WO2021057512A1 - 一种用于陶瓷电热体的复合型材料 - Google Patents
一种用于陶瓷电热体的复合型材料 Download PDFInfo
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- WO2021057512A1 WO2021057512A1 PCT/CN2020/114756 CN2020114756W WO2021057512A1 WO 2021057512 A1 WO2021057512 A1 WO 2021057512A1 CN 2020114756 W CN2020114756 W CN 2020114756W WO 2021057512 A1 WO2021057512 A1 WO 2021057512A1
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- molybdenum disilicide
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- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
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- H05B3/00—Ohmic-resistance heating
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- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
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Definitions
- the invention relates to a composite material, in particular to a composite material that can be used for ceramic electric heating bodies.
- the ceramic electric heating body can be used as the electric heating body of the ignition mechanism.
- the extremely high temperature reached by the ceramic at the moment of electrification can be used for ignition or heating. It can be used in engine ignition, gas stove ignition, water heater ignition, infrared radiation source, oxygen sensor heating, soldering iron tip heating, etc.
- the electric heating body of ceramic material has the advantages of fast start-up, high temperature resistance, corrosion resistance, high strength and long life.
- Chinese patent CN100484337C discloses a multilayer circular ceramic heater and its preparation process, and specifically discloses that the resistance layer, insulating layer and conductive layer of the ceramic heater include Si 3 N 4 , Al 2 O 3 , Y 2 O 3 and MoSi 2 four components; Si 3 N 4 functions to form a network structure, Al 2 O 3 and Y 2 O 3 function to adjust the network structure, and MoSi 2 functions to form a conductive heating material.
- the ceramic electric heating body prepared by the above-mentioned components has a fast reaction speed, a high temperature, a time period for reaching a desired temperature, a long service life, a high yield of the manufacturing process, and a low manufacturing cost.
- the composite materials prepared by the preparation materials in the above patents still have the following problems in some applications: high temperature coefficient of resistance and large inrush current directly lead to an increase in the cost of the power supply. Due to the rapid change of current/resistance, the use of The algorithm is complicated in power control.
- the purpose of the present invention is to provide a composite material with a small impulse current, and at the same time reduce the application cost of a ceramic electric heating body prepared by using the material.
- the present invention is achieved as follows: a composite material for ceramic electric heating bodies, characterized in that: the preparation components of the composite material include silicon nitride, molybdenum disilicide, silicon carbide, yttrium oxide, oxide Aluminum and lanthanum oxide.
- the preparation components of the composite material include silicon nitride, molybdenum disilicide, silicon carbide, yttrium oxide, oxide Aluminum and lanthanum oxide.
- silicon nitride, molybdenum disilicide and silicon carbide are the main functional materials, and aluminum oxide, yttrium oxide and lanthanum oxide are auxiliary materials.
- the composite material prepared by using the above-mentioned material parts is suitable as the heating layer of the ceramic electric heating body.
- the composite material prepared by using the above-mentioned material parts is suitable as the insulating layer of the ceramic electric heating body.
- the composite material prepared by using the above-mentioned material parts is suitable as the conductive layer of the ceramic electric heating body.
- the main functional material further includes tungsten carbide.
- the auxiliary material further includes ytterbium oxide.
- a ceramic electric heating body is prepared by using the above-mentioned composite material.
- the impulse current is small when the temperature coefficient of resistance TCR is large, and the impulse current is small when the temperature coefficient of resistance TCR is small.
- the cost of the supporting power supply and control components can be greatly reduced. It effectively solves the problems of high cost and difficult control of the original ceramic structural material body in the actual application of supporting control electronic components, and reaches the similar performance index of the international ceramic material structural body.
- the use of the material of the present invention can use a 60W power supply, which reduces the requirement for power supply capacity.
- silicon nitride, molybdenum disilicide and silicon carbide are the main functional materials, providing high-temperature performance, heating performance, electrical conductivity, etc. after the composite material is prepared into a ceramic heater.
