What is yttrium nitride? It is known that YN forms a cubic crystal fcc lattice with the parameter of a = 4.88 Å [9]. In the Y-containing coatings, yttrium can either form its nitride phase of YN or enter into the composition of other phases (for example, as an element of a substitutional solid solution). For example, no single (Y, Al)N phase is detected in the system of (Y, Al)N, and AlN reacts with Y to form the phases of YN and YAl2 [10,11]. When the coating, including the (Al, Y)N phase, is heated to 600–1000 °C upon contact with the atmosphere, Al2O3 and Y2O3 are formed on the surface. The introduction of Y in the composition of nitride coating increases its resistance to oxidation. The temperature of the onset of active oxidation of the (Nb, Y)N coating, which was 500 °C for a system without adding yttrium, increases to 760 °C at a Y content of 12.1 at.%. An increase in the yttrium content in the nitride coating leads to the formation of an amorphous microstructure with a finer and denser morphology and a smoother surface. When Y is added to the (Ti et al.)N system, its heat resistance increases to 1200 °C. Upon heating up to 1000 °C, the number of oxides formed in the Y-containing coating was half the size compared to the Y-free coating. When Y is added to the (Cr, Al)N system, the cohesive energy increases (the energy of formation decreases) due to the substitution of Cr atoms for Y atoms in the crystal lattice, and, as a result, the phase stability increases. The described effects contribute to a noticeable growth of the wear resistance of the coating, especially when the coating is exposed to high temperatures.
Investigation of the Properties of Multilayer Nanostructured Coating Based on the (Ti,Y,Al)N System with High Content of Yttrium The studies are focused on the properties of the multilayer composite coating based on the (Ti, Y, Al)N system with high content of yttrium (about 40 at.%) of yttrium (Y). The hardness and elastic modulus were defined, and the resistance to fracture was studied during the scratch testing. Two cubic solid solutions (fcc phases), including c-(Ti, Y,Al)N and c-(Y, Ti,Al)N, are formed in the coating. The investigation of the wear resistance of the (Ti, Y, Al)N-coated tools during the turning of steel in comparison with the wear resistance of the tools based on the (Ti et al.)N system coating and the uncoated tools found a noticeable increase (by 250%–270%) in rake wear resistance. During wear, active oxidation processes are observed in the (Ti, Y, Al)N coating. It can be assumed that yttrium oxide is predominantly formed with a possible insignificant formation of titanium and aluminum oxides. At the same time, complete oxidation of c-(Y, Ti, Al)N nanolayers is not observed. Some hypotheses explaining the high performance of a coating with a high yttrium content are considered. The increasing requirements for tool materials, in general, and coatings, in particular, predetermine the need to find ways to further improve their properties. Coatings with a nanolayer structure, which combines nanolayers with different properties, are widely used. In particular, it has been found that plastic flow in a (Cr, Al)N nanolayer coating with alternating layers dominated by CrN and AlN is not associated with the movement of classical dislocations but occurs as a result of the rotation of nanosized grains and sliding along the boundary for larger grains. Changing the parameters of the nanolayer structure (Ti et al.)N coating makes it possible to control its properties.
Several studies consider the properties of the yttrium nitride It has been found that the introduction of yttrium into the (Al, Ti)N coating leads to a decrease in the average grain size and compaction of the microstructure, as well as an increase in the oxidation resistance of the coating. Introducing yttrium also increases heat resistance and hardness at high temperatures (above 1000 °C). Yttrium slows down the decomposition of the Ti1-x-yAlxYyN solid solution and contributes to the formation in the coating of c-TiN, c-YN, and w-AlN phases. The introduction of Y reduces the compressive stress, increases the hardness, and enhances the predominant formation of dense Al2O3 oxide films instead of porous TiO2 oxide. In general, the introduction of yttrium increases the resistance to oxidation. It is found that the wear resistance of the (Ti, Al, Y)N coating grows with an increase in the Y content. At the same time, the average rates of abrasive wear of the (Ti, Al, Y)N coating were 3–5 times lower compared with the (Ti, Al)N coating and ten times lower with the TiN coating. Such properties of the (Ti, Al, Y)N coating are associated with forming a dense structure with nanosized grains and decreasing surface roughness and the level of internal stresses.
Price of Yttrium nitride Yttrium nitride particle size and purity will affect the product's Price, and the purchase volume can also affect the cost of Yttrium nitride. A large amount of large amount will be lower. The Price of Yttrium nitride is on our company's official website.
Yttrium nitride supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Yttrium nitride, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Yttrium nitride, you are welcome tocontact us or inquire at any time.
