New materials refer to those emerging or developing materials with traditional materials’ excellent performance. It can be seen from the history of human technological development that the modern world has experienced two industrial revolutions
The metal powder metallurgy is the preparation of metal or metal powder (or a mixture of metal powder and non-metallic powder) as a raw material, manufacturing technology of metal materials, composite, and all types of products forming and sintering. Powder metallurgy and production of ceramics is somewhat similar, so a series of new powder metallurgy technology can also be used for the preparation of ceramic materials. Because of the advantages of powder metallurgy technology, it has become the key to solve the problem of new materials, plays an important role in the development of new materials.
Metal powder metallurgy technology can minimize the alloy composition segregation, the elimination of coarse, uneven casting organization. Corrosion resistance of stainless steel in the preparation of high-performance rare earth permanent magnetic materials, rare earth hydrogen storage materials, luminescent materials, rare earth catalysts, high temperature superconducting materials, new metallic materials (such as Al-Li alloy, heat-resistant Al alloys, super alloys, powder, powder The high-speed steel, intermetallic compounds, high temperature structural materials, etc.) play an important role.
The metal powder can be prepared amorphous, microcrystalline, quasicrystals, nanocrystalline supersaturated solid solution such as a series of high-performance non-equilibrium materials, and these materials have excellent electrical, magnetic, optical and mechanical properties. At the same time, the metal manganese powder can easily implement various types of composite, give full play to the characteristics of each group element material is a low-cost production of high performance metal matrix and ceramic composite materials technology. It also can produce the ordinary melting method can not be produced with a special structure and properties of materials and products, new porous biomaterials, porous membrane materials, high-performance structural ceramics and functional ceramic materials.
The metal power supplier can be achieved net near the formation of form and automated mass production, which can effectively reduce the production of resources and energy consumption. It can take advantage of the ore, tailings, and steelmaking sludge rolled steel scales, recycling scrap metal as raw material, is an effective material recycling and comprehensive utilization of new technologies. The development of powder preparation of new technologies, new processes, process theory, with emphasis on ultra-fine powder and nano-powders, rapid cooling of amorphous, quasicrystal and microcrystalline powders, mechanical alloying technology, self-propagating high temperature synthesis , powder size, structure, morphology, composition, control technology. The general trend is that controlled the direction of the ultra-fine, ultra-pure and powder characteristics.
Powder metallurgy discipline’s priority developing directions are: the establishment of a new consolidation process simulation process theory of the net near the forming technology, such as powder injection molding, extrusion, injection molding, temperature and pressure forming and powder forging. Establishment of the new consolidation technology and its process simulation technology whose main goal is densification. Such as hot isostatic pressing, to be hot isostatic pressing, sintering hot isostatic pressing, microwave sintering and high-energy forming. It can be applied in powder metallurgy materials design, characterization and evaluation of new technologies. Pore properties of powder metallurgy materials, interface issues and strengthening toughening mechanism.Source:http://www.mhcmp.com
The application of tungsten in various industries
Steel Industry Most of tungsten applied in the production of special steels. The widely used high-speed steel was containing 9-24% of tungsten, 3.8-4.6% of chromium, 1-5% of vanadium, 4-7% of cobalt, 0.7-1.5% of carbon.
Magic effects of coconut oil
According to records, coconut oil can be regarded as the nobility of skin care plant extracts. It was rich in exotic tension of tropical plants, which can enhance the contractile force of the pores, perfectly beautify and nourish the skin.
Exploring the Potentials of Nano-Aluminum Powder
Nano-aluminum powder, a material with remarkable properties due to its minuscule particle size, is revolutionizing various industries with its high reactivity and large specific surface area. Unlike its bulk counterpart, nano-aluminum powder begins to oxidize at a lower temperature of 550°C, compared to the 950°C oxidation point of ordinary aluminum. This lower ignition energy and full combustion without apparent cohesion make it a superior choice for applications requiring high energy and efficiency. The unique characteristics of nano-aluminum powder, such as faster burning rates and greater heat release, are largely influenced by its synthesis method, which determines its particle size, surface area, and shape.
