Artificial phenomenal gem and preparation method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A gemstone and artificial technology, applied in the field of artificial color-changing gemstones and their preparation, can solve problems such as poor color and luster, achieve the effects of increasing the heating area, strengthening the melting process, and strong adaptability
Active Publication Date: 2018-08-07
东莞市屹泰水晶工艺有限公司
View PDF8 Cites 4 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0006] Patent 200810122029.1 discloses a preparation method of beryllium aluminate crystal-matrix color-changing gemstones. In BeAl2O4 single crystal, three dopants of Cr2O3, Fe2O3, Ti2O3 or NiO
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Example Embodiment
[0042] Example 1,
[0043] Artificial color-changing gemstones, including the following parts by weight:
[0044]
[0045] The flux is B 2 O 3 , The clarifying agent is Sb 2 O 3 .
[0046] A method for preparing artificial color-changing gemstones is characterized in that it comprises the following steps:
[0047] (1) Mix the raw materials in proportions and stir evenly to obtain mixture A;
[0048] (2) Heat the mixture A to 1350°C and keep it for 20 hours, so that the mixture A is completely melted, and the melt B is obtained;
[0049] (3) Cool the melt B to 1200°C, keep it for 4 hours and then pour it into the mold to obtain the shaped gemstone C;
[0050] (4) Annealing the shaped gemstone C to obtain an artificial color-changing gemstone.
[0051] Further, in the step (2), the mixture A is put into an electric melting furnace for heating.
[0052] Further, the annealing in the step (4) includes the following stages:
[0053] (a) In the heating stage, heat the formed gemstone C to 500°C;
...
Example Embodiment
[0060] Example 2
[0061] The difference between Example 2 and Example 1 is that the artificial color-changing gemstone includes the following raw materials by weight:
[0062]
[0063] The flux is K 2 CO 3 , The clarifying agent is Sb 2 O 3 .
Example Embodiment
[0064] Example 3
[0065] The difference between Example 3 and Example 1 is that the artificial color-changing gemstone includes the following raw materials by weight:
[0066]
[0067] The flux is composed of B 2 O 3 , K 2 CO 3 And Na 2 CO 3 It is mixed according to the weight ratio of 1:1:1, and the clarifying agent is Sb 2 O 3 .
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Property
Measurement
Unit
Strain point
aaaaa
aaaaa
Login to view more
Abstract
The invention belongs to the technical field of artificial gems, and particularly relates to an artificial phenomenal gem and a preparation method thereof. The artificial phenomenal gem comprises SiO2, K2O, Nd2O3, CaCO3, Pr6O11, Na2O, ZnO, As2O3, a fluxing agent and a clarifying agent. The preparation method comprises the following steps: (1) mixing various raw materials proportionally, and stirring uniformly to obtain a mixture A; (2) heating the mixture A to the temperature of 1350-1500 DEG C, and maintaining for 20 hours till the mixture A is melted completely to obtain a melt B; (3) cooling the melt B to the temperature of 1200-1250 DEG C, maintaining for 4 hours and then pouring the melt B into a mold to obtain a formed gem C; and (4) annealing the formed gem C. The artificial phenomenal gem can produce broad color and hue, and has bright green purple color-changing effect under different light rays; by the preparation method, the discharge rate can be increased obviously; and thepreparation method is environmentally friendly.
Description
technical field [0001] The invention belongs to the technical field of artificial gemstones, and in particular relates to artificial color-changing gemstones and a preparation method thereof. Background technique [0002] Alexandrite (ALEXANDRITE), also known as chrysoberyl, is one of the five precious gemstones and belongs to the color-changing variety of chrysoberyl. In daylight or daylight-type light, its color is usually gray-green, yellowish-green to blue-green; but in incandescent light, it usually appears maroon or purple-red. Commonly known as "emerald by day, ruby by night". The factors that affect the price of alexandrite are mainly the color-changing effect, size, transparency and number of flaws of alexandrite. Generally speaking, the more obvious the discoloration effect is, such as emerald green during the day and bright red at night, the higher the price. But under normal circumstances, there are very few gemstones with such an obvious color-changing effe...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more