-chemo-mechanical properties, which are ascribed to its high ionic conductivity, large specific capacitance, and ionically crosslinked structure resulting from the strong ionic interaction and physical crosslinking among BC, IL, and MWCNT. In particular, the proposed BC-IL-MWCNT (0.10 wt%) nanocomposite exhibited significant increments of Young's modulus up to 75% and specific capacitance up to 77%, leading to 2.5 times larger bending deformation than that of the BC-IL actuator. More interestingly, bioinspired applications containing artificial soft robotic finger and grapple robot were successfully demonstrated based on high-performance BC-IL-MWCNT actuator with excellent sensitivity and controllability. Thus, the newly proposed BC-IL-MWCNT bioartificial muscle will offer a viable pathway for developing next-generation artificial muscles, soft robotics, wearable electronic products, flexible tactile devices, and biomedical instruments.

Fabrication of a Carbon Nanotube Gas Sensor Microelectrodes and its Application for Ammonia Detection

2013 ◽  
Vol 431 ◽  
pp. 306-311
Author(s):  
Xiang Tao Ran ◽  
Zhi Wang ◽  
Li Yang
Keyword(s):  
Gas Sensors ◽  
High Performance ◽  
Gas Sensing ◽  
Structural Parameters ◽  
Low Cost ◽  
Manufacturing Method ◽  
Multi Walled Carbon Nanotubes ◽  
Ammonia Detection ◽  
Low Cost Manufacturing ◽  
Walled Carbon Nanotubes

With the increasing needs for high-performance gas sensors in industrial production, environmental monitoring and so on, the research on gas sensors is becoming more and more important. In this paper, the electric field intensity distribution simulation process of the interdigital microelectrodes (IMEs) is discussed in details to get the proper electrode structural parameters. The IMEs on the ITO surface with a minimum gap of about 4μm are achieved by lithography, which provides a reliable, low-cost manufacturing method. Sensitive components are made of the multi-walled carbon nanotubes modified materials. The gas-sensing property of the sensor is detected for ammonia. The experiment result shows that the performance of the nanomodified sensor is obviously improved.

From coordination polymer to carbon nanotube: Preparation, characterization and rapid adsorption capacity toward organic pollutants

2020 ◽  
Vol 44 (7-8) ◽  
pp. 487-493
Author(s):  
Hong-Yan Lin ◽  
Yi-Fei Wang ◽  
Yuan Tian ◽  
Guo-Cheng Liu ◽  
Jian Luan
Keyword(s):  
Carbon Nanotubes ◽  
Coordination Polymer ◽  
High Performance ◽  
Low Cost ◽  
Freundlich Isotherm ◽  
Catalyst Precursor ◽  
Order Kinetic ◽  
Order Kinetic Model ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

A CuI coordination polymer based on the N,N’-bis(3-pyridinecarboxamide)-1,4-butane (3-dpyb) ligand, namely [Cu(3-dpyb)0.5Cl], is hydrothermally synthesized and structurally characterized, and is used as a catalyst precursor to synthesize multi-walled carbon nanotubes. Interestingly, the as-grown multi-walled carbon nanotubes exhibit high performance in removing dyes from solution and can serve as a low-cost and fast adsorbent. In addition, the adsorption behavior of this new adsorbent fits well with the Freundlich isotherm and the pseudo-second-order kinetic model.

Double doping approach for unusually stable and large n-type thermoelectric voltage from p-type multi-walled carbon nanotube mats

2020 ◽  
Vol 8 (26) ◽  
pp. 13095-13105 ◽  
Author(s):  
Qiujun Hu ◽  
Zhongxu Lu ◽  
Yizhuo Wang ◽  
Jing Wang ◽  
Hong Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Seebeck Coefficients ◽  
Thermoelectric Voltage ◽  
Large N ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
P Type ◽  
Flexible Thermoelectric ◽  
Walled Carbon Nanotubes

Multi-walled carbon nanotubes (MWCNTs) have shown low n-type Seebeck coefficients (−10 μV K−1), which are not good enough to prepare high performance low-cost MWCNT based mechanically flexible thermoelectric devices.

