Aluminum oxynitride (AlON) powder, a synthesis method thereof by direct nitridation under high pressure and use thereof, which belongs to the field of ceramic powder are presented. In the method, pure-phase AlON powder is synthesized by direct nitridation under high pressure with aluminum powder and alumina powder as starting materials. The powder has a spherical-like morphology, with a particle size ranging from 5 μm to 15 μm. The powder has good dispersibility and uniformity, and higher sintering activity. AlON transparent ceramic (1.2 mm thick) prepared from the AlON powder has a linear transmittance of more than 84%. The batch yield is on kilogram-scale; therefore, the method is suitable for large-scale production of the AlON powder.

A ceramic material that has a high resistivity and high corrosion resistance according to the present invention contains magnesium-aluminum oxynitride and has a carbon content of 0.005 to 0.275 mass %.

A decoration member for a cosmetic container including: a color expression layer having a light reflecting layer and a light absorbing layer provided on the light reflecting layer; and a substrate provided on one surface of the color expression layer.

A decoration member for a cosmetic container including: a color expression layer having a light reflecting layer and a light absorbing layer provided on the light reflecting layer; and a substrate provided on one surface of the color expression layer.

The present application relates to a decoration member including a substrate layer having a convex structure or a concave structure arranged two-dimensionally, and a method for preparing the decoration member.

A phosphor including a fired product having a composition represented by general formula M.sup.1.sub.aM.sup.2.sub.bM.sup.3.sub.cAl.sub.3N.sub.4-dO.sub.d, wherein M.sup.1 is one or more elements selected from Sr, Mg, Ca, and Ba, M.sup.2 is one or more elements selected from Li, Na, and K, and M.sup.3 is one or more elements selected from Eu, Ce, and Mn, and wherein a, b, c, and d satisfy each of the following formulas: 0.850≤a≤1.150, 0.850≤b≤1.150, 0.001≤c≤0.010, 0.10<d≤0.20, and 0.09≤d/(a+d)<0.20.

The present application relates to a decoration member including a pattern layer provided on one surface of the substrate and including a convex structure or a concave structure arranged two-dimensionally, and a method for preparing the decoration member.

The present application relates to a decorative member including a color developing layer including a light reflective layer and a light absorbing layer provided on the light reflective layer; and a substrate provided on one surface of the color developing layer, wherein the light absorbing layer includes a copper oxide (Cu.sub.aO.sub.x).

The present application relates to a decorative member including a color developing layer including a light reflective layer and a light absorbing layer provided on the light reflective layer; and a substrate provided on one surface of the color developing layer, wherein the light absorbing layer includes a copper oxide (Cu.sub.aO.sub.x).

The present application relates to a decoration member including a substrate layer having a convex structure or a concave structure arranged two-dimensionally, and a method for preparing the decoration member.