阅读说明：本技术 一种高性能的硼钡锂玻料及其制备方法 (High-performance boron barium lithium glass material and preparation method thereof ) 是由 朱同武 朱嘉伟 朱立芳 朱志方 于 2020-12-30 设计创作，主要内容包括：本发明公开了一种高性能的硼钡锂玻料及其制备方法,涉及陶瓷结合剂技术领域,其原料按重量份包括：SiO-2 37-45份、Al-2O-3 7-12份、B-2O-3 10-15份、BaO 1-4份、Li-2O 2-4份、Na-2CO-3 3-7份、V-2O-5 1-3份、CaO 1-4份、Bi-2O-3 0.5-2份、CeO-2 0-4份、La-2O-3 0-4份、Na-3AlF-6 3-6份、预合金粉3-7份；其制备方法包括以下步骤：将SiO-2、Al-2O-3、B-2O-3、BaO、Li-2O、Na-2CO-3、V-2O-5、CaO、Bi-2O-3、CeO-2、La-2O-3、Na-3AlF-6、预合金粉加入到经预热后的熔炉中进行熔炼,得玻璃液；将玻璃液倾注到冷水中进行淬冷,得粗玻料；将粗玻料粉碎,球磨,过筛,干燥,即得。本发明制得的硼钡锂玻料具有优异的力学性能,抗折强度和抗冲击强度分别可达135.5MPa和4.25kJ/m～2,满足大多数生产需要。(The invention discloses a high-performance boron barium lithium glass material and a preparation method thereof, relating to the technical field of ceramic bonding agents, and the glass material comprises the following raw materials in parts by weight: SiO 2 2 37-45 parts of Al 2 O 3 7-12 parts of B 2 O 3 10-15 parts of BaO 1-4 parts of Li 2 O2-4 parts, Na 2 CO 3 3-7 parts of V 2 O 5 1-3 parts of CaO, 1-4 parts of Bi 2 O 3 0.5 to 2 portions of CeO 2 0 to 4 portions of La 2 O 3 0 to 4 portions of Na 3 AlF 6 3-6 parts of pre-alloyed powder and 3-7 parts of pre-alloyed powder; the preparation method comprises the following steps: mixing SiO 2 、Al 2 O 3 、B 2 O 3 、BaO、Li 2 O、Na 2 CO 3 、V 2 O 5 、CaO、Bi 2 O 3 、CeO 2 、La 2 O 3 、Na 3 AlF 6 Adding the pre-alloyed powder into a preheated smelting furnace for smelting to obtain molten glass; pouring molten glass intoQuenching in cold water to obtain a coarse glass material; and (4) crushing the coarse glass material, ball-milling, sieving and drying to obtain the glass material. The boron-barium-lithium glass material prepared by the invention has excellent mechanical properties, and the rupture strength and the impact strength can respectively reach 135.5MPa and 4.25kJ/m 2 And most production requirements are met.)

1. The high-performance boron barium lithium glass material is characterized by comprisingThe raw materials comprise the following components in parts by weight: SiO 2₂37-45 parts of Al₂O₃7-12 parts of B₂O₃10-15 parts of BaO 1-4 parts of Li₂O2-4 parts, Na₂CO₃3-7 parts of V₂O₅1-3 parts of CaO, 1-4 parts of Bi₂O₃0.5 to 2 portions of CeO₂0 to 4 portions of La₂O₃0 to 4 portions of Na₃AlF₆3-6 parts of pre-alloyed powder and 3-7 parts of pre-alloyed powder.

2. The high-performance boron barium lithium glass frit according to claim 1, wherein the pre-alloyed powder consists of elemental metal Ni powder, Ti powder, Bi powder, Mg powder and Fe powder.

3. The high-performance boron barium lithium glass material according to claim 2, wherein the pre-alloyed powder comprises the following raw materials in percentage by weight: 17-23% of Ni, 10-15% of Ti, 17-23% of Bi, 7-12% of Mg and the balance of Fe.

4. The high performance boron barium lithium frit of any one of claims 1 to 3, wherein the 9% ≦ Li₂O/(B₂O₃+Al₂O₃)≤15％。

5. The high-performance boron barium lithium glass frit according to any one of claims 1 to 4, wherein CeO is contained in the raw material₂And La₂O₃The sum of the parts by weight of the components is more than or equal to 2 parts.

6. The preparation method of the high-performance boron barium lithium glass material based on any one of claims 1 to 5 is characterized by comprising the following steps of:

s1, mixing SiO₂、Al₂O₃、B₂O₃、BaO、Li₂O、Na₂CO₃、V₂O₅、CaO、Bi₂O₃、CeO₂、La₂O₃、Na₃AlF₆Adding pre-alloyed powder into the preheated alloySmelting in a later smelting furnace to obtain molten glass;

s2, pouring the molten glass into cold water for quenching to obtain a coarse glass material;

and S3, crushing the coarse glass material, ball-milling, sieving and drying to obtain the glass material.

