subject: Application And Consumption Of Nickel Powder [print this page] Nickel has a high degree of chemical stability. It will not be oxidized if it id heated to 700-800 . Nickel powder has corrosion resistance from a variety of organic substances such as fluorine, alkali and salt water. It becomes surface passivation and gets corrosion resistance in concentrated nitric acid. It has a slow response in hydrochloric acid, sulfuric acid and dilutes nitric acid. Magnetic nickel metals have good toughness and sufficient mechanical strength. They are able to withstand all types of machining.
Pure nickel powder and nickel alloys have wide ranges of applications in the national economy. Nickel has good polishing performance, pure nickel powder is used in nickel plating technology. Particularly noteworthy is the pure nickel powder is also used in radar, television, atomic energy industry, remote control and other modern technology. In rocket technology, the super-nickel powder or nickel alloys for high temperature structural materials. Nickel powder is powder metallurgy in the manufacture of various nickel-containing parts of raw materials, widely used as a catalyst in the chemical industry. The compounds of nickel powder metallurgy in the preparation of alkaline batteries, nickel sulfate is mainly used to prepare the nickel plating electrolyte, formic acid, nickel is used in the hydrogenation of oils, nickel hydroxide for the preparation of alkaline batteries, nickel nitrate can also as a brown pigment in the ceramics industry. However, the pure nickel metal and nickel salt consumption not much in the modern industrial uses, but mainly made of alloy use.
With the increasing demand of China's reform and opening up, the rapid development of industrial technology, electrical industry, mechanical industry, construction, chemical industry and other nickel powder. To sum up the use of nickel powder can be divided into six categories. For metallic materials, they include the production of stainless steel, heat-resistant alloy steel and various alloys over 3000 kinds, accounting for more than 70% of nickel consumption, of which a typical metal materials of nickel - chromium-based alloys, nickel - chromium cobalt alloy, nickel chromium molybdenum alloy, copper nickel alloys, titanium nickel shape memory alloys and hydrogen storage alloy.
The nickel powder is used in electroplating and its usage is about 15% of metal powder consumption. Mainly used in steel and other metal material on the substrate covered with a layer of durable, corrosion-resistant surface layer, its corrosion resistance than galvanized-storey 15% to 20%. Nickel powder is a catalyst in the hydrogenation process of petrochemical industry. The commonly used catalyst is highly dispersed nickel on the alumina matrix composite. This catalyst is not easy to be poisoned by H2S, SO2. Nickel powder can be used as a chemical power, making battery materials. Such as industrial production of Cd-Ni and Fe-Ni, Zn-Ni battery and H2-Ni sealed battery. Can also be used for the production of pigments and dyes. The most important thing is to form yellow-orange pigment, the pigment TiO2, NiO, and Sb2O3 mixed whole material calcined at 800 , covering power, the rutile structure, chemical properties and stability.
Nickel powder can be used in production of ceramic and ferrite. Nickel powder is commonly used in ceramic industry as a coloring agent. In addition, it can increase the adhesion between the billet and ferrite. It makes the billet surface smooth and dense. The ferrite is a relatively new ceramic material and us mainly used for high frequency electrical equipment. Now China has become the world's largest stainless steel consumer and the largest producer. It is also the largest carbide-producing country and man-made diamond producing country in the world. While it also show strong demand of raw materials which are applied in these areas. The raw materials include nickel powder. In 2011, nickel consumption reaches nearly 120kt. It also ranks highest in the world.Source:http://www.mhcmp.com
