43results about How to "Uniform phase distribution" patented technology

The present invention relates to a general suspension granulation process for the preparation of sintered metal-graphite composites, comprising the steps of: suspending graphite particles in an air stream in a fluidization chamber; introducing bonded particles into the fluidization chamber agent solution; introduce metal powder into the fluidization chamber; after a preset fluidization time, the graphite particles are bonded with the metal powder through the binder to form core particles; time to make each graphite particle adhere to a metal layer of a certain thickness to obtain a core particle of a predetermined critical size. At this time, the core particle falls and Collected in the material bin at the bottom of the bed. The method of the present invention has strong versatility, and can be applied to the raw material granulation process of various metal-graphite composite material products. The obtained composite powder core has uniform distribution of phases, uniform density, and good mechanical properties of the object made later. .

A multi-phase voltage-controlled oscillator, which includes at least one ring oscillator unit and a resistance ring, the ring oscillator unit is formed by a plurality of phase delay components connected in series, and the resistance ring is formed by a plurality of resistance components connected in series The series connection node in each ring oscillation unit is electrically connected to the series connection node in the resistance ring, so that the ring oscillation unit can generate multiple oscillation signals with uniform phase difference.

The invention discloses a method for synthesizing an ammonium dihydrogen phosphate compound. The method comprises the following steps: dissolving ammonium dihydrogen phosphate in deionized water, preparing a super-saturated solution at a certain temperature, dissolving organic sugar in deionized water, preparing an organic sugar solution with a certain mass percent at the temperature, uniformly mixing the two solutions in a stirring state, and standing for later use; and adding the mixed solution into an organic solvent in a stirring state according to a certain speed, standing at room temperature after the addition is finished, filtering to obtain a crystallized product, drying the obtained crystallized product at low temperature, and preparing to obtain the ammonium dihydrogen phosphate compound. According to the invention, ammonium dihydrogen phosphate and organic sugar can be mixed on the molecular scale, and the method has the characteristic that the phase distribution is uniform, so that a phenomenon that the carbon cladding is non-uniform due to non-uniform mixing of a carbon source in the process of synthesizing lithium iron phosphate in an organic solvent system by taking ammonium dihydrogen phosphate as a raw material.

The invention relates to a preparation method of titanium nitride-ferrous metal ceramics. The preparation method comprises the steps of preparing a titanium-ferrous (Ti-Fe) alloy cast ingot with a vacuum melting method to enable Fe to exist in Ti in a form of solid solution and TiFe intermediate phase; carrying out hydrogenation embrittlement, ball-milling crushing and dehydrogenation and nitrogen treatment on the Ti-Fe alloy cast ingot to obtain titanium nitride-ferrous (TiN-Fe) metal-ceramic composite powder; sintering the composite powder subjected to green compacting to obtain a TiN-Fe metal-ceramic material. The TiN-Fe metal-ceramic composite powder prepared by the method provided by the invention consists of two phases, i.e. TiN and Fe, and is uniform in powder size and good in fluidity, the TiN-Fe block metal-ceramic material obtained by sintering the TiN-Fe metal-ceramic composite powder subjected to green compacting is uniform in phase distribution and relatively high in density, and the average microscopy Vickers hardness of the materials reaches 1023 HV.