Method for solid-state single crystal growth
AssigneeCeracomp Co., Ltd.
InventorsHo-Yong LEE, Jong-Bong LEE, Tae-Moo HUR, Dong-Ho KIM
Life of this patent
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Abstract
By controlling the average size of matrix grains of polycrystalline bodies to more than a critical size at which an abnormal, exaggerated or discontinuous grain growth ends, and less than twice the critical size, large single crystals enough for practical use may be made even without occurring abnormal grain growth in polycrystalline bodies only through a heat treatment process without using a melting process and a special apparatus, thereby allowing the mass production of the large single crystals at low costs with high reproduction possibility.
Claims10
A method for growing solid-state single crystals of materials without occurrence of abnormal grain growth in a polycrystalline body comprising:
- making an average size R of matrix grains of the polycrystalline body to have more than Rc and less than 2Rc, Rc being a critical size of the matrix grains at which abnormal grain growth ends;
- adjoining a seed single crystal to the polycrystalline body;
- and
- heat-treating the seed single crystal and polycrystalline body to continue to grow the seed single crystal into the polycrystalline body.
Dependencies are inferred from the claim text.