7. The method for preparing the high-performance boron barium lithium glass material as claimed in claim 6, wherein the melting temperature is 1450-1500 ℃, and the temperature is kept for 60-90 min.

Technical Field

The invention relates to the technical field of ceramic binders, in particular to a high-performance boron barium lithium glass material and a preparation method thereof.

Background

The ceramic bond is a substance made of low-melting-point vitrified materials, has good chemical stability, small elastic deformation and wide allowable change range of hardness, and is widely applied to the manufacture of common abrasive tools as a die bond. The main components of the ceramic bond are glass material (silica, boric acid, zinc oxide, barium oxide, spodumene, etc.), clay, colorant, binder, etc., and the ceramic bond is mixed with diamond abrasive, formed, sintered at high temperature, and firmly combined with a substrate to obtain the diamond grinding tool. The ceramic bond in the prior art has high brittleness and poor impact resistance, thereby limiting the wide application of the ceramic bond in certain application occasions. The glass material component in the ceramic bond has decisive influence on the performance of the ceramic bond, such as sintering temperature, expansion performance, infiltration performance of diamond, shock resistance and the like.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a high-performance boron barium lithium glass material and a preparation method thereof, and the prepared boron barium lithium glass material has excellent mechanical properties, good rupture strength and good impact strength and can meet most production requirements.

The invention provides a high-performance boron barium lithium glass material which comprises the following raw materials in parts by weight: SiO 2₂37-45 parts of Al₂O₃7-12 parts of B₂O₃10-15 parts of BaO 1-4 parts of Li₂O2-4 parts, Na₂CO₃3-7 parts of V₂O₅1-3 parts of CaO, 1-4 parts of Bi₂O₃0.5 to 2 portions of CeO₂0 to 4 portions of La₂O₃0 to 4 portions of Na₃AlF₆3-6 parts of pre-alloyed powder and 3-7 parts of pre-alloyed powder.

Preferably, the pre-alloy powder consists of metallic simple substance Ni powder, Ti powder, Bi powder, Mg powder and Fe powder.

Preferably, the pre-alloyed powder comprises the following raw materials in percentage by weight: 17-23% of Ni, 10-15% of Ti, 17-23% of Bi, 7-12% of Mg and the balance of Fe.

Preferably, the 9% ≦ Li₂O/(B₂O₃+Al₂O₃)≤15％。

Preferably, in the raw material, CeO₂And La₂O₃The sum of the parts by weight of the components is more than or equal to 2 parts.

The invention also provides a preparation method of the high-performance boron barium lithium glass material, which comprises the following steps:

s1, mixing SiO₂、Al₂O₃、B₂O₃、BaO、Li₂O、Na₂CO₃、V₂O₅、CaO、Bi₂O₃、CeO₂、La₂O₃、Na₃AlF₆Adding the pre-alloyed powder into a preheated smelting furnace for smelting to obtain molten glass;

s2, pouring the molten glass into cold water for quenching to obtain a coarse glass material;

and S3, crushing the coarse glass material, ball-milling, sieving and drying to obtain the glass material.

Preferably, the smelting temperature is 1450-1500 ℃, and the temperature is kept for 60-90 min.

Has the advantages that: the pre-alloyed powder is added into the glass material, the metal phase and the ceramic phase are fused and connected in a staggered manner to form an alloy-ceramic connecting phase as a framework, and the components of the pre-alloyed powder are limited, so that the mechanical properties of the material, such as breaking strength, impact strength and the like, are improved, and in addition, the addition of the pre-alloyed powder can also refine a crystal phase and further improve the strength of the glass material; by limiting Li in the frit₂O/(B₂O₃+Al₂O₃) And adding and limiting CeO₂And La₂O₃The dosage of the components reduces the sintering temperature, refines crystal grains and plays a role in strengthening and toughening; the boron-barium-lithium glass material prepared by the invention has excellent mechanical properties, and the rupture strength and the impact strength can respectively reach 135.5MPa and 4.25kJ/m²And most production requirements are met.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to specific examples.

Example 1

The invention provides a high-performance boron barium lithium glass material which comprises the following raw materials in parts by weight: SiO 2₂37 parts of Al₂O₃12 parts of B₂O₃10 parts of BaO 2 parts of Li₂O2 parts, Na₂CO₃3 parts of, V₂O₅1 part, CaO 4 parts and Bi₂O₃0.5 part of CeO₂2 parts of Na₃AlF₆3 parts of pre-alloyed powder and 7 parts of pre-alloyed powder; the pre-alloyed powder consists of metal simple substance Ni powder, Ti powder, Bi powder, Mg powder and Fe powder, and the weight percentages of the raw materials are as follows: 23% of Ni, 10% of Ti, 17% of Bi, 12% of Mg and the balance of Fe.

The preparation method comprises the following steps:

s1, mixing SiO₂、Al₂O₃、B₂O₃、BaO、Li₂O、Na₂CO₃、V₂O₅、CaO、Bi₂O₃、CeO₂、La₂O₃、Na₃AlF₆Adding the pre-alloyed powder into a preheated smelting furnace for smelting to obtain molten glass, wherein the smelting temperature is 1450 ℃, and the temperature is kept for 90 min;

s2, pouring the molten glass into cold water for quenching to obtain a coarse glass material;

and S3, crushing the coarse glass material, ball-milling, sieving and drying to obtain the glass material.

