| abstract |
In the present invention, granules of various shapes and sizes can be manufactured from powder, and as a surface oxide layer having moisture resistance after heat treatment is formed by the addition of a donor, the low moisture absorption of MgO is improved in magnesia and its manufacturing method. Disclosed. In addition, the present invention discloses a high thermal conductivity magnesia composition and magnesia ceramics using the same which can lower the sintering temperature by adding a donor to MgO and improve the thermal diffusion coefficient. The method of manufacturing magnesia according to the present invention comprises the steps of (a) adding a donor and an organic solvent to an MgO powder to form a mixture; (b) drying the mixture; (c) forming a donor-added MgO granule from the dried mixture; And (d) heat-treating the MgO granule to which the donor has been added; heat-treating the MgO granule to which the donor has been added to form a surface oxide layer having a composition different from the inside of the MgO granule on the surface of the MgO granule. Is done. |