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If you are first learning SMAW, you may want to opt for a user-friendly rutile electrode. However, anyone who plans to weld professionally or critical structures (and that includes farm implements) should learn with the electrodes used for these applications, and that means mastering basic and cellulosic electrodes.Read more -
Stick welding is one of the oldest and most certainly one of the most widely used welding methods across various industries. The advantages include low cost, high versatility, speed, and penetration, making it a favorite in multiple industrial applications.However, Stick welding can also be highly versatile for home and DIY projects and on-field repairs. That's why, in this article, we'll delve into the core principles, equipment selection, safety measures, and step-by-step techniques on how to Stick weld. Once you get the hang of it, you can achieve strong, durable welds with this versatile and enduring welding process.Read more -
If you are going to weld in a position that is steeper than 45 degrees, you have to realize that you will be against gravity. The 7018 electrode was designed for this very purpose. Classed by the AWS (American Welding Society), this is the perfect choice because the 7018 has a lower content of iron powder. This particular electrode makes a weld puddle that is able to freeze almost instantly and won’t drip off while working. You can also use the AWS classed 6010 stick but this electrode requires a certain whipping or stacking technique in which you pull the stick out of the puddle and put it back in intermittently. You can use the 6100 for the same kind of work but 7018 is known to give better results and a quicker weaving pattern.Read more -
It might have crossed your mind if it is ok to hold a stick welding electrode when you weld. Or you might have seen others do it. But when is it helpful, and how safe is it?You can hold the electrode when stick welding (SMAW) for a short time to improve the electrode’s stability when striking the arc or making tack welds. When doing so, you must wear dry welding gloves in good condition.Read more -
Stick welding, while not the hardest form of welding to learn, can still be difficult at times. Getting an arc to ignite on the first try is absolutely a skill, and not everyone can do it. Starting an arc isn’t the only tricky part of stick welding, so if you’re looking to improve your welding, give these tips and tricks a try.Read more -
I'm putting together a grant application on advanced FSAW-type piezoelectric resonators coupled to a transmon qubit. To my points: Can you supply 4 inch or 6 inch wafers with thin films of Niobium deposited? >If so, what substrates are possible and what layer thicknesses, and do you have any characterisation of the layer morphology, properties, etc.? Is Niobium on Lithium Niobate possible? >Would it be possible to give me a quote, or an indicative non-binding ballpark price, to assist me with preparation of the grant? Thanks for taking the time to read my message. I'm really excited about this project, so if this is work you are interested in then I'd be very keen to pursue this. In any case, if you can let me know, I'd appreciate it. Best regards, have a good day.Read more -
The word piezoelectricity comes from the Greek word piezein, which means squeeze or press and electron, which means “amber” and is an ancient source of electric charge.The French physicists Jacques and Pierre Curie discovered in 1880 that electric charges could accumulate in certain solid materials in response to an applied mechanical stress.Piezoelectric materials allow conversion of energy from the mechanical domain to the electrical domain and vice versa. They can be used to create various sensors or actuators: applied periodic electrical signal can result in the generation of ultrasonic waves for imaging purposes.Read more -
Piezoelectric actuators and other piezoelectric components feature a compact size and low profile, no electromagnetic noise, and a host of other advantages. For this reason, they are increasingly used for auto-focus actuators in cameras and for other applications. Currently, the only practical piezoelectric materials are lead-based materials, and so lead-based materials are widely used in piezoelectric components.Although the lead contained in piezoelectric components is not subject to the RoHS directive and other environmental regulations, it is preferable that a lead-free alternative be developed for the future. Also, lead-based piezoelectric materials cannot be co-fired with Ni, and so currently, high-cost Ag/Pd (palladium) is used for the inner electrodes when stacking. Lead-free piezoelectric materials, on the other hand, enable the possibility of use of low-cost Ni. This paper presents our work in successfully fabricating lead-free multilayer piezoelectric ceramics with Ni inner electrodes.Read more -
The wrap-around is another common electrode pattern. The wrap-around electrode pattern is typically used when you need to connect more electrical leads to the same surface of the piezo component. This may be relevant if you want to bond the opposite surface of the component against a flat surface. This specific electrode pattern is often used on “thin” piezo components.Please note, the un-electroded band of the electrode pattern must be as wide as the thickness of the component. Therefore, this pattern is not suited for very thick components with very small electrode surface areas.There can be many variations in wrap-around electrode pattern placement and dimensions. Therefore, it is necessary to have a drawing of the desired electrode pattern. Noliac can provide drawings and specifications in order to get full agreement about the design.Read more -
Piezoelectric ceramics must go through electrode application and polarization before they can be used properly. Electrode application is a crucial process that determines how piezoelectric ceramics will be assembled with other components. Furthermore, many of our customers’ requirements are closely related to the electrode application of piezoelectric ceramics. Therefore, through the following article, we would like to introduce the knowledge about electrode application of piezoelectric ceramics.Read more -
Piezoelectricity is exploited in applications such as the production and detection of sound, generation of high voltages, electronic frequency generation, microbalances, to drive an ultrasonic nozzle, and ultrafine focusing of optical assemblies. It is the basis of a number of scientific instrumental techniques with atomic resolution, the scanning probe microscopies such as STM, AFM, MTA and SNOM, as well as everyday uses, such as acting as the ignition source for cigarette lighters, push-start propane barbecues, and quartz watches.A piezoelectric sensor is a device that uses the piezoelectric effect, to measure changes in pressure, acceleration, temperature, strain, or force by converting them to an electrical charge. Although originally discovered in 1880 by French physicists Jacques and Pierre Curie, it was only in the 1950s that manufacturers begin to use the piezoelectric effect in industrial sensing applications. Since then, this measuring principle has been increasingly used, and has become a mature technology with excellent inherent reliability. It has been successfully used in medical, aerospace, nuclear instrumentation, as a tilt sensor in consumer electronics or a pressure sensor in the touch pads of mobile phones.In the automotive industry, piezoelectric elements are used to monitor combustion when developing internal combustion engines. The sensors are either directly mounted into additional holes into the cylinder head or the spark/glow plug is equipped with a built-in miniature piezoelectric sensor.Read more -
The world’s energy crisis and environmental pollution are mainly caused by the increase in the use of fossil fuels for energy, which has led scientists to investigate specific cutting-edge devices that can capture the energy present in the immediate environment for subsequent conversion. The predominant form of energy is mechanical energy; it is the most prevalent energy in the environment and can be harvested for conversion into useful, electrical energy. Compared with electromagnetic, electrostatic, magneto strictive, dielectric elastomer and frictional electric transducers, piezoelectric transducers have higher high electrical and mechanical constants, large electromechanical coupling coefficients, high dielectric numbers and low losses and are currently the most dominant method of mechanical energy acquisition. Therefore, the research of piezoelectric transducers has received great attention from the scientific community. This paper reviews the research progress of piezoelectric energy acquisition technology. The main objective of this paper is to compile, discuss and summarize the recent literature on piezoelectric energy harvesting materials and applications. Piezoelectric catalytic materials, piezoelectric supercapacitors (SCs), piezoelectric self-charging devices and piezoelectric electrochemical energy storage are mainly introduced. This review briefly introduces the recent advances in piezoelectric-based catalysts and electrochemical energy storage, concentrating on the attributes of various piezoelectric materials and their uses.Read more
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