6 results about "Chemical potential" patented technology

The application provides a mudstone non-destructive and efficient dispersion method and relates to the technical field of mudstone dispersion. The mudstone non-destructive and efficient dispersion method comprises the following steps: step 1: sample grading pretreatment: according to the mudstone cementation strength, a grading crushing strategy is implemented, wherein high cementation strength mudstone is crushed to 0.1-0.2 cm granular, low cementation strength mudstone is crushed to 0.2-0.3 cm granular; a sample with a particle size deviation of no more than 0.05 cm is screened, after the sample surface impurities are removed by using deionized water, the sample is placed in a 50-70 DEG C constant temperature environment for drying for 10-14 hours to remove free water until the constant weight. The application constructs a three-stage composite salt solution gradient from low concentration to high concentration to balanced concentration, and is supplemented with a pulse vacuum negative pressure to break the mudstone pore gas lock effect; the first stage is to build a channel by shallow wetting, the second stage is to maximize the salt loading by near-saturation concentration, and the third stage is to utilize the chemical potential gradient by concentration adjustment to drive the surface microcrystals to diffuse inward, avoid the surface crust blockage and ensure the uniform penetration of the salt solution into the mudstone.

The invention discloses a tailing filling body damage prediction method based on a phase change theory and acoustic emission parameters, and belongs to the field of structural health monitoring, and the method comprises the following steps: firstly, obtaining component and crystal structure data of a material, and constructing a self-consistent free energy function with a clear physical image; and then, inputting a free energy function into the phase change theoretical model, calculating and comparing free energy of different phases under different components and temperatures by solving equilibrium state conditions with the chemical potential phase as the core, thereby determining the thermodynamic stable phase and the coexistence relationship thereof, and finally outputting a predicted phase diagram. The method directly starts from the basic physical parameters of the material, the dependence on a large amount of empirical data and parameter fitting is remarkably reduced, the phase equilibrium relation between a new material system and a complex multi-element system can be efficiently and reliably predicted, and an efficient calculation tool is provided for material design and development.

The invention discloses a high-density solid hydrogen storage material based on TiFe alloy doping modification and a preparation method of the high-density solid hydrogen storage material, and particularly relates to the field of solid hydrogen storage materials and hydrogen energy application. The crystal structure of the material comprises a first sub-lattice, a second sub-lattice and an interstitial site set which are mutually occupied and independent; wherein the first sub-lattice is a Ti-site sub-lattice, and the Ti-site sub-lattice takes a Ti element as a matrix and contains at least one of a first stabilizing element Zr and a second stabilizing element Al. In the preparation process, preferential solid solution of various functional elements in gemini crystal lattices and space occupation distribution of interstitial elements are regulated and controlled, migration of doped atoms in the hydrogenation cycle process and formation of segregation bands are inhibited from the double aspects of dynamics and thermodynamics, and therefore chemical potential inverse wells are eliminated, and the reversible hydrogen desorption efficiency is improved.

The invention provides a steady-state quantum turbulence generation method and a steady-state quantum turbulence generation system capable of guaranteeing particle number conservation. The method comprises the following steps: constructing an evolution model of the quantum fluid system, wherein the evolution model is obtained by introducing an external driving item and a particle number conservation dissipation item based on a Gross-Pitaevskii equation; the external driving item is an additional external potential of spatio-temporal variation and is used for injecting energy into the system; the particle number conservation dissipation item depends on the time change rate of the particle number density and is used for dissipating the energy of the system; the external driving item and the particle number conservation dissipation item are configured to keep the total particle number conservation of the system; and performing time evolution on the quantum fluid system based on the evolution model until the system reaches a steady-state quantum turbulence state of total kinetic energy dynamic balance. According to the method, the loss of chemical potential compensation particles does not need to be adjusted, quantum turbulence structures of different scales can be stably generated and regulated, and the physical self-consistency and long-term stability of the quantum fluid evolution process are guaranteed.

The invention belongs to the technical field of perovskite film or crystal growth, and particularly relates to a chemical potential and thermodynamic coordinated regulation method for realizing on-demand controllable preparation of a perovskite phase and a non-perovskite phase. Fixing the main stoichiometric ratio of A-site cations and B-site cations of perovskite, and regulating and controlling the composition and content of two phase components of a precursor solution at normal temperature by adjusting the content of halogen acid as a thermodynamic perturbing agent; thermodynamic induction parameters, namely temperature T and time t, are adopted to synergistically induce phase transformation; separating the obtained precipitated phase particles from the solution, and drying at low temperature to obtain a perovskite main phase pure material and a non-perovskite second phase pure material; the problems that second-phase impurities are easily mixed in the preparation process of the perovskite main phase and second-phase by-products are difficult to prepare are solved at the same time. The pure material prepared by using the two-phase conversion process can be used for manufacturing a thin film or crystal perovskite detector, so that the defect density of the device is remarkably reduced, the non-radiative recombination is inhibited, the energy band structure is optimized, and the charge transport is promoted, thereby improving the performance of the device.

This invention relates to the field of electrolyte preparation process control technology, and discloses a method for preparing low-toxicity, cyanide-free silver electroplating electrolyte based on process control. The method includes: preparing a basic electroplating solution and setting theoretical steady-state parameters for producing the optimal dense plating layer; collecting data on the current effective activity of silver ions, current pH value, and current conductivity of the solution; obtaining real-time absolute temperature and standard reference temperature to determine the equivalent conductivity; constructing a replenishment control model coupling silver ion activity deviation, pH deviation, and conductivity decay, calculating the dynamic replenishment volumetric flow rate of the regulator, and using a nonlinear amplification factor reflecting the aging degree of the plating solution to dynamically compensate for the increase in kinematic viscosity and mass transfer resistance caused by organic degradation and byproduct accumulation, enabling the system to replenish its inherent chemical potential energy consumption and solving the problem of apparent stability but inherent aging of the formulation; implementing an anti-vibration mechanism and adaptively determining the aging endpoint during the aging stage to complete the preparation of the electrolyte.