Heat-insulating tile and multilayered heat-insulating material

The use of porous carbon with a high-melting-point metal carbide coating and optimized thickness ratio in a multilayer insulation material addresses the issues of wear and corrosion in high-temperature environments, improving durability and energy efficiency.

WO2026154763A1PCT designated stage Publication Date: 2026-07-23KK TOYOTA CHUO KENKYUSHO
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
KK TOYOTA CHUO KENKYUSHO
Filing Date
2025-10-28
Publication Date
2026-07-23

AI Technical Summary

Technical Problem

Existing insulation materials used in high-temperature environments, such as those exceeding 2300°C, suffer from rapid wear, corrosion, and increased maintenance costs due to high equilibrium vapor pressure, leading to elevated material and operational costs.

Method used

A thermal insulation tile comprising a base material made of porous carbon with a high-melting-point metal carbide coating, and a multilayer insulation material using these tiles on the high-temperature side of a molded insulation material, optimizing the thickness ratio to enhance durability and reduce heater power requirements.

Benefits of technology

The solution provides enhanced thermal insulation and durability in high-temperature corrosive environments, reducing wear and tear of the insulation material while lowering the required heater power, thus extending the lifespan and reducing operational costs.

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Abstract

This heat-insulating tile comprises a base A made of porous carbon and a coating layer formed on at least one surface of the base A and including a high-melting-point metal carbide, wherein the coating layer has a relative density of 95% or higher. The "porous carbon" is a sintered carbon body having a bulk density of 1.1 g / cm3 to 1.6 g / cm3. The "high-melting-point metal carbide" is a carbide having a melting point of 2000°C or higher and containing at least one metal. This multilayered heat-insulating material comprises a base B made of a formed heat-insulating material including carbon fibers and the heat-insulating tile disposed on a surface of the base B, wherein the heat-insulating tile has been disposed on the surface of the base B so that the coating layer is on the external atmosphere side.
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