Effect of Presence of Multi-Walled Carbon Nanotubes on the Creep Properties of Sn-Ag-Cu Solder

2006 ◽  
Author(s):  
S. M. L. Nai ◽  
J. Wei ◽  
M. Gupta
Keyword(s):  
Carbon Nanotubes ◽  
Room Temperature ◽  
Creep Tests ◽  
Creep Properties ◽  
Lap Shear ◽  
Micron Size ◽  
Multi Walled Carbon Nanotubes ◽  
Free Solder ◽  
Walled Carbon Nanotubes ◽  
Made In

In this study, Sn-Ag-Cu based nanocomposites with multi-walled carbon nanotubes (MWCNTs) as reinforcements were successfully synthesized using the powder metallurgy technique. Varying weight percentages of MWCNTs were blended together with micron size lead-free solder particles. The blended powder mixtures were then compacted, sintered and finally extruded at room temperature. The extruded materials were then used to characterize the melting point and to prepare lap-shear samples for creep tests. Miniature creep samples were created using a specially designed fixture and static loading creep tests were carried out on the solder joint samples at room temperature at 24N and 36N loads. Creep results showed improved creep resistance with the addition of MWCNTs. An attempt is made in the present study to correlate the variation in weight percentages of reinforcement with the creep properties of the resultant nanocomposite materials.

Electropolymerized MIP with MWCNTs on Stir Bar Using Multivariate Optimization for Tetradifon Detection in Date

2019 ◽  
Vol 7 (5) ◽  
pp. 404-417 ◽  
Author(s):  
Fatemeh Ganjeizadeh Rohani ◽  
Mehdi Ansari
Keyword(s):  
Experimental Design ◽  
High Performance ◽  
Low Cost ◽  
Residue Analysis ◽  
Selective Extraction ◽  
Local Market ◽  
Multi Walled Carbon Nanotubes ◽  
Stir Bar Extraction ◽  
Walled Carbon Nanotubes

Background: Multi-walled carbon nanotubes (MWCNT) adjunct to molecularly imprinted polymers (MIP) have advantages of the large surface area of nanoparticles and selectivity of MIPs for selective extraction of tetradifon as a widely used pesticide in date palm. Objectives: The main aims were the use of experimental design, electrochemical synthesis and ultra-high performance liquid chromatography (UHPLC) to develop a simple, reliable and precise pesticide residue analysis method as an important aspect of food and drug quality control for the determination of tetradifon in date palms. Methods: An MIP in the presence of MWCNT was synthesized by cyclic voltammetric technique on a steel rod to produce a composite of MIP-MWCNTs for stir bar extraction of tetradifon residue in date samples. The experimental design was used to optimize MIPMWCNT composite synthesis through the screening of eight variables. The composite was characterized by scanning electron microscopy (SEM). Tetradifon was determined in extracted samples by UHPLC under optimum conditions. Results: A very thin film was made by MIP-MWCNT coated on a steel rod which was repeatable and had good adhesion and persistence. The detection limit (LOD) and the quantification limit (LOQ) of the method were measured as 16 and 49 ng/ml, respectively. Average recovery of tetradifon at the two spiked levels was observed to be as low as 86.5% to 90.7% (RSD from 0.79% to 1.04%). Conclusion: The low cost, high selectivity, good reproducibility, acceptable intra and inter day precision and accuracy developed method were successfully applied to determine tetradifon residue in date samples purchased from a local market.

Ni0.33Co0.66(OH)F hollow hexagons woven by MWCNTs for high-performance lithium-ion batteries

2015 ◽  
Vol 3 (41) ◽  
pp. 20690-20697 ◽  
Author(s):  
Huaping Chen ◽  
Yufei Zhang ◽  
Jun Yang ◽  
Ziyang Dai ◽  
Nina Fu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Low Cost ◽  
Lithium Ion ◽  
One Pot ◽  
Multi Walled Carbon Nanotubes ◽  
Template Free ◽  
Walled Carbon Nanotubes

A template-free two-step strategy is successfully developed for the low-cost one pot production of Ni0.33Co0.66(OH)F hollow hexagons woven by multi-walled carbon nanotubes (MWCNTs).

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