New metal materials for chemical corrosion resistance

1.New corrosion resistant alloy materials
Alloy as an emerging material, with its own multiple advantages widely used in different fields, to obtain better application results. China's rapid development of science and technology, staff in the research and development process, not only need to consider the rationality of the application of technology and timeliness, but also need to pay attention to its energy-saving and environmental protection effectiveness. In order to actively respond to the national green environmental protection strategy, more and more production units attach importance to the research and development of energy-saving alloys, and in practice to improve and optimise, and promote its use for a wider range. In order to develop alloy materials that contain less or even no rare metals, especially for stainless steel containing less Cr and Ni elements have been developed at a deep level. Now the relevant researchers and scholars will focus on the Fe-Al-Mn system, relevant data show that the Mn30AL10 steel as a new type of metal materials have been developed, its own corrosion resistance is strong, the practical application of the value of strong. Part of the study shows that some countries have developed Cr15NiJ5Mo stainless steel, such stainless steel is mainly suitable for sour oil and gas wells, its practical application of better results, can be replaced by the original dual-phase steel. Mo, Nb and Cu as the basic elements, the use of its flexibility, to achieve composite processing, with more significant results. Conservation steel can achieve the goal of saving resources, become the focus of China's R & D, high corrosion-resistant materials research and development and exploration of the main direction of high-alloyed materials, stainless steel for the larger market demand, can develop a richer chemical corrosion-resistant materials.
2. Amorphous titanium alloy materials
Amorphous titanium alloy material is a common multi-alloy, its internal composition contains a diversity of metals and metal-like, the metal is also known as metal glass. Amorphous titanium alloy atoms are actually arranged in disordered, difficult to produce dislocations and other phenomena, even if the phenomenon of compositional segregation, the impact on such materials is relatively small, indicating that the material is more corrosion-resistant, high mechanical strength. Research and development of amorphous corrosion-resistant alloys in the early stage, the actual operators choose rare metals as the core component, followed by Ni, Fe and other alloy materials successfully developed, the actual composition of its internal composition of the material changes, significantly enhancing its practical application. Specifically, Fe-Al-Mn alloys maximize the use of fast condensation technology, prompted by its amorphous state, and enhance its corrosion resistance.Al-Fe-B as one of the high-quality materials, which also gained more common use, aluminium-based amorphous alloys is also one of the more cost-effective materials, the most critical feature of its high-strength.Al-La-Ni alloys contain a large amount of internal aluminium, selecting the appropriate measures to its internal composition, significantly enhance the effectiveness of its practical application. The Al-La-Ni alloys contain a large amount of aluminium, and by taking the appropriate measures to crystallise them, the internal fracture strength of the material can be effectively strengthened, and even at higher temperatures it can still be within the range of the original fracture strength. Compared to conventional alloys, these materials are optimised for practical applications, with excellent toughness and corrosion properties.
3.Analysis of magnesium alloy materials
Magnesium alloy as the lightest weight available metal materials within the manufacturing industry, its own performance and characteristics determine its practical application range is more extensive, help to alleviate all kinds of resource depletion, reduce the pressure on energy and the environment, from the perspective of emission reduction, saving, etc., corrosion-resistant magnesium alloy materials development and application is very critical. The enhancement of magnesium alloy's own corrosion resistance can be achieved in 2 ways, i.e. optimising its internal composition, surface technology, and adding a protective layer on its surface to reduce the corrosive effect of the outside world on its whole. At present, there are more methods to enhance the actual surface corrosion resistance of magnesium alloy, which are reflected in the following aspects. First, the integration of rare earth elements, can promote the whole magnesium alloy internal antioxidant performance optimisation, purification of the alloy liquid, greatly enhance the overall corrosion resistance, its appropriate for a series of treatment processing, its corrosion resistance can also be enhanced. Part of the study will AM60 magnesium alloy within the addition of rare earth elements, can promote the Al element oxide film content, the formation of new oxide film, prompting the Mg-Al system alloy corrosion resistance performance. Through the appropriate addition of alloying elements, the use of its flexibility to complete the magnesium alloy microstructure changes and adjustments, especially the second phase regulation, can substantially increase the corrosion resistance of magnesium alloy. Second, laser surface modification. Laser surface melting as a highly efficient surface treatment method, which covers a variety of internal processes, can be handled by controlling the process parameters, optimise and change the microstructure of magnesium alloy, prompting its corrosion resistance to be further strengthened. According to the researchers practical operation shows that the use of laser melting coating Al-Cu alloy, significantly enhance the AZ91HP magnesium alloy wear resistance and corrosion resistance, found that its coating in the Al-Mg matrix distribution of hard phases AlCu4 and Mg17Al12, the coating to form a more compact oxide film, greatly enhancing the corrosion resistance of the entire coating. Third, physical vapour deposition method. PVD process can be selected