制造和表征Al2O3-西洛复合热用于热接口材料的制造和表征
Seul-Ki Kim1,2, Yeong-Jin Koo1, Hyun Sik Kim3
1Semiconductor Materials Center, Korea Institute of Ceramic Engineering & and Technology, Jinju 52851, Republic of Korea.
Materials (Basel, Switzerland)
|February 24, 2024
概括
表面处理的氧化 (Al2O3) 纳米颗粒粉增强了素复合热的导热性. 本研究提供了使用优化纳米粒子合成和处理创建高性能热接口材料的指导方针.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 热接口材料 (TIM) 对于电子设备的热管理至关重要.
- 改善TIM的导热性对于设备的性能和寿命至关重要.
- 氧化 (Al2O3) 纳米粒子是增强TIM热性能的有希望的填充剂.
研究的目的:
- 为了研究表面处理的Al2O3纳米颗粒粉对Al2O3-西洛复合热的导热率的影响.
- 探索不同的表面处理 (脱水,脱碳,化) 的Al2O3纳米颗粒.
- 制定制造高性能Al2O3-siloxane复合热的准则.
主要方法:
- 使用磁带造技术制造Al2O3-siloxane复合热.
- 通过火焰融合过程合成Al2O3纳米粒子粉末.
- 在合成的Al2O3纳米粒子上应用各种表面处理.
- 制造的复合材料的导热性能的表征.
主要成果:
- 通过对Al2O3纳米颗粒粉进行表面处理,可以显著提高Al2O3-西洛复合的导热率.
- 在表面处理后,具有最佳球化晶体结构的Al2O3纳米粒子与未经处理的纳米粒子相比,产生了更高的导热率.
- 优化纳米粒子合成和表面修饰是提升 TIM 性能的关键.
结论:
- 表面处理的Al2O3纳米颗粒有效地提高了基于西洛的复合热的导热性.
- 该研究为开发具有卓越散热能力的先进热接口材料提供了基础.
- 为优化制造具有高导热性的Al2O3-siloxane复合而制定了指导方针.
相关概念视频
03:06Alkali Metals
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
Table 1: Properties of the alkali metals
02:44Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
01:46Oxidative Cleavage of Alkenes: Ozonolysis
In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.