Heat insulating material containing a porous sintered body formed of MgAl2O4
US9938195B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Jun 23, 2015 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Aug 17, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L59/028
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A heat insulating material includes a porous sintered body formed of MgAl2O4 and having a porosity of 60% or more and less than 73%. In the heat insulating material, pores having a pore diameter of 0.8 μm or more and less than 10 μm occupy 30 vol % or more and less than 90 vol % of a total pore volume, pores having a pore diameter of 0.01 μm or more and less than 0.8 μm occupy 10 vol % or more and less than 60 vol % of the total pore volume, the thermal conductivity at 20° C. or higher and 1500° C. or lower is 0.45 W/(m·K) or less, and the compressive strength is 2 MPa or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.