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A rapid heating method that can be used to prepare ceramic materials

A technology of rapid heating and ceramic materials, applied in the direction of ohmic resistance heating, heating element materials, ohmic resistance heating parts, etc., can solve the problems of low temperature and difficult to realize the sintering process of ceramic materials, and achieve simple equipment structure, uniform heating, The effect of simple process operation

Active Publication Date: 2021-08-31
CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The photonic sintering process achieves lower temperatures, which are often difficult to achieve for ceramic materials

Method used

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  • A rapid heating method that can be used to prepare ceramic materials
  • A rapid heating method that can be used to prepare ceramic materials

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Embodiment Construction

[0018] Now in conjunction with the accompanying drawings, the content of the present invention and its specific implementation methods will be further described

[0019] Such as figure 1 As shown, the copper strips (2) and (3) are respectively connected to the power supply (1), and the two ends of the conductive materials (4) and (5) are connected to the copper strips (2) and (3), forming a complete circuit. When the power source (1) is discharged, the resulting current passes through the conductive material (4) and (5), thereby heating it. The conductive materials (4) and (5) have high electrical conductivity, and the temperature rises rapidly in a very short time. The ceramic material (8) located between the conductive materials (4) and (5) is heated by the radiation of the conductive materials (4) and (5), and the temperature rises rapidly to complete the sintering process.

[0020] A specific embodiment of the present invention adopts carbon paper or graphene as conduct...

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Abstract

The invention discloses a rapid heating method for preparing ceramic materials. A power source (1) discharges to generate a current, and the current passes through conductive materials (4) and (5) with high electrical conductivity in a circuit and performs resistance heating on them. Under the action of radiation heating, the temperature of the ceramic material (8) located in the cavity between the conductive materials (4) and (5) rises rapidly, and the sintering process is completed in a very short time. After the heating process ends, the temperature of the ceramic material (8) drops rapidly to complete the cooling process. This process method can realize ultra-fast heating and cooling process, the heating rate can reach 103-104°C / min, and the cooling rate can reach 104°C / min. The heating temperature reaches 3000°C, and the sintering process is completed within a few seconds. The process is simple in operation, simple in equipment structure and uniform in heating.

Description

technical field [0001] The invention belongs to the field of material preparation and processing, and in particular relates to a rapid heating process based on the Joule heating effect. Background technique [0002] Ceramic materials have excellent thermodynamic stability, mechanical stability and chemical stability, thus becoming a class of materials widely used. Traditional ceramic sintering processes typically require several hours of processing time. Due to the volatility of some elements, they are easily lost during the long-term sintering process, which makes it difficult to control the element composition of the prepared ceramic material, thereby affecting the performance of the ceramic material. For example, during the preparation of ceramic-based solid-state electrolytes, lithium and sodium elements are severely volatilized during the sintering process due to the long sintering time of the material, thereby reducing the performance of the electrolyte material. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/14H05B3/02
CPCH05B3/02H05B3/145
Inventor 才胜何志祝廖文辉
Owner CHINA AGRI UNIV