Example 2

The invention provides a high-performance boron barium lithium glass material which comprises the following raw materials in parts by weight: SiO 2₂40 parts of Al₂O₃10 parts of B₂O₃10 parts of BaO 1 parts of Li₂O2 parts, Na₂CO₃5 parts of V₂O₅2 parts of CaO, 3 parts of Bi₂O₃1 part of CeO₂1 part of La₂O₃1 part of Na₃AlF₆4 parts of pre-alloyed powder and 5 parts of pre-alloyed powder; wherein the pre-alloyed powder is prepared from metallic simple substance Ni powder, Ti powder, Bi powder, Mg powder and FeThe powder comprises the following raw materials in percentage by weight: 20% of Ni, 12% of Ti, 20% of Bi, 7% of Mg and the balance of Fe.

The preparation method comprises the following steps:

s1, mixing SiO₂、Al₂O₃、B₂O₃、BaO、Li₂O、Na₂CO₃、V₂O₅、CaO、Bi₂O₃、CeO₂、La₂O₃、Na₃AlF₆Adding the pre-alloyed powder into a preheated smelting furnace for smelting to obtain molten glass, wherein the smelting temperature is 1470 ℃, and the temperature is kept for 75 min;

s2, pouring the molten glass into cold water for quenching to obtain a coarse glass material;

and S3, crushing the coarse glass material, ball-milling, sieving and drying to obtain the glass material.

Example 3

The invention provides a high-performance boron barium lithium glass material which comprises the following raw materials in parts by weight: SiO 2₂42 parts of Al₂O₃12 parts of B₂O₃15 portions of BaO 3 portions and Li₂O4 parts, Na₂CO₃7 parts of V₂O₅2 parts of CaO, 1 part of Bi₂O₃1 part of La₂O₃3 parts of Na₃AlF₆5 parts of pre-alloyed powder and 4 parts of pre-alloyed powder; the pre-alloyed powder consists of metal simple substance Ni powder, Ti powder, Bi powder, Mg powder and Fe powder, and the weight percentages of the raw materials are as follows: 22% of Ni, 13% of Ti, 18% of Bi, 8% of Mg and the balance of Fe.

The preparation method comprises the following steps:

s1, mixing SiO₂、Al₂O₃、B₂O₃、BaO、Li₂O、Na₂CO₃、V₂O₅、CaO、Bi₂O₃、CeO₂、La₂O₃、Na₃AlF₆Adding the pre-alloyed powder into a preheated smelting furnace for smelting to obtain molten glass, wherein the smelting temperature is 1480 ℃, and the temperature is kept for 75 min;

s2, pouring the molten glass into cold water for quenching to obtain a coarse glass material;

and S3, crushing the coarse glass material, ball-milling, sieving and drying to obtain the glass material.

Example 4

The invention provides a high-performance boron barium lithium glass material which comprises the following raw materials in parts by weight: SiO 2₂45 parts of Al₂O₃7 parts of B₂O₃15 portions of BaO 4 portions and Li₂O3 parts, Na₂CO₃5 parts of V₂O₅3 portions of CaO, 3 portions of Bi₂O₃2 parts of CeO₂3 parts of La₂O₃1 part of Na₃AlF₆6 parts of pre-alloyed powder and 3 parts of pre-alloyed powder; the pre-alloyed powder consists of metal simple substance Ni powder, Ti powder, Bi powder, Mg powder and Fe powder, and the weight percentages of the raw materials are as follows: 17% of Ni, 15% of Ti, 23% of Bi, 10% of Mg and the balance of Fe.

The preparation method comprises the following steps:

s1, mixing SiO₂、Al₂O₃、B₂O₃、BaO、Li₂O、Na₂CO₃、V₂O₅、CaO、Bi₂O₃、CeO₂、La₂O₃、Na₃AlF₆Adding the pre-alloyed powder into a preheated smelting furnace for smelting to obtain molten glass, wherein the smelting temperature is 1500 ℃, and the temperature is kept for 60 min;

s2, pouring the molten glass into cold water for quenching to obtain a coarse glass material;

and S3, crushing the coarse glass material, ball-milling, sieving and drying to obtain the glass material.

The glass frits prepared in examples 1 to 4 of the present invention were hot-pressed and sintered to prepare samples of 50mm × 8mm × 8mm at a sintering temperature of 800 ℃, and then their properties were measured, and the results are shown in table 1.

Table 1 mechanical property data of boron barium lithium glass materials prepared in examples 1-4

	Example 1	Example 2	Example 3	Example 4
					Flexural strength MPa	135.5	137.8	141.2	136.9
Impact strength kJ/m2	4.41	4.38	4.29	4.25

As can be seen from table 1, the frits prepared in examples 1-4 of the present invention have good mechanical properties.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.