AI Compute Boom: Why Is Aluminum Nitride Sold Out?

The surge in AI large-model training and inference demand has pushed high-power AI chip power consumption into the kilowatt era. The true bottleneck of computing hardware has shifted from "raw computing power" to "thermal dissipation capability." In high-power packaging, conventional alumina ceramics can no longer meet thermal conductivity requirements. AlN ceramic, with its high thermal conductivity, excellent electrical insulation, and low coefficient of thermal expansion, has become the "thermal lifeline" for optical modules, AI chip packaging, and power semiconductors.

The core of aluminum nitride ceramics lies in the powder. The purity, particle size distribution, and oxygen content of AlN powder directly determine the thermal conductivity of ceramic substrates. This is why leading global aluminum nitride powder suppliers have long dominated the high-end grades—proprietary high-pure powder formulations and sintering processes cannot be replicated overnight with capital alone.

Aluminum nitride powder price has shown a structural divergence over the past two years: mid-to-low-end filler powders have remained stable or even declined slightly, while high-end ultra-high thermal conductivity grades have continued to climb alongside surging AI server demand, with some specifications facing "orders but no stock."

On the device side, aluminium nitride ceramic fabricated into ceramic electronic substrates​ must simultaneously dissipate massive chip heat, match the thermal expansion of silicon chips, and resist cracking over prolonged operation. Loaded with thermal management ceramic fillers, epoxy and silicone systems can also efficiently channel heat away—this is the underlying logic behind thermal pads, gap fillers, and thermal interface gels.

Overseas manufacturers have been slow to expand capacity, creating a verification window for domestic aluminum nitride suppliers: from volume production of mid-to-low-end products to penetrating customer production lines with high-thermal-conductivity powders and high-flatness substrates. In the short term, supply tightness will persist; in the long run, computing autonomy and security will inevitably require a closed-loop domestic AlN supply chain spanning powders, substrates, and fillers.

Xiamen Juci manufactures High Purity AlN Powder ,  AlN Granule,  Thermal Conductive Filler and AlN Ceramics . Please contact us if you have any requirements.

Contact: Jenny Qin / 진현혜 

Phone: +86 151-5177-8700

Wechat ID: JENNY-8866

Xiamen Juci Technology Co., Ltd.

Email: qinxianhui@chinajuci.com

Website: www.jucialnglobal.com