Silver metal particles are tiny particles of elemental silver, silver-white in colour, with good electrical and thermal conductivity, ductility, as well as antimicrobial properties, and are widely used in many fields such as electronics, medicine, and chemicals.
Appearance: usually shows a silver-white metallic luster, with a high degree of recognition and aesthetics.
Density: The density is relatively high, about 10.49g/cm³, which makes the silver particles have a certain sense of weight in some applications, such as in the production of jewellery to increase the texture of the ornaments.
Melting point: the melting point is 1234.93K (961.78℃), with high thermal stability, not easy to melt at high temperatures, but can be melted under specific processing conditions for casting and other operations.
Hardness: The hardness of silver itself is relatively soft, with a Mohs hardness of about 2.5-3, which makes silver particles relatively easy to be shaped during processing, but also easy to be scratched or deformed during use.
Electrical and Thermal Conductivity: Silver particles have excellent electrical and thermal conductivity, which is among the highest of any metal. This makes silver particles widely used in the electronics industry, such as for making conductive coatings for electronic components, wires, etc.
Ductility: It has good ductility and can be drawn into fine wires or pressed into thin sheets. This property gives silver particles a great advantage in the manufacture of jewellery, handicrafts, etc. They can be processed into a variety of complex shapes and structures.
STABILITY: Silver is a relatively stable metal at room temperature and pressure, but is prone to chemical reactions with elements such as sulphur in air. When silver particles are exposed to the air, it will combine with the sulfur in the air to form black silver sulfide, leading to the change of the surface colour of the silver particles, which is also the reason why the surface of silver products will turn black after long-term use.
Oxidation: The chemical nature of silver is more active, although it is relatively stable in the air, but in the presence of some specific oxidising agents, such as concentrated nitric acid, concentrated sulfuric acid, etc., oxidation reactions will occur. For example, silver reacts with concentrated nitric acid to produce silver nitrate, nitrogen dioxide and water.
Catalytic: Silver particles have certain catalytic properties, which can accelerate some chemical reactions. For example, in some organic synthesis reactions, silver can be used as a catalyst to promote the reaction.
Reflectivity: It has high reflectivity to visible light, which makes silver particles can be used to make mirrors, reflectors and other optical devices, which can effectively reflect light and provide clear imaging or good lighting effect.
Surface Plasmon Resonance: Silver particles exhibit surface plasmon resonance properties when their size reaches the nanometre level. This means that silver nanoparticles are able to strongly interact with light of specific wavelengths, producing unique optical phenomena such as colour changes, enhanced optical absorption, etc., which has important applications in surface-enhanced Raman scattering, biosensors, and other fields.
Antimicrobial: silver has good antimicrobial properties, inhibiting or killing a variety of microorganisms such as bacteria, fungi and viruses. Silver ions in silver particles can combine with proteins, nucleic acids and other biological macromolecules in microbial cells, destroying the structure and function of microorganisms, so as to achieve antibacterial effect. This makes silver particles have a wide range of application prospects in medical, health, food packaging and other fields.
Electronic industry field:
Conductive materials: silver metal has excellent electrical conductivity, silver particles can be used to prepare conductive paste, conductive adhesive and so on. These materials are widely used in the encapsulation of electronic components, the manufacture of printed circuit boards (PCB), etc., and can ensure the stable transmission of electronic signals. For example, in the encapsulation process of integrated circuits, silver particles in conductive pastes can connect the chip and the substrate to achieve the conduction of electrical signals.
Electrode materials: In electrochemical devices such as batteries and capacitors, silver metal particles can be used as electrode materials. For example, in some high-performance button batteries, silver electrodes can provide higher current output and better stability; in supercapacitors, silver metal particles electrodes can improve the capacitor’s energy storage performance and charging and discharging speed.
Medical field:
Antimicrobial materials: silver metal has good antimicrobial properties, and silver particles are used in antimicrobial dressings, wound healing materials and so on. Silver particles can release silver ions to destroy the cell membrane and protein structure of bacteria, thus inhibiting the growth and reproduction of bacteria and helping wound healing.
Medical Devices: Adding silver particles to the surface coating of some medical devices can play the role of antibacterial, anti-corrosion, and improve the service life and safety of medical devices. For example, the surface of medical devices such as urinary catheters and pacemakers can be coated with silver particles to reduce the risk of infection.
Medical diagnostics: Silver nanoparticles also have applications in biosensors and medical imaging. For example, using the surface plasmon resonance properties of silver nanoparticles, highly sensitive biosensors can be developed for the detection of biomolecules, pathogens, etc. In medical imaging, silver nanoparticles can be used as a contrast agent to improve the contrast of imaging.
Chemical field:
Catalyst: silver metal particles can be used as catalysts for catalysing some chemical reactions, such as organic synthesis reactions and oxidation reactions. For example, in some organic synthesis reactions, silver particles catalyst can improve the selectivity and yield of the reaction; in the process of automobile exhaust purification, silver metal particles can catalyse the conversion of carbon monoxide, nitrogen oxides and other harmful gases to reduce environmental pollution.
Electroplating materials: Silver metal plating is a common electroplating process, silver metal particles can be used as the main component of electroplating solution for silver plating on metal or non-metallic surfaces, to improve the conductivity, decorative and corrosion resistance of materials. For example, silver plating on the surface of jewellery, tableware and other products can increase their beauty and value.
Textile field:
Antibacterial textiles: by adding silver metal particles to fibre materials, textiles with antimicrobial functions, such as underwear, socks and towels, can be prepared. These textiles can inhibit the growth of bacteria and fungi, reduce the generation of odour and keep the textiles clean and hygienic.
Antistatic textiles: silver metal particles have good electrical conductivity and can be used to prepare antistatic textiles. In some of the static sensitive places, such as electronic factories, hospitals, operating theatres, etc., the use of anti-static textiles can avoid the generation and accumulation of static electricity, to protect the safety of the working environment.
Food packaging field: add silver particles in food packaging materials, can play a role in antibacterial, preservation of freshness. Silver particles can inhibit the growth of bacteria, moulds and other microorganisms within the food packaging, extending the shelf life of food.
Optical field:
Reflective materials: silver metal particles can be used to prepare optical components such as mirrors and reflective films. Because silver has a high reflectivity of visible light, silver reflector is widely used in optical instruments, laser technology, solar energy use and other fields. For example, in optical instruments such as telescopes and microscopes, silver mirrors can improve the reflection and collection efficiency of light; silver plating on the surface of solar panels can increase the absorption and conversion efficiency of solar energy.
Surface Enhanced Raman Scattering (SERS) Substrate: Silver nanoparticles have a strong surface-enhanced Raman scattering effect, which can be used as a SERS substrate for detecting low concentrations of biomolecules and chemical substances. This technology has important application prospects in the fields of biomedicine, environmental monitoring and food safety.
VI HALBLEITERMATERIAL GmbH (VIMATERIAL) employs a stringent quality assurance system to ensure the reliability of our product quality. Strict quality control is implemented throughout the entire production chain, and for defective products, we strictly enforce the principle of rework and redo. Each batch is released only after passing detailed specification tests.
Every batch of our materials is independently tested, and, if necessary, we send samples to certified companies for testing. We provide these documents and analysis certificates with the shipment to certify that our products meet the required standards.
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