364results about How to "Improve coating uniformity" patented technology

A method of fabricating a light emitting device comprises: mounting a light emitting diode chip in a package; heating the light emitting diode chip package assembly to a pre-selected temperature; and dispensing a pre-selected volume of a mixture of at least one phosphor and a light transmissive thermosetting material (silicone, epoxy) on a surface of the chip. The pre-selected volume and temperature are selected such that the phosphor/material mixture flows over the entire light emitting surface of the chip before curing. In an alternative method, using a light transmissive UV curable material such as an epoxy, the phosphor/material mixture is irradiated with UV radiation after a pre-selected time to cure the material. The pre-selected volume and pre-selected time are selected such that the phosphor/material mixture flows over at least the light emitting surface of the chip before curing.

The cell pole piece includes electrode active substance, collector, adhesive and conducting agent. The thickness of said pole piece is 40~100mum. The active substance of anode is selected from one of LiCoO2and LiMnO2 or the mixture of the both. The active substance of cathode is electrographite with grain size D50 distributed between 5~11mum. The said adhesive is polyvinylidene fluoride or Teflon. The conducting agent is selected from one of conducing carbon black, super-conduct carbon black, conductance graphite, acetylene black and carbon nano tube, or mixture of two of them above, or the mixture of more than two of them above. The weight percentage of electrode active substance, adhesive and conducting agent are 85~96%, 2~8%, 1~10% respectively.

The invention relates to a core-shell structured lithium nickel manganese cobalt precursor, a fabrication method thereof and application thereof in a lithium ion battery. The precursor is nickel manganese cobalt carbonate and sequentially comprises an inner core and more than one shell layer from inside to outside, and mole concentration of the corresponding Ni is gradually reduced from the innercore to the shell layers sequentially arranged outside. The invention also provides a surface coated lithium nickel manganese cobalt composite material prepared by employing the precursor and the lithium ion battery employing the composite material as a positive electrode material. By the precursor, the problems that the synthesis process of a ternary nickel manganese cobalt positive electrode material is not mature and is complicated, the precursor research is neglected and the improvement of the performance of the ternary nickel manganese cobalt material is limited are solved. In the batteryprepared from a nickel-rich gradient-concentration ternary nickel manganese cobalt positive electrode material, the initial discharge specific capacity under 0.1C rate is larger 194mAh/g, the initialcharge-discharge efficiency is larger than 92%, and the capacity retention rate after circulation for 300 times under 1C rate is larger than 80%.

The present invention discloses a chocolate composition, a coating layer and a preparation method thereof and frozen drink coated with the coating layer. The chocolate composition is prepared by a combined use of oil and an emulsifier at a specific ratio, reduces viscosity, improves fluidity of slurry, finally improves uniformity of coating of the chocolate coating layer, can flexibly adjust thickness of the chocolate coating layer, can prepare the chocolate coating layer of 2 mm or more, and can also prepare the chocolate coating layer with the thickness of 1 mm or less. At the same time, through combined cooperation and synergistic effects of a sweetener, edible oil, an emulsifier and chocolate at a specific ratio, the preparation method also avoids problems of cracking, material discharging and waxing feeling problems caused by too thin thickness of the chocolate coating layer, improves coating effects of the chocolate coating layer, and also improves taste and mouthfeel of the chocolate coating layer.

A composition for imprints comprising a polymerizable monomer, a photopolymerization initiator, and a polymer having a functional group with at least one of a fluorine atom or a silicon atom and having a polymerizable functional group, wherein the polymer has a weight-average molecular weight of at least 2000 and the amount of the polymer is from 0.01 to 20% by mass relative to the polymerizable monomer, is excellent in patternability and mold releasability, capable of forming good patterns and free from a problem of mold contamination.

The invention discloses a composite carbon material, a modified electrode material prepared from the composite carbon material and a lithium ion battery. The composite carbon material contains a firstcarbon material, a second carbon material and a carbon source, wherein the first carbon material and the second carbon material are doped carbon materials. Compared with a conventional manner for firstly coating by virtue of a carbon source for carbonization to obtain a carbon material coating layer, the composite carbon material has the advantages that by introducing a proper amount of the firstcarbon materials and a proper amount of the second carbon materials, on one hand, the use amount of a common carbon source is reduced, and on the other hand, the electrochemical properties of structure stability, electrical conductivity, tap density, volume energy density, rate capability, cycle performance and the like of an electrode material modified by the composite carbon material can be cooperatively improved. By coating and modifying lithium iron phosphate by virtue of the composite carbon material, the rate capability and cycling stability of lithium iron phosphate can be substantially improved, the specific discharge capacity of lithium iron phosphate is more than or equal to 149mAh/g under a 6C rate condition, and the capacity retention ratio is more than or equal to 97% after 60 cycles.

A conventional method for forming an insulating film on a magnet has a difficulty in achieving sufficient improvement in magnetic characteristics due to nonuniformity of a coating film, and an extended time and higher temperature which are required in a thermal treatment. In order to solve the problems, the present invention provides a treating solution composed of an alcohol based solvent and a rare earth fluoride or alkaline earth metal fluoride dispersing in the solvent. In the treating solution, at least one X-ray diffraction peak has a half-value width larger than 1°. The present invention also provides a method for forming an insulating film using the treating solution.

