Method for manufacturing coated ceramics and firing furnace for carrying out the manufacturing method.
The method addresses the inefficiencies and cracking issues in ceramic coating processes by using localized microwave heating within an insulating environment, achieving energy-efficient and crack-resistant ceramic coating application.
JP7886310B2Active Publication Date: 2026-07-07NGK CORP
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- NGK CORP
- Filing Date
- 2023-11-14
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
Existing methods for applying coatings to ceramics require long firing times and high energy consumption, and rapid heating can cause thermal stress leading to cracking due to uneven temperature distribution.
Method used
A method involving a columnar ceramic structure with localized heating using microwave-absorbing heat-generating members covered by insulating material, focusing heat on the coating areas while minimizing heating of the ceramic body, thereby reducing energy consumption and thermal stress.
Benefits of technology
Enables efficient, energy-saving firing of ceramic coatings with reduced crack formation by localized heating, utilizing a microwave-based firing furnace.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 0007886310000003 
Figure 0007886310000004 
Figure 0007886310000005
Abstract
To provide a manufacturing method of a ceramic with coating, capable of firing a coating material in an energy saving manner while suppressing crack formation.SOLUTION: A manufacturing method of a ceramic with coating includes the steps of: (A) preparing a ceramic applied with a coating material on at least a part of one or both of a first bottom face and a second bottom face; (B) preparing an assembly of the ceramic and a pyrogenic member with the whole body covered with a heat insulation material under a condition that at least one pyrogenic member is arranged opposed to the one or both having been applied with the coating material, of the first bottom face and the second bottom face and a heat insulation material rotates around a side face of the ceramic while coming into contact with the side face; and (C) firing the coating material applied on at least a part of the one or both of the first bottom face and the second bottom face opposed to the at least one pyrogenic member by heat evolution of the at least one pyrogenic member of the assembly.SELECTED DRAWING: Figure 1
Need to check novelty before this filing date? Find Prior Art