- Alumina, yttrium oxide and lanthanum oxide are auxiliary materials, which mainly help composite materials to help ceramic sintering, improve room temperature, high temperature strength, and high temperature oxidation resistance when preparing ceramic electric heating bodies.
- the composite material in this embodiment can be used to prepare ceramic electric heating bodies.
- the ceramic electric heating bodies in this embodiment are mostly ceramic electric heating bodies, including but not limited to heating layers, insulating layers, and conductive layers.
- the main functional material further includes tungsten carbide (WC).
- the auxiliary material further includes ytterbium oxide (Yb2O3).
- a ceramic electric heating body is prepared by using the above-mentioned composite material.
- the ceramic electric heating body in this embodiment has a multilayer structure from the inside and the outside, with at least two or more layers.
- the inner layer structure is a resistive layer
- the outer layer structure is a conductive layer.
- the inner layer structure is a resistance layer
- the middle layer structure is an insulating layer
- the outer layer structure is a conductive layer.
- the multilayer ceramic electric heating body in this embodiment is manufactured by grouting to prevent manufacturing, and includes the following steps:
- Step 1 Prepare mixed slurry: silicon nitride, silicon carbide, molybdenum disilicide, yttrium oxide, lanthanum oxide, and aluminum oxide powder, add water according to the weight ratio, mix and stir evenly, and put it into a container.
- different mixed slurries are prepared and equipped in different containers for standby.
- Step 2 Grouting: Put the grouting molds with open ends on the grouting machine, and then pour the mixed ceramic slurry into the grouting machine to start grouting. According to the number of layers of the ceramic electric heating body, grouting is carried out in stages, and then the grouting is carried out sequentially from the outer layer to the inner layer.
- Step 3 Sintering: Take out the copper grouting mold of the ceramic green body that has been dried and lose water, put it into the sintering mold, and finally put the sintering mold containing the green ceramic body into the sintering furnace for sintering at a temperature of 1400°C and a pressure Sintering at 2000-5000Kpa for 7-12 hours.
- Step 4 Take the sintered ceramic material body out of the sintering mold, perform external trimming, and perform electrode assembly.
- the impulse current is small when the temperature coefficient of resistance TCR is large, and the impulse current is small when the temperature coefficient of resistance TCR is small.
- the cost of the supporting power supply and control components can be greatly reduced. It effectively solves the problems of high cost and difficult control of the original ceramic structural material body in the actual application of supporting control electronic components, and reaches the similar performance index of the international ceramic material structural body.
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- Materials Engineering (AREA)
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- Mechanical Engineering (AREA)
- Resistance Heating (AREA)
- Ceramic Products (AREA)
Abstract
Description
Claims (9)
