6results about How to "Inhibit flaking" patented technology

The invention discloses an aluminum alloy surface anti-corrosion composition and a preparation method and application thereof.In the surface anti-corrosion composition, a WC hard phase provides the framework hardness of a coating, a Co-Cr metal phase endows the coating with good toughness, and the WC hard phase and the Co-Cr metal phase act synergistically, so that the obtained coating has excellent hardness, wear resistance and corrosion resistance; according to the surface anti-corrosion composition, rare earth powder is introduced to serve as an auxiliary, grains can be refined, grain boundaries can be purified in the coating, formation of a denser coating is promoted, an optimized Co-Cr metal phase is combined, and the corrosion resistance of the surface anti-corrosion composition is greatly improved. The long-acting corrosion resistance of the coating in severe environments such as salt mist and damp and hot environments is remarkably improved through synergism, bubbling and stripping of the coating and corrosion of a base body are effectively inhibited, and the remarkable corrosion resistance effect is achieved on the whole.

The application discloses a kind of oxygen consumption type laser cladding wear-resistant self-lubricating titanium alloy and preparation method, including the raw material h-BN@TiO2, TiO2 And CuO are mixed to obtain mixed powder, then mixed powder is placed on the surface of titanium alloy, the thickness of powder laying is 1~1.5mm, laser cladding equipment is used in air to the titanium alloy that has been laid with mixed powder is carried out laser cladding, and the laser cladding equipment is obtained;The mass percentage of each component of the raw material is: TiO2:92~98wt%, h-BN@TiO2:1~10wt%, CuO:1~2wt%.It can be directly carried out in air laser cladding, solves the problem that oxygen element is introduced into laser coating and can form pore, crack and other defects.Problems.CuO and TiO2 are also coated h-BN powder into coating, so that the cladding powder forms coating under lower laser power, avoids self-lubricating phase h-BN to decompose a lot, and forms lubricating film in the process of friction experiment, reduces friction coefficient, and further improves the wear resistance of titanium alloy.

The invention discloses a method for preparing a hard alloy cutter with an incomplete covering coating on a core part and a cutting blade. The hard alloy cutter comprises a clamping part and a cutting part, the cutting part comprises a front cutter surface, a rear cutter surface, an auxiliary rear cutter surface, a main cutting edge formed by intersecting the front cutter surface and the rear cutter surface, and an auxiliary cutting edge formed by intersecting the front cutter surface and the auxiliary rear cutter surface; the method for preparing the hard alloy cutter with the incomplete covering coating on the core comprises the following steps that S1, the hard alloy cutter to be coated is placed and then fed into a chemical coating furnace or a physical coating furnace, and a first pre-coating completely covering a cutting part of the hard alloy cutter to be coated is prepared; s2, the first precoating on at least one of the front tool face, the rear tool face and the auxiliary rear tool face of the cutting part is subjected to material removal machining, and a first coating incompletely covering the core part of the hard alloy tool is formed; and S3, the whole to-be-coated hard alloy cutter is fed into a physical coating furnace, and a second coating completely covering the cutting part of the to-be-coated hard alloy cutter is prepared. The method can be used for preparing the hard alloy cutter and the cutting blade which are high in cutting efficiency and long in service life and are provided with the incompletely-covered coating at the core part.

The invention relates to a novel composite noctilucent material, a preparation method thereof and application of the novel composite noctilucent material in pet garment fabric, and belongs to the technical field of noctilucent materials. The novel composite noctilucent material comprises a substrate layer, and a first packaging layer, a second packaging layer and a surface layer which are sequentially loaded on the surface far away from the substrate layer, the subbase layer is a long-section fiber layer and comprises a silicon resin mixture; the silicon resin mixture comprises silicon resin, a silane coupling agent modified nano oxide and a toughening agent; the first encapsulation layer comprises an aluminate afterglow material, the silicon resin mixture and zirconium oxide; the second encapsulation layer comprises a silicate afterglow material, the silicon resin mixture and cerium oxide; the surface layer comprises the silicone resin mixture, a cured product and short-segment resin fibers. According to the invention, a typical fiber reinforced composite material structure is formed by using the long-section fiber layer as a macroscopic skeleton and the short fiber in the packaging layer as a microcosmic reinforcement, so that cracks or defects caused by stress concentration on brittle luminescent material microcrystals are prevented.

The present application relates to the field of ceramics, and particularly to a high-temperature-resistant black colorant suitable for advanced ceramics, a preparation method and applications thereof, wherein the components of the high-temperature-resistant black colorant include, by mass ratio, 15-25% of Co3O4, 8-15% of Cr2O3, 2-5% of MnO2, 3-8% of SiO2, and 40-60% of Al2O3. The present application realizes the thermal expansion coefficient coordination of the colorant and the alumina matrix by introducing a combination of transition metal oxides matching the alumina lattice, thereby inhibiting cracking or peeling caused by interface stress. A composite doping strategy is adopted to make coloring ions (such as Co 2+ , Cr 3+ ) enter the interstitial space of the alumina lattice to form a stable solid solution structure, thereby significantly improving the color stability at high temperatures. Wet ball milling combined with surface modification is used to ensure uniform dispersion of the colorant particles in the alumina slurry and avoid color spot defects caused by agglomeration.

This invention provides a high-temperature resistant superhydrophobic micro / nanostructure coating and its preparation method. The coating is constructed on a substrate surface and includes an adhesive underlayer and a functional surface layer located on the surface of the adhesive underlayer. The adhesive underlayer contains phenyl silicone resin, and the functional surface layer contains superhydrophobic particles, phenyl silicone resin, and carbon fiber shear tubes. The carbon fiber shear tubes form a micron-scale framework structure, and the superhydrophobic particles form a nano-scale rough structure; together, they constitute a hierarchical micro / nanostructure. This invention forms an inorganic-organic hybrid high-temperature resistant superhydrophobic micro / nanostructure coating by synergistically constructing superhydrophobic particles, phenyl silicone resin, and carbon fiber shear tubes on the substrate surface. The superhydrophobic particles provide a high-temperature resistant hydrophobic base, the phenyl silicone resin provides a high-temperature resistant bonding effect, and the carbon fiber shear tubes provide structural reinforcement. Therefore, the resulting coating possesses both good thermal stability and structural stability, and can mitigate performance degradation under high temperatures.