Luminous jade and preparing process thereof

A jade and artificial technology, applied in the field of artificial luminous jade and its manufacturing, can solve the problems of unclear materials, luminous gemstones that cannot achieve performance, and single raw material varieties.

Inactive Publication Date: 2005-03-09

肖志国

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AI-Extracted Technical Summary

Problems solved by technology

The synthesis temperature is 1550-1700°C, the pressure is more than 2 atmospheres, and it is a two-step firing (the first step is to synthesize raw materials)...

Abstract

A luminous jade has a chemical formula: aM beta.bM'beta.cSiO2.dAl2O3.eEu2O3.fB2O3.gLn2O3.hZrO2, where M is one or more of Ca, Sr, Ba, Mg, Zn and Cd; M' is one or more of Be, Mg, Zn and Cd; beta is one or both of O and S; Ln is one or more of Ce, Pr, La, Dy, Ho, Nd, Er, Bi, Ga, Sb, Lu, Y, Mn, Mo, Cr, Sn, Cu and Tm; and a,b,c,d,e,f,g and h are mole ratios. It is prepared through mixing and high-temp sintering, and features compact mass, high toughness, and long luminous time after radiated by light.

Application Domain

Luminescent compositions

Technology Topic

ChemistryGreek letter beta +3

Examples

Experimental program(6)

Example Embodiment

[0040] Example 1 Yellow luminous jade

[0041] Select a=2.0, b=1.1, c=1.8, d=0.01, e=0.03, f=0.1, g=0.05, h=0, M=Sr 0.05 Ca 0.95 , M′=Mg 0.95 Zn 0.05 , β=0

[0042] raw material

[0043] The above-mentioned raw materials are weighed according to the weight ratio, grinded and mixed well, pressed into a cylinder under 10MPa pressure, put into a plastic mold, further compacted by 200MPa cold isostatic pressing, and the atmosphere is 90% N. 2 +10%H 2 In the reducing atmosphere furnace, the temperature is gradually raised to 1150°C, and after 5 hours of constant temperature, the temperature is gradually lowered to room temperature to obtain yellow luminous artificial luminous jade.

Example Embodiment

[0044] Example 2 Blue luminous jade

[0045] raw material

[0046] The above-mentioned raw materials are weighed according to the weight ratio, and after being ground and mixed, they are put into the mold of the hot-pressing furnace, and the atmosphere is 95% N. 2 +5%H 2 In a reducing atmosphere, gradually increase the temperature and pressure to 1000 ° C, sinter for 1 hour at 30 MPa, and gradually drop to room temperature to obtain artificial luminous blue jade.

Example Embodiment

[0047] Example 3 Dark blue luminous jade

[0048] raw material

[0049] The above-mentioned raw materials are weighed according to the weight ratio, and after finely ground and mixed, 2 Sintered in a high temperature furnace at 1300℃ for 4 hours. After cooling, the massive sintered body was ground finely. After passing through a 400-mesh sieve, the sieved powder was compacted into a certain shape with an aqueous solution with CMC added. After drying, In a high-temperature furnace with N2, the temperature is gradually increased to 1420 ° C, and after 5 hours of constant temperature, it is gradually lowered to room temperature to obtain a deep blue artificial luminous jade.

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Description & Claims & Application Information

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