- 一种用于陶瓷电热体的复合型材料,其特征在于:复合型材料的制备成分包括氮化硅、二硅化钼、碳化硅、氧化钇、氧化铝和氧化镧。
- 如权利要求1所述的复合型材料,其特征在于:所述复合型材料的成分按以下比例制备:氮化硅:碳化硅:二硅化钼:氧化钇:氧化镧:氧化铝=(200-900):(50-900):(500-2800):(40-100):(10-90):(5-80)。
- 如权利要求2所述的复合型材料,其特征在于:按以下材料份数制备而成:氮化硅:碳化硅:二硅化钼:氧化钇:氧化镧:氧化铝=(300-800):(400-900):(800-2800):(40-100):(30-90):(5-80)。
- 如权利要求2所述的复合型材料,其特征在于:按以下材料份数制备而成:氮化硅:碳化硅:二硅化钼:氧化钇:氧化镧:氧化铝=(400-900):(50-200):(500-800):(40-90):(30-80):(5-60)。
- 如权利要求2所述的复合型材料,其特征在于:按以下材料份数制备而成:氮化硅:碳化硅:二硅化钼:氧化钇:氧化镧:氧化铝=(200-700):(100-700):(600-1500):(40-80):(10-70):(5-50)。
- 如权利要求1、2、3、4或5所述的复合型材料,其特征在于:所述主功能性材料还包括碳化钨。
- 如权利要求1、2、3、4或5所述的复合型材料,其特征在于:所述辅助性材料还包括氧化镱。
- 如权利要求6所述的复合型材料,其特征在于:所述辅助性材料还包括氧化镱。
- 一种陶瓷电热体,其特征在于:采用上述任一项权利要求所述复合型材料制造而成。
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/761,177 US20230354480A1 (en) | 2019-09-25 | 2020-09-11 | Composite material for ceramic electric heating element |
| EP20869722.7A EP4036072A4 (en) | 2019-09-25 | 2020-09-11 | COMPOSITE MATERIAL FOR A CERAMIC ELECTRIC RADIATOR |
| JP2022518167A JP7488890B2 (ja) | 2019-09-25 | 2020-09-11 | セラミック電気発熱体用複合材料 |
| MX2022003170A MX2022003170A (es) | 2019-09-25 | 2020-09-11 | Material compuesto para elemento de calefaccion electrica ceramica. |
| KR1020227011922A KR102719978B1 (ko) | 2019-09-25 | 2020-09-11 | 세라믹 전기발열체용 복합재료 |
| CA3154927A CA3154927C (en) | 2019-09-25 | 2020-09-11 | COMPOSITE-TYPE MATERIAL FOR CERAMIC ELECTRIC HEATING ELEMENTS |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910912107.6 | 2019-09-25 | ||
| CN201910912107.6A CN110590371A (zh) | 2019-09-25 | 2019-09-25 | 一种用于陶瓷电热体的复合型材料 |
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| Publication Number | Publication Date |
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| WO2021057512A1 true WO2021057512A1 (zh) | 2021-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/CN2020/114756 Ceased WO2021057512A1 (zh) | 2019-09-25 | 2020-09-11 | 一种用于陶瓷电热体的复合型材料 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20230354480A1 (zh) |
| EP (1) | EP4036072A4 (zh) |
| JP (1) | JP7488890B2 (zh) |
| KR (1) | KR102719978B1 (zh) |
| CN (1) | CN110590371A (zh) |
| CA (1) | CA3154927C (zh) |
| MX (1) | MX2022003170A (zh) |
| WO (1) | WO2021057512A1 (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024537281A (ja) * | 2022-03-30 | 2024-10-10 | チョンチン リ-マーク テクノロジー カンパニー リミテッド | オールセラミック発熱体 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590371A (zh) * | 2019-09-25 | 2019-12-20 | 重庆利迈陶瓷技术有限公司 | 一种用于陶瓷电热体的复合型材料 |
| CN116730724B (zh) * | 2023-05-05 | 2024-11-01 | 衡阳凯新特种材料科技有限公司 | 一种用于陶瓷探针的碳化硅复合陶瓷材料及其制备方法 |
| CN118026701A (zh) * | 2024-01-31 | 2024-05-14 | 浙江上硅聚力特材科技有限公司 | 一种氮化硅基陶瓷电发热体制备方法 |
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- 2020-09-11 WO PCT/CN2020/114756 patent/WO2021057512A1/zh not_active Ceased
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Also Published As
| Publication number | Publication date |
|---|---|
| CA3154927A1 (en) | 2021-04-01 |
| US20230354480A1 (en) | 2023-11-02 |
| KR102719978B1 (ko) | 2024-10-18 |
| JP7488890B2 (ja) | 2024-05-22 |
| CA3154927C (en) | 2025-04-08 |
| EP4036072A1 (en) | 2022-08-03 |
| CN110590371A (zh) | 2019-12-20 |
| JP2022550290A (ja) | 2022-12-01 |
| MX2022003170A (es) | 2022-05-25 |
| EP4036072A4 (en) | 2023-10-18 |
| KR20220061205A (ko) | 2022-05-12 |
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