Method for producing β-sialon phosphor
First Claim
1. A production method of a β
- -sialon phosphor that europium ions are solid-solved in β
-sialon, comprising;
a mixing process for mixing raw materials of the β
-sialon phosphor;
a burning process for burning the raw materials after the mixing process to form the β
-sialon phosphor;
a HIP treatment process in which the β
-sialon phosphor after the burning process is subjected to a HIP (Hot Isostatic Pressing) treatment;
an annealing process in which the β
-sialon phosphor after the HIP treatment process is subjected to an annealing treatment; and
an acid treatment process in which the β
-sialon phosphor after the annealing process is subjected to an acid treatment, wherein;
the HIP treatment process is carried out at 2250°
C. to 2550°
C., andthe annealing process is a process that the β
-sialon phosphor is placed under an inactive gas atmosphere comprising mainly of a gas other than nitrogen at 1350°
C. to 1650°
C., or a process that it is placed in vacuum at 1200°
C. to 1550°
C.
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Accused Products
Abstract
Provided is a production method of a β-sialon phosphor that europium ions are solid-solved in β-sialon, including a mixing process for mixing raw materials of the β-sialon phosphor; a burning process for burning the raw materials after the mixing process to form the β-sialon phosphor; a HIP treatment process in which the β-sialon phosphor after the burning process is subjected to a HIP treatment; an annealing process in which the β-sialon phosphor after the HIP treatment process is subjected to an annealing treatment; and an acid treatment process in which the β-sialon phosphor after the annealing process is subjected to an acid treatment. According to the production method of a β-sialon phosphor, a β-sialon phosphor excellent in luminescence intensity is obtained.
12 Citations
10 Claims
-
1. A production method of a β
- -sialon phosphor that europium ions are solid-solved in β
-sialon, comprising;a mixing process for mixing raw materials of the β
-sialon phosphor;a burning process for burning the raw materials after the mixing process to form the β
-sialon phosphor;a HIP treatment process in which the β
-sialon phosphor after the burning process is subjected to a HIP (Hot Isostatic Pressing) treatment;an annealing process in which the β
-sialon phosphor after the HIP treatment process is subjected to an annealing treatment; andan acid treatment process in which the β
-sialon phosphor after the annealing process is subjected to an acid treatment, wherein;the HIP treatment process is carried out at 2250°
C. to 2550°
C., andthe annealing process is a process that the β
-sialon phosphor is placed under an inactive gas atmosphere comprising mainly of a gas other than nitrogen at 1350°
C. to 1650°
C., or a process that it is placed in vacuum at 1200°
C. to 1550°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- -sialon phosphor that europium ions are solid-solved in β
Specification