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Impregnatable high-density, brittle material structure

A brittle material and brittle technology, applied in the field of new structures, can solve the problems of low heat resistance temperature, inability to withstand the sintering temperature of oxide ceramics, oxidizing atmosphere, etc., and achieve high crystallinity, excellent wettability, and contact angle. low effect

Pending Publication Date: 2022-01-18
NAT INST OF ADVANCED IND SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Oxide ceramics generally require very high firing temperatures for high-density sintering, but cheap and flexible metals such as plastics, aluminum, and copper used in flexible devices and oxide all-solid-state lithium-ion secondary batteries The heat-resistant temperature of foil, etc. is very low, and cannot withstand the sintering temperature and oxidizing atmosphere of oxide ceramics

Method used

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  • Impregnatable high-density, brittle material structure
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  • Impregnatable high-density, brittle material structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Void structure of highly dense condensed film using PZT particles

[0092] Next, a specific manufacturing method of the structure of the present invention will be described.

[0093] PZT particles (average particle shape: 1550 nm) serving as first particles adhered to the surface of stainless steel SUS304 (film thickness: 20 μm).

[0094] The first PZT particles were synthesized by the molten salt method using PZT-LQ powder manufactured by Sakai Chemical Industries. The first PZT particles were weighed using a microanalytical balance (SHIMADZU, model: AEM-5200), moved to a 50cc glass container filled with ethanol, and ultrasonicated at 350W and 20kHz using an ultrasonic homogenizer (manufactured by SONIC & MATERIALS, model: VCX750). After dispersing for 1 minute, the solution was transferred to an air brush coating system (manufactured by GSI Creos, PS311 air brush kit), and sprayed on the SUS304 of the transfer plate prepared in advance on a hot plate set at 60°C. T...

Embodiment 2

[0134] Physical properties of a highly dense cohesive film using PZT particles

[0135] Next, the leakage current characteristics and polarization characteristics of the highly dense aggregate film of the present invention were investigated.

[0136] In order to evaluate electrical physical properties, an Au electrode having an area of ​​0.5 mm×0.5 mm and a thickness of 400 nm was deposited on the surface of each PZT by a sputtering method. Figure 6 It shows the leakage current characteristics of a PZT compact film with a porosity of about 35% impregnated with silicone oil, and the change in leakage current characteristics before and after silicone oil impregnation of a PZT highly dense cohesive film with a porosity of 11% to 15%. , A diagram showing leakage current characteristics of a PZT highly dense condensed film impregnated with silicone oil and having a porosity of about 10% or less.

[0137] In a normal compressed powder with a porosity of about 35%, even if the sil...

Embodiment 3

[0141] Lamination of highly dense aggregates sandwiched between electrode layers ( Figure 8 )

[0142] (1) Manufacture of Unit 1

[0143] PZT particles (average particle shape: 1550 nm) serving as first particles adhered to the surface of SUS304 (film thickness: 20 μm).

[0144] The first PZT particles were synthesized by the molten salt method using PZT-LQ powder manufactured by Sakai Chemical Industries. Weigh the first PZT particles with a micro-analytical balance (SHIMADZU, model: AEM-5200), move to a 50cc glass container with ethanol, and use an ultrasonic homogenizer (manufactured by SONIC & MATERIALS, model: VCX750) with 350W, 20kHz ultrasonic waves After dispersing for 1 minute, the solution was transferred to an air brush coating system (manufactured by GSI Creos, PS311 air brush kit), and sprayed on the SUS304 of the transfer plate prepared in advance on a hot plate set at 60°C. This attaches the first PZT particles to the SUS304 surface.

[0145] The second pa...

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Abstract

To provide a high-density oxide ceramic structure that does not require the sintering, processes under vacuum or reduced pressure, crushing of raw material fine particles, and the like that were required in the past to be able to produce a high-density oxide ceramic structure, is capable of suppressing the associated generation of intra-crystalline defects and occurrence of internal stress, and also can be impregnated with nano particles dispersed in liquid silicone oil, resins, polymers, and solvents. A highly dense aggregate of brittle material fine particles, wherein the highly dense aggregate is characterized by having interfaces where the particles contact each other and voids where the particles do not contact each other between the brittle material fine particles that constitute the highly density aggregate, by the porosity which is the volume ratio of the voids to the highly dense aggregate as a whole being 20% or less, and by the ratio of the volume of voids communicating with the apparent outer surface of the highly dense aggregate to the void volume of the whole of the highly dense aggregate being 65% or higher.

Description

technical field [0001] The present invention relates to a new structure of oxide ceramics. [0002] Oxide ceramics are widely used as electronic ceramics utilizing piezoelectricity, dielectric properties, and the like. Recently, in order to adapt to wearable devices, there is a demand for the development of "flexible devices" that combine soft organic materials such as plastics with electronic ceramics. [0003] In addition, for the "oxide all-solid lithium ion secondary battery" that is attracting attention as a next-generation storage battery, it is required to prepare and prepare oxide ceramic active materials, solid electrolytes, and additives for supplementing conductivity, etc., without gaps and uniformly stacked. It is a very high technology that the positive electrode composite material and the negative electrode composite material are formed on the metal foil, and these positive electrode composite materials and negative electrode composite materials are joined witho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562H01M10/0525H01M10/42
CPCH01M10/0562H01M10/0525H01M10/4235H01M2300/0091H01M10/056C04B35/491Y02E60/10C04B2235/77C04B2235/5445C04B2235/5409C04B41/483C04B41/4853C04B41/83C04B2111/00853C04B41/009H01M2300/0071H01M2300/0082H01M4/62C04B38/0038C04B2235/616C04B2235/5472C04B38/00C04B38/0054C04B38/0058C04B38/0074C04B41/4539C04B41/472C04B2235/5454C04B2235/96H01M4/366
Inventor 铃木宗泰明渡纯金泽周介板垣元士长谷川竣土屋哲男牛岛洋史
Owner NAT INST OF ADVANCED IND SCI & TECH
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