Method for manufacturing sintered body, structure, and composite structure

Patent metadata

Field	Value
Publication number	US-11607728-B2
Application number	US-201916726295-A
Country	US
Kind code	B2
Filing date	Dec 24, 2019
Priority date	Jul 5, 2017
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

A method for manufacturing a sintered body, the method including heating a mixture that contains a plurality of particles of a metal oxide having a spinel-type structure, and a metal acetylacetonate under pressure at a temperature of from a melting point or higher of the metal acetylacetonate to 600° C. or lower, to form a sintered body that contains the metal oxide having the spinel-type structure.

First claim

The invention claimed is:

1. A method for manufacturing a sintered body, the method comprising:
mixing a plurality of particles of at least one metal oxide having a spinel-type structure with at least one metal acetylacetonate to produce a mixture; and
heating the mixture in the presence of water or water vapor and under pressure and at a temperature of from a melting point or higher of the at least one metal acetylacetonate to 600° C. or lower,
wherein the water or water vapor is present in the mixture in an amount such that there is 20 wt % or less of water relative to a total weight of the plurality of particles of the at least one metal oxide having the spinel-type structure.

2. The method according to claim 1 , wherein the metal acetylacetonate contains a metal element that is the same as at least one metal element contained in the metal oxide.

3. The method according to claim 1 , wherein the mixture further contains at least one of a metal material, a resin material, or a carbon material.

4. The method according to claim 1 , wherein the metal oxide is ferrite.

5. The method according to claim 1 , wherein the metal oxide contains Ni and Mn.

6. The method according to claim 1 , wherein the metal oxide contains one or more of Li, Mg, Al, Cr, Mn, Fe, Co, Ni, Cu, and Zn.

7. The method according to claim 1 , wherein the pressure 1 MPa to 5000 MPa.

8. The method according to claim 1 , wherein the plurality of particles of the metal oxide include at least two particles having different average particle sizes.

Assignees

• Murata Manufacturing Co

Inventors

• Funahashi Shuichi

Classifications

• C04B2235/763

  Spinel structure AB2O4 · CPC title

• C04B2235/3262

  Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO · CPC title

• C04B2235/48

  Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins · CPC title

• C04B2235/44

  Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate · CPC title

• C04B2235/405

  Iron group metals · CPC title