A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ceramic heater and preparation method thereof
The invention relates to a ceramic heater and a preparation method thereof. The heating element is prepared by taking tungsten carbide as a main component for the first time, the heating element is embedded into a base with silicon nitride as the main component so that the thermal expansion coefficients of the base and the heating element which are attached to each other are close, the thermal stress of the base and the heating element during use can be effectively reduced and the service life of the heater is prolonged; the heating element can resist high temperature; after electrification isperformed for 10-30s, the surface temperature of the heating body is not lower than 800 DEG C and can be as high as 1100 DEG C. Compared with a common tungsten filament, the heater has better temperature resistance, the bending strength is higher than 800 MPa, the strength is high, the base has high acid and alkali corrosion resistance, the corrosion resistance is far higher than that of a metalbase, the heat conductivity is larger than 30 W/(m.K), the heat transfer performance is good, and the fundamental performance of the heater can be brought into play easily.
本发明涉及一种陶瓷加热器及其制备方法。首次提出利用碳化钨为主要成分制备发热元件，将其嵌入在以氮化硅为主要成分基中，使相互贴合的所述基体与发热元件热膨胀系数相近，可以有效减少使用时两者的热应力，进而延长加热器的使用寿命，且该发热元件可耐高温，通电后10‑30s,发热体表面温度不低于800℃，可高达1100℃，比普通的钨丝耐温性好，抗弯强度高于800MPa，强度高，其中基体具有高的耐酸碱腐蚀性，其耐腐蚀能力远远高于金属基体，其热导率大于30W/(m·K)，热传递性能好，有利于加热器根本性能的发挥。
Ceramic heater and preparation method thereof
The invention relates to a ceramic heater and a preparation method thereof. The heating element is prepared by taking tungsten carbide as a main component for the first time, the heating element is embedded into a base with silicon nitride as the main component so that the thermal expansion coefficients of the base and the heating element which are attached to each other are close, the thermal stress of the base and the heating element during use can be effectively reduced and the service life of the heater is prolonged; the heating element can resist high temperature; after electrification isperformed for 10-30s, the surface temperature of the heating body is not lower than 800 DEG C and can be as high as 1100 DEG C. Compared with a common tungsten filament, the heater has better temperature resistance, the bending strength is higher than 800 MPa, the strength is high, the base has high acid and alkali corrosion resistance, the corrosion resistance is far higher than that of a metalbase, the heat conductivity is larger than 30 W/(m.K), the heat transfer performance is good, and the fundamental performance of the heater can be brought into play easily.
本发明涉及一种陶瓷加热器及其制备方法。首次提出利用碳化钨为主要成分制备发热元件，将其嵌入在以氮化硅为主要成分基中，使相互贴合的所述基体与发热元件热膨胀系数相近，可以有效减少使用时两者的热应力，进而延长加热器的使用寿命，且该发热元件可耐高温，通电后10‑30s,发热体表面温度不低于800℃，可高达1100℃，比普通的钨丝耐温性好，抗弯强度高于800MPa，强度高，其中基体具有高的耐酸碱腐蚀性，其耐腐蚀能力远远高于金属基体，其热导率大于30W/(m·K)，热传递性能好，有利于加热器根本性能的发挥。
Ceramic heater and preparation method thereof
一种陶瓷加热器及其制备方法
WEI ZHONGHUA (author) / ZHENG YU (author) / LI BIN (author) / TONG YAQI (author) / WANG ZICHENG (author) / ZHANG ZHE (author) / CHEN BO (author) / ZHANG WEIRU (author)
2020-08-28
Patent
Electronic Resource
Chinese
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