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Translucent ceramic sintered body and its manufacturing method

一种透光性、烧结体的技术，应用在陶瓷制品、其他家里用具、家里用具等方向，能够解决难以提高隔着透光性构件辨识性等问题，达到提高透明性及辨识性的效果

Active Publication Date: 2022-03-18
AGC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, an inexpensive normal-pressure sintered body has a problem that even if the transmittance can be increased to the extent that it contains bubbles, it is difficult to improve the visibility through the translucent member.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0094] First, prepare Al with an average particle size of 1.0 μm 2 o 3 powder, AlN powder, Y 2 o 3 Powder, Li 2 CO 3 powder and MgO powder. In terms of molar ratio as Al 2 o 3 : AlN = 70: 30 way to weigh 150g of Al 2 o 3 powder and AlN powder, and thus relative to Al 2 o 3 The total amount of powder and AlN powder (150g), weighing 0.09% by mass of Y 2 o 3 Powder, 0.07% by mass Li 2 CO 3 powder, 0.15% by mass MgO powder. Furthermore, 1.5 g (corresponding to 45 to 55 ppm in terms of carbon residue after calcination) was weighed as a carbon source of a polycarboxylic acid-based polymer (manufactured by Chukyo Oil & Fat Co., Ltd., trade name: Serna D-305), and the obtained The above-mentioned raw materials were put into a tank made of polyurethane. Using high-purity alumina balls with a diameter of 5 mm, 440 ml of absolute ethanol was used as a medium, and after mixing and pulverizing with a rotary ball mill (manufactured by Aichi Electric Co., Ltd., trade name: AN...

example 2～7

[0099] In the manufacturing process of the ceramic sintered body of Example 1, Li 2 CO 3 Except having changed the compounding quantity of powder into the composition shown in Table 1, it carried out similarly to Example 1, and produced the ceramic sintered body. The amount of each component (including the amount of impurities), the number of bubbles, each characteristic value, etc. of each ceramic sintered body were measured in the same manner as in Example 1. These results are shown in Table 1.

[0100] [Table 1]

[0101] Table 1

[0102] example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 al 2 o 3 [mol%]

[0103] As shown in Table 1, in the AlON sintered bodies of Examples 1 to 3, the number of cells with a pore diameter of 1 μm or more and less than 5 μm is small, and the number of microbubble aggregates is also small, so the transmittance and clarity are high. By using such an AlON sintered body as a transparent membe...

example 8～11

[0105] In the manufacturing process of the ceramic sintered body of Example 1, Al 2 o 3 Except having changed the content ratio with AlN as shown in Table 2, it carried out similarly to Example 1, and produced the ceramic sintered compact. The amount of each component (including the amount of impurities), the number of bubbles, each characteristic value, etc. of each ceramic sintered body were measured in the same manner as in Example 1. These results are shown in Table 2.

[0106] [Table 2]

[0107] Table 2

[0108] Example 8 Example 9 Example 10 Example 11 Al 2 o 3 [mol%]

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Abstract

The invention relates to a light-transmitting ceramic sintered body, which is 10 pieces / mm 3 More than 4000pcs / mm 3 The following range includes cells having a pore diameter of 1 μm to less than 5 μm, and the closed cell ratio is 0.01 vol % to 1.05 vol %. In this light-transmitting ceramic sintered body, the average transmittance of a test piece with a thickness of 1.90 mm in the visible spectrum at a wavelength of 500 to 900 nm is 70% or more, and the test piece with a thickness of 1.90 mm has an optical comb of 0.5 mm. The sharpness at width is above 60%.

Description

technical field [0001] The present invention relates to a translucent ceramic sintered body and its manufacturing method. Background technique [0002] As a light-transmitting ceramic sintered body, for example, an oxide of aluminum (alumina / Al 2 o 3 ) sintered body, aluminum oxynitride (Al 2+x o 3 N x : AlON) sintered body, etc. In particular, since the crystal structure of aluminum oxynitride is a cubic crystal, it is expected that a sintered body theoretically excellent in translucency can be obtained from aluminum oxide. In light-transmitting members used in severe environments, and in light-transmitting members requiring durability against scratches, etc., sapphire members having a single crystal structure have been used in the past, but since single crystal sapphire is expensive, it is being studied for use Translucent ceramic sintered body instead of single crystal sapphire. The light-transmitting ceramic sintered body is studied for use, for example, as a wind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/00
CPCC04B2235/9653C04B35/117C04B2235/3865C04B2235/3225C04B2235/3203C04B2235/3206C04B2235/3208C04B2235/3201C04B2235/3418C04B2235/3227C04B2235/3293C04B2235/721C04B2235/724C04B2235/5445C04B2235/5436C04B2235/6562C04B2235/6565C04B2235/662C04B2235/6581C04B2235/6586C04B2235/77C04B2235/762C04B2235/78C04B2235/786C04B2235/96C04B2235/3869C04B38/068C04B38/0054C04B38/0061C04B38/007C04B2235/3217
Inventor 小川修平宫川直通篠崎泰夫吉野晴彦远山一成大越雄斗
Owner AGC INC
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