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Preparation method of high-strength carbon-ceramic brake disc and product
According to the preparation method of the high-strength carbon ceramic brake disc, the technological process and parameters are optimized, a chemical deposition process is added after a siliconizing treatment step, SiH2Cl2 and NH3 are used as gas sources, silicon nitride is deposited at 700-800 DEG C, original cracks of a silicon carbide matrix are made up by the deposited silicon nitride, and the strength of the matrix is improved. As the deposition temperature is low, cracks generated between the carbon fibers and the carbon fibers when the carbon fibers are cooled from the deposition temperature to the room temperature are few, and the strength stability of the carbon-ceramic brake disc is guaranteed.
本发明提供一种高强碳陶刹车盘制备方法，通过优化工艺流程和参数，在渗硅处理阶后增加了化学沉积工艺，通过SiH2Cl2和NH3作为气源，在700‑800℃沉积氮化硅，碳化硅基体原本存在的裂纹被沉积的氮化硅弥补，提高了基体强度。由于沉积温度低，从沉积温度冷却至室温时和碳纤维之间由于冷却产生的裂纹少，保证了碳陶刹车盘的强度稳定性。
Preparation method of high-strength carbon-ceramic brake disc and product
According to the preparation method of the high-strength carbon ceramic brake disc, the technological process and parameters are optimized, a chemical deposition process is added after a siliconizing treatment step, SiH2Cl2 and NH3 are used as gas sources, silicon nitride is deposited at 700-800 DEG C, original cracks of a silicon carbide matrix are made up by the deposited silicon nitride, and the strength of the matrix is improved. As the deposition temperature is low, cracks generated between the carbon fibers and the carbon fibers when the carbon fibers are cooled from the deposition temperature to the room temperature are few, and the strength stability of the carbon-ceramic brake disc is guaranteed.
本发明提供一种高强碳陶刹车盘制备方法，通过优化工艺流程和参数，在渗硅处理阶后增加了化学沉积工艺，通过SiH2Cl2和NH3作为气源，在700‑800℃沉积氮化硅，碳化硅基体原本存在的裂纹被沉积的氮化硅弥补，提高了基体强度。由于沉积温度低，从沉积温度冷却至室温时和碳纤维之间由于冷却产生的裂纹少，保证了碳陶刹车盘的强度稳定性。
Preparation method of high-strength carbon-ceramic brake disc and product
一种高强碳陶刹车盘制备方法及产品
LIU SONGQING (Autor:in) / LIU KAI (Autor:in)
09.08.2024
Patent
Elektronische Ressource
Chinesisch
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