阅读说明：本技术 一种具有高机械强度的玻璃及制造方法 (Glass with high mechanical strength and manufacturing method thereof ) 是由 汪贵华 易家良 曹发忠 潘守芹 于 2020-07-20 设计创作，主要内容包括：本发明提供具有高机械强度的玻璃,更具体来说是制造体电导微通道板实体边部所用玻璃材料的化学组成,以及该玻璃的制造方法。此法用来改善体电导微通道板的机械强度,特别是孔径小、厚度薄的产品的强度。所发明的玻璃能够和半导体性质的钒磷酸盐玻璃在热压下很好熔合。(The present invention provides glass having high mechanical strength, and more particularly, the chemical composition of the glass material used to make the solid edges of bulk-conducting microchannel plates, and methods for making the glass. The method is used for improving the mechanical strength of the bulk-conduction microchannel plate, particularly the strength of products with small aperture and thin thickness. The glass of the invention can be well fused with vanadium phosphate glass of semiconductor nature under hot pressing.)

1. A glass having high mechanical strength, characterized in that: comprises the following components: PbO, SiO₂、B₂O₃And Bi₂O₃。

2. Glass with high mechanical strength according to claim 1, characterized in that: the (PbO + Bi)₂O₃) Is 35 to 60 mol%, and the (SiO)₂+B₂O₃) In a molar ratio of 40 to 65 mol%, wherein Bi₂O₃Is not more than 10 mol%, said B₂O₃Is not more than 15 mol%.

3. Glass having high mechanical strength according to claim 2, characterized in that: further comprises Sb₂O₃。

4. Glass having high mechanical strength according to claim 3, characterized in that: the Sb₂O₃The mol percentage is 0-2 mol%.

5. The glass having high mechanical strength according to any one of claims 1 to 4, wherein: the glass has a coefficient of thermal expansion in the range of 80-90X 10^-7(℃)。

6. A method for manufacturing high mechanical strength glass, characterized in that: the method comprises the following steps:

step one, preparing a glass batch;

step two, heating and melting the glass batch of the step one to obtain glass liquid with uniform performance;

step three, pouring the molten glass in the step two into a glass rod with a hexagonal section;

and step four, drawing the glass rods in the step three into filaments, arranging the filaments around the hot-pressing prefabricated rod of the microchannel plate, and performing hot-pressing molding to obtain the microchannel plate with solid edges.

7. The method for producing glass having high mechanical strength according to claim 6, wherein: the glass batch in the step one is PbO, SiO₂、B₂O₃And Bi₂O₃Said (PbO + Bi)₂O₃) Is 35 to 60 mol%, and the (SiO)₂+B₂O₃) In a molar ratio of 40 to 65 mol%, wherein Bi₂O₃Is not more than 10 mol%, said B₂O₃Is not more than 15 mol%.

8. The method for producing glass having high mechanical strength according to claim, wherein: the glass batch in the step one is PbO, SiO₂、B₂O₃、Bi₂O₃And Sb₂O₃Said (PbO + Bi)₂O₃) Is 35 to 60 mol%, and the (SiO)₂+B₂O₃) In a molar ratio of 40 to 65 mol%, wherein Bi₂O₃Is not more than 10 mol%, said B₂O₃Is not more than 15 mol%, the Sb₂O₃The mol percentage is 0-2 mol%.

9. Glass having high mechanical strength according to any one of claims 6 to 8, wherein: the glass has a coefficient of thermal expansion in the range of 80-90X 10^-7(℃)。

Technical Field

The invention relates to the field of glass materials, in particular to glass with high mechanical strength and a manufacturing method thereof.

Background

The common microchannel plate is made of non-conductive glass material, and hydrogen is introduced into the product through heating so that the surface of the product performs chemical reduction reaction to form a surface conductive layer, thereby enabling the microchannel plate to have the function of amplifying electronic signals. Due to the high chemical activity of the conductive layer, the conductive layer tends to age during operation and release cations such as hydrogen in the microchannels, which can cause disturbing noise. The bulk-conduction microchannel plate is made of semiconductor glass, has electric conductivity, does not need heating hydrogen reduction treatment, and can avoid the defects of the common microchannel plate. However, the semiconductor material used to make bulk-conductance microchannel plates is a vanadium phosphate glass, which is much lower in mechanical strength than ordinary silicate glasses.

Moreover, the glass adopted by the common microchannel plate contains alkali metal oxide components, so that alkali metal ions enter the microchannel to cause interference when the microchannel plate works.

Disclosure of Invention

The present invention overcomes the disadvantages of the prior art, and it is an object of the present invention to provide a glass having high mechanical strength, and a method for producing a glass having high mechanical strength.

The purpose of the invention is realized by the following technical scheme.

A glass with high mechanical strength comprises the following components: PbO, SiO₂、B₂O₃And Bi₂O₃。

Preferably, the (PbO + Bi)₂O₃) Is 35 to 60 mol%, and the (SiO)₂+B₂O₃) In a molar ratio of 40 to 65 mol%, wherein Bi₂O₃Is not more than 10 mol%, said B₂O₃Is not more than 15 mol%.