A piezoelectric actuator includes a square suspension plate, an outer frame, plural brackets and a square piezoelectric ceramic plate. The outer frame is arranged around the suspension plate. A second surface of the outer frame and a second surface of the suspension plate are coplanar with each other. The plural brackets are perpendicularly connected between the suspension plate and the outer frame for elastically supporting the suspension plate. Each bracket has a length in a range between 1.11 mm and 1.21 mm and a width in a range between 0.2 mm and 0.6 mm. A length of the piezoelectric ceramic plate is not larger than a length of the suspension plate. The piezoelectric ceramic plate is attached on a first surface of the suspension plate.

The invention relates to the technical field of thin film materials, in particular to a multifunctional fully-automatic ion-plating machine for the deposition of a cutting tool coating. The machine comprises a vacuum chamber, bipolar pulse magnetron sputtering targets, a rectangular anode layer gas ion source, a high-power pulse magnetron sputtering source, a bias power supply, cathode arc sources, a workpiece rack and a support, wherein the bipolar pulse magnetron sputtering targets, the anode layer gas ion source, the high-power pulse magnetron sputtering source, the bias power supply and the cathode arc sources are controlled through five groups of independent switches respectively. Due to the adoption of the structure, pure metal, alloy and reaction film layers can be prepared, and multi-element and multilayer nanometer composite coatings and oxygen-containing coatings can also be prepared to meet the requirements of metal cutting tools with different shapes and sizes on high-speed machining.

In accordance with one embodiment of the invention, a workpiece having a smaller cross sectional dimension (e.g., diameter) is centered within a workpiece having a larger cross sectional dimension, with the workpieces being electrically connected. In this embodiment, surfaces of the two workpieces can be coated simultaneously, either with the same coating material or different coating materials. In another embodiment, holes are located along the length of an internal metal tube which functions as a gas distribution injector and anode holder. A ceramic liner may be placed inside the internal metal tube, with a conductive wire within the ceramic liner. The internal metal tube may be biased as a cathode, while the internal wire is biased as an anode. The hollow cathode effect is applied in all spaces directly adjacent to the surface or surfaces being coated. In some applications, different surfaces being coated are biased at different voltages.

A level electroplating equipment comprises essentially a group of plating-solution baffles, a group of first electrodes, a group of reticulated, surface-like or needle-like second electrodes, and an electrode regeneration and plating-solution recycling system. When the baseplate is sent horizontally for positioning, the plating-solution slowly flowing plate and the contact cathode will clamp and conduct electricity for the baseplate; then by filling plating solution and contacting with the anode at upper, an electro plating environment is formed so as to carry out one-side plating for the baseplate at the side of cathode; or by filling electro-deposition solution and contacting with the anode at upper, an electro-deposition environment is formed, so as to carry out one-side electro deposition at the side of the anode for color optic filter pigment, dyestuff, or electro conductive photoresistor. The invention provides a level electroplating/ electro-deposition/ electrode-free electroplating equipment, can be used for electroplating an one-side even and horizontal film on the upper surface of a baseplate, for electro deposition of color optic filter pigment, dyestuff, or electro conductive photoresistor, or for depositing metallic film on a single side by chemical oxidation-reduction method.

The coating method includes the steps of dissolving coating precursor(s) in a solvent to form a precursor solution: adding with mixing a miscible diluent to the precursor solution to form a coating solution; admixing solid particles to the coating solution to form a coating slurry, with the particles surrounded with the coating solution; spraying the coating slurry to form droplets containing at least one particle; passing the droplets through a drying zone where the droplets are dried and form dry particles coated with a coating material formed from the coating precursor(s); heat-treating the coating material on the particles emanating from the drying zone to remove volatile matter on the coating material, to improve integrity of the coating material and/or to effect another objective; and collecting dry coated particles.

An apparatus for coating surfaces of a workpiece is configured to establish a pressure gradient within internal passageways through the workpiece, so that the coating within the internal passageways exhibits intended characteristics, such as those relating to smoothness or hardness. The coating apparatus may include any or all of a number of cooperative systems, including a plasma generation system, a manipulable workpiece support system, an ionization excitation system configured to increase ionization within or around the workpiece, a biasing system for applying a selected voltage pattern to the workpiece, and a two-chamber system that enables the plasma generation to take place at a first selected pressure and the deposition to occur at a second selected pressure.

In a system for coating human skin, a coating composition, such as a cosmetic or medical formulation, is uniformly coated over the entire body or selected parts of the body of the person being coated. The system includes atomization of the coating composition, containment of the atomized spray, and residual recovery which together yield a novel method for applying coating compositions.

Disclosed are polysilazane, a method of synthesizing the polysilazane, a composition for manufacturing a semiconductor device, and a method of manufacturing a semiconductor device using the composition. The polysilazane is synthesized through a reaction, under a catalyst, between dichlorosilane, trichlorosilane, and ammonia added in a reaction solvent as a reactant. In this instance, a polystyrene conversion weight average molecular weight of the polysilazane is about 2,000 to 30,000.