In solid propellant of rocketlaunch satellites

Currently, the production ofelectrolytic nickel powder mainly used full chlorine electrolyte, also have thereport about using high chloride electrolyte.The mechanical crushing method: refers to usemechanical force broken large solid into the desired particle size processingmethod.  Nickel metal through crushing, grinding processed intonickel powder is a remarkably versatile metal powder materials, due to themagnetic properties, ultrafine nickel powder can be used  Flocking Machine Manufacturers  as magnetic materials,the ultrafine pigment level products in the security printing inks have goodrole.Nickel powder for metal carbides and graphite having good wettability andgood suppression performance, tsintering properties, etc, thus it is animportant carbide and diamond matrix bonding metal powder material. The advantage of thismethod is capable of continuous operation, production capacity is large, butthe morphology of the powder is difficult to control, while the range ofparticle size distribution is unevenness.The application of ultrafine nickel powder in various fields. 

Nickel is a silvery-white metal, with magnetism, conductivity and good chemical stability, high temperature stability and mechanical stability. Different by the mechanical force can be divided into mechanical impactpulverization method, air pulverization method, ball milling and ultrasonicpulverization method.The nickel powder productionmethod has a lot, there are having electrolytic production nickel powder, asolution containing Ni ions added in an electrolytic cell, use graphite or anoble metal as an electrode, the power is turned on, and periodically changingthe direction of current.Solid-phase reduction: heated decompose nickelcarbonate or nickel oxalate to get nickel oxide, and then nickel oxide useactivated carbon reduction can be obtained metallic nickel powder. The method is a commonly used method in the industry, butthe drawback is the prepared nickel powder coarse, high energy consumption. If in nickel powder, especially in the preparation and application ofultrafine nickel powder have progress, it will important to have full use ofresources, and improve economic efficiency.

Ultrafine nickel powder is a nano-metalmaterials, with a series of unique physical and chemical properties: ultrafinenickel powder has high surface activity, large surface area, is a good catalyst,use nickel powder to make nano-composite catalyst can make organicsplushydrogen or the efficiency of the dehydrogenation reaction was increased by10 times than the conventional nickel agent; ultrafine nickel powder has a goodconductivity, low cost, is widely used in the conductive paste, a multilayerceramic capacitor and a nickel-cadmium battery electrodes, etc, the nanonickelpowder being applied to the nickel-metal hydride battery, also the direction ofthe nickel metal hydride batteries developing. Currently, ball milling method is the most usingmechanical method in preparing ultrafine nickel powder.

Pulverization Method. In solid propellant of rocketlaunch satellites, adding about 1% of the nano-nickel, can be tripled its fuelvalue. So that ultrafine nickel powder in the catalyst sintering activator,conductive paste, battery, carbide has broad application prospects. Themorphology and size of the nickel powder can be controlled by changing thecurrent conditions. Electrolyzing a period of time can use magneticmaterial to collect a nickel powder in the bottom of electrolytic cell. Now is still at the experimentalstage. China haverich nickel resources and strong nickel smelting capacity, automotive,electronics, machinery, information industry development momentum catchworldwide attention, the applications of nickel powder continue to broaden andextend.Electrolytic production of nickel powder have high purity, particle size andbulk density can be controlled, dendritic particles, large surface area andexcellent performance of repression and sintering properties, has an importantuse in the powder metallurgy industry. But while usingactivated carbon as a reductant, the reaction is slow, and the resulting nickelpowder susceptible to contaminate by carbon