氮化铝是一种六方纤锌矿结构的共价键化合物。室温强度高、热膨胀系数小、抗熔融金属侵蚀的能力强、介电性能良好，这些得天独厚的优点使其成为高导热材料而引起国内外的普遍关注。作为高性能的介电陶瓷，氮化铝可以取代碳化硅，甚至部分取代氧化铝，被视为新一代很有发展前途的优良的基片材料。
Aluminum nitride is a covalent bond compound with hexagonal wurtzite structure. High room temperature strength, low thermal expansion coefficient, strong corrosion resistance of molten metals and good dielectric properties have attracted widespread attention at home and abroad due to their unique advantages. As a high performance dielectric ceramics, aluminum nitride can replace silicon carbide, or even partly replace alumina, and is regarded as a promising new generation of excellent substrate materials.