Preferably, the glass has a coefficient of thermal expansion in the range of 80-90X 10^-7(℃)。

A glass with high mechanical strength comprises the following components: PbO, SiO₂、B₂O₃And Bi₂O₃And also comprises Sb₂O₃。

Preferably, the Sb is₂O₃The mol percentage is 0-2 mol%.

Preferably, the glass has a coefficient of thermal expansion in the range of 80-90X 10^-7(℃)。

A method for producing glass having high mechanical strength, comprising the steps of:

Step one, preparing a glass batch;

step two, heating and melting the glass batch of the step one to obtain glass liquid with uniform performance;

step three, pouring the molten glass in the step two into a glass rod with a hexagonal section;

and step four, drawing the glass rods in the step three into filaments, arranging the filaments around the hot-pressing prefabricated rod of the microchannel plate, and performing hot-pressing molding to obtain the microchannel plate with solid edges.

Preferably, the glass batch in the first step is PbO, SiO₂、B₂O₃And Bi₂O₃Said (PbO + Bi)₂O₃) Is 35 to 60 mol%, and the (SiO)₂+B₂O₃) In a molar ratio of 40 to 65 mol%, wherein Bi₂O₃Is not more than 10 mol%, said B₂O₃Is not more than 15 mol%.

Preferably, the glass batch in the first step is PbO, SiO₂、B₂O₃、Bi₂O₃And Sb₂O₃Said (PbO + Bi)₂O₃) Is 35 to 60 mol%, and the (SiO)₂+B₂O₃) In a molar ratio of 40 to 65 mol%, wherein Bi₂O₃Is not more than 10 mol%, said B₂O₃Is not more than 15 mol%, the Sb₂O₃The mol percentage is 0-2 mol%.

Preferably, in any of the above embodiments, the glass has a coefficient of thermal expansion in the range of 80 to 90X 10 ^-7(℃)。

The invention has the beneficial effects that:

the invention uses a silicate glass containing PbO to manufacture the edge solid glass beads of the microchannel plate product. Silicate glass has significantly higher strength than phosphate glass constituting the bulk conductance microchannel plate; this is because the continuity and symmetry of the-Si-O-skeleton in silicate glass are superior to the-P-O-skeleton in phosphate glass, and it can bear load uniformly and has higher ultimate elastic strain rate. Because the-Si-O-skeleton in the silicate glass is difficult to be directly and firmly combined with the-P-O-skeleton of the semiconductor glass, the invention utilizes the characteristic that the PbO component can well connect the-Si-O-skeleton and the-P-O-skeleton at the same time, and adopts the silicate glass containing obvious PbO component as the edge glass of the product.

In the glass composition, the proper amount of B is used₂O₃Substitute for SiO₂The continuity and symmetry of the-Si-O-skeleton can be improved, and the mechanical strength of the glass can be improved. In addition, an appropriate amount of Bi is used₂O₃Replacing PbO, the glass forming range can be expanded and the glass crystallization tendency can be reduced.

A small amount of Sb is added into the chemical composition of the glass₂O₃As a fining agent in glass melting, the uniformity and quality of the glass obtained by melting can be improved.

The lead silicate glass used as the edge solid material of the bulk-conduction microchannel plate does not contain alkali metal oxide.

The thermal expansion coefficient of the peripheral solid glass is controlled to be 80-90 multiplied by 10^-7In deg.C, it fuses well with the bulk conductive semiconductor glass that forms the body of the microchannel plate.

Drawings

FIG. 1 is a solid glass outer ring of a bulk-conductance microchannel plate.

In the figure: 1. a glass reinforcing ring.

Detailed Description

The technical solution of the present invention is further illustrated by the following specific examples.

Chemical composition of glass

1. A glass with high mechanical strength comprises the following components: PbO and SiO₂The mol percent of PbO is 38-55mol percent, and the SiO is₂Is 45-62 mol%.

2. A glass with high mechanical strength comprises the following components: PbO, SiO₂And B₂O₃The mol percent of PbO is 35-55mol percent, and the (SiO)₂+B₂O₃) In a molar percentage of 45 to 65 mol%, wherein B₂O₃Is not more than 15 mol%.

3. A glass with high mechanical strength comprises the following components: PbO, SiO₂、B₂O₃And Bi₂O₃Said (PbO + Bi)₂O₃) Is 35 to 60 mol%, and the (SiO)₂+B₂O₃) Is 40-65 mol%, wherein, the Bi is ₂O₃Is not more than 10 mol%, said B₂O₃Is not more than 15 mol%.

4. A glass with high mechanical strength comprises the following components: PbO, SiO₂、B₂O₃、Bi₂O₃And Sb₂O₃Said (PbO + Bi)₂O₃) Is 35 to 60 mol%, and the (SiO)₂+B₂O₃) Is 40-65 mol%, the Sb₂O₃The mol percent is 0-2mol percent, wherein, Bi₂O₃Is not more than 10 mol%, said B₂O₃Is not more than 15 mol%.