Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-thermal-conductivity and high-strength silicon carbide ceramic and preparation method thereof
The invention discloses high-thermal-conductivity and high-strength silicon carbide ceramic and a preparation method thereof, and belongs to the technical field of ceramic materials, the high-thermal-conductivity and high-strength silicon carbide ceramic comprises the following raw materials: silicon carbide, aluminum nitride, a liquid-phase sintering aid, silicon nitride whiskers, boron nitride nanosheets and carbon powder; the preparation method of the silicon carbide ceramic comprises the following steps: S1, adding formula raw materials into a ball mill for ball milling, then drying to obtain mixed powder, sieving the mixed powder, then adding into an isostatic press for cold isostatic pressing treatment to obtain a briquette; and S2, filling a graphite mold of a hot-pressing sintering furnace with the briquette, calcining at 2000 DEG C for 1 h under argon protection and external pressure, cooling to 1800 DEG C, continuing calcining for 2 h, cooling, demolding, carrying out surface grinding and polishing, carrying out oxidation annealing treatment, and naturally cooling to room temperature to obtain the product, according to the invention, the raw material formula is matched with the preparation method, so that the prepared silicon carbide ceramic has excellent bending strength and heat-conducting property at the same time.
本发明公开了一种高导热高强度碳化硅陶瓷及其制备方法，属于陶瓷材料技术领域，包括以下原料：碳化硅、氮化铝、液相烧结助剂、氮化硅晶须、氮化硼纳米片和炭粉；该碳化硅陶瓷包括以下步骤：步骤S1、将配方原料加入球磨机中进行球磨，然后进行烘干，得到混合粉末，将混合粉末过筛后加入等静压机中进行冷等静压处理，得到压块；步骤S2、将压块装填进热压烧结炉的石墨模具中，在氩气保护和外加压力下，先在2000℃下煅烧1h，然后降至1800℃继续煅烧2h，冷却脱模后进行表面打磨、抛光，然后进行氧化退火处理，自然冷却至室温后即得；本发明将原料配方与制备方法相配合，使制得的碳化硅陶瓷同时具有优异的抗弯强度和导热性能。
High-thermal-conductivity and high-strength silicon carbide ceramic and preparation method thereof
The invention discloses high-thermal-conductivity and high-strength silicon carbide ceramic and a preparation method thereof, and belongs to the technical field of ceramic materials, the high-thermal-conductivity and high-strength silicon carbide ceramic comprises the following raw materials: silicon carbide, aluminum nitride, a liquid-phase sintering aid, silicon nitride whiskers, boron nitride nanosheets and carbon powder; the preparation method of the silicon carbide ceramic comprises the following steps: S1, adding formula raw materials into a ball mill for ball milling, then drying to obtain mixed powder, sieving the mixed powder, then adding into an isostatic press for cold isostatic pressing treatment to obtain a briquette; and S2, filling a graphite mold of a hot-pressing sintering furnace with the briquette, calcining at 2000 DEG C for 1 h under argon protection and external pressure, cooling to 1800 DEG C, continuing calcining for 2 h, cooling, demolding, carrying out surface grinding and polishing, carrying out oxidation annealing treatment, and naturally cooling to room temperature to obtain the product, according to the invention, the raw material formula is matched with the preparation method, so that the prepared silicon carbide ceramic has excellent bending strength and heat-conducting property at the same time.
本发明公开了一种高导热高强度碳化硅陶瓷及其制备方法，属于陶瓷材料技术领域，包括以下原料：碳化硅、氮化铝、液相烧结助剂、氮化硅晶须、氮化硼纳米片和炭粉；该碳化硅陶瓷包括以下步骤：步骤S1、将配方原料加入球磨机中进行球磨，然后进行烘干，得到混合粉末，将混合粉末过筛后加入等静压机中进行冷等静压处理，得到压块；步骤S2、将压块装填进热压烧结炉的石墨模具中，在氩气保护和外加压力下，先在2000℃下煅烧1h，然后降至1800℃继续煅烧2h，冷却脱模后进行表面打磨、抛光，然后进行氧化退火处理，自然冷却至室温后即得；本发明将原料配方与制备方法相配合，使制得的碳化硅陶瓷同时具有优异的抗弯强度和导热性能。
High-thermal-conductivity and high-strength silicon carbide ceramic and preparation method thereof
一种高导热高强度碳化硅陶瓷及其制备方法
CAO SHULONG (Autor:in) / HUANG BINGFENG (Autor:in) / ZHANG XIA (Autor:in)
30.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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