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Silicon nitride composite material, preparation method thereof and heating body
The invention relates to a silicon nitride composite material, a preparation method thereof and a heating body, the silicon nitride composite material comprises the following raw materials by mass: 80-93 parts of silicon nitride powder, 5-15 parts of a sintering aid, 1-5 parts of a reinforcing agent and 1-5 parts of a binder; the reinforcing agent is selected from at least one of nitride whiskerswith a length-diameter ratio of 1: (20-30) and carbide whiskers with a length-diameter ratio of 1: (20-30). Specific components and proportions are adopted, and the sintering aid and the binder with specific mass and the nitride whiskers and/or carbide whiskers with specific length-diameter ratios act on the silicon nitride powder together so that the bending strength of the material can be enhanced, and the heat conductivity of the silicon nitride ceramic material can also be improved. When the silicon nitride composite material is applied to the field of heating, the electric energy conversion efficiency of a heating body can be improved by 1-3 times so that the service life of a device is prolonged, and the aims of saving energy and reducing consumption are fulfilled.
本发明涉及一种氮化硅复合材料及其制备方法、发热体，其中，氮化硅复合材料的原料按照质量份数计，包括氮化硅粉体80份～93份、烧结助剂5份～15份、增强剂1份～5份及粘结剂1份～5份；其中，增强剂选自长径比为1:(20～30)的氮化物晶须和长径比为1:(20～30)的碳化物晶须中的至少一种。采用特定的组分及配比，通过特定质量的烧结助剂、粘结剂和具有特定长径比的氮化物晶须和/或碳化物晶须对氮化硅粉体的共同作用，不仅可以增强材料的抗弯强度，还能够提高氮化硅陶瓷材料的热导率。该氮化硅复合材料应用于发热领域时，能提高发热体的电能转换效率1～3倍，进而提高了器件的使用寿命，达到节能降耗的目的。
Silicon nitride composite material, preparation method thereof and heating body
The invention relates to a silicon nitride composite material, a preparation method thereof and a heating body, the silicon nitride composite material comprises the following raw materials by mass: 80-93 parts of silicon nitride powder, 5-15 parts of a sintering aid, 1-5 parts of a reinforcing agent and 1-5 parts of a binder; the reinforcing agent is selected from at least one of nitride whiskerswith a length-diameter ratio of 1: (20-30) and carbide whiskers with a length-diameter ratio of 1: (20-30). Specific components and proportions are adopted, and the sintering aid and the binder with specific mass and the nitride whiskers and/or carbide whiskers with specific length-diameter ratios act on the silicon nitride powder together so that the bending strength of the material can be enhanced, and the heat conductivity of the silicon nitride ceramic material can also be improved. When the silicon nitride composite material is applied to the field of heating, the electric energy conversion efficiency of a heating body can be improved by 1-3 times so that the service life of a device is prolonged, and the aims of saving energy and reducing consumption are fulfilled.
本发明涉及一种氮化硅复合材料及其制备方法、发热体，其中，氮化硅复合材料的原料按照质量份数计，包括氮化硅粉体80份～93份、烧结助剂5份～15份、增强剂1份～5份及粘结剂1份～5份；其中，增强剂选自长径比为1:(20～30)的氮化物晶须和长径比为1:(20～30)的碳化物晶须中的至少一种。采用特定的组分及配比，通过特定质量的烧结助剂、粘结剂和具有特定长径比的氮化物晶须和/或碳化物晶须对氮化硅粉体的共同作用，不仅可以增强材料的抗弯强度，还能够提高氮化硅陶瓷材料的热导率。该氮化硅复合材料应用于发热领域时，能提高发热体的电能转换效率1～3倍，进而提高了器件的使用寿命，达到节能降耗的目的。
Silicon nitride composite material, preparation method thereof and heating body
氮化硅复合材料及其制备方法、发热体
ZENG XIAOFENG (author) / WEI YICHENG (author) / ZENG QINGDANG (author) / CHEN JUXI (author) / LI YONGQUAN (author)
2021-01-12
Patent
Electronic Resource
Chinese
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