2results about How to "Lower densification temperature" patented technology

The invention relates to the technical field of membrane separation, and discloses a preparation method of a high-performance solid electrolyte membrane Joule hot pressed sintering. According to the method, a Joule hot pressing sintering process is adopted, solid electrolyte powder is taken as a raw material, a proper amount of powder is weighed and put into a mold of Joule hot pressing equipment, and pressure is applied to an upper graphite plate and a lower graphite plate in a vacuum or inert gas environment. Through the synergistic effect of external pressure and Joule heat, the temperature of the material can be rapidly increased to 800-1500 DEG C in an extremely short time, and heat-preservation sintering is completed, so that the sintering period is remarkably shortened, the preparation efficiency is improved, and a compact and high-performance solid electrolyte membrane is obtained. Compared with a traditional heating furnace which needs at least more than 3 hours in heating time and Joule hot pressing is controlled within 1 minute, the heating time can be effectively shortened by at least 90% or more, and the prepared solid electrolyte membrane has high density and low defects, shows excellent ion separation performance and is suitable for industrial production. And a reference thought is provided for related fields such as efficient recovery and extraction of lithium resources.

The application discloses a root system structure bionic high-temperature-resistant protective coating and a preparation method thereof. The coating comprises a root system structure module and a soil structure module. The root system structure module is a boride-silicon-based ceramic phase, and the soil structure module is a low-melting-point glass phase. The low-melting-point glass phase is stabilized by the boride-silicon-based ceramic phase in the composite coating through bionic root system structure. The preparation method comprises the following steps: mixing raw materials, densification treatment and polishing. Compared with the prior art, the application has the advantages that the low-melting-point glass in the high-temperature-resistant protective coating is effectively compounded, the softening modification effect of the glass phase is utilized, the densification temperature of the coating is reduced, the sealing degree of the oxygen-blocking structure of the coating is further promoted, the oxygen-blocking defect problem of the internal structure of the coating is solved, and the advantages of energy saving and oxygen-blocking strengthening of the coating are achieved.