Electric field assisted rapid connection method for yttrium oxide transparent ceramic and metal: Fid-Bau Portal

Electric field assisted rapid connection method for yttrium oxide transparent ceramic and metal

LIU YAN / ZHANG KEYING / LI TIANYU / LIU XUEJIAN / HUANG ZHENGREN

The invention relates to an electric field assisted rapid connection method for yttrium oxide transparent ceramic and metal. The quick connection method comprises the following steps: grinding and polishing surfaces to be connected of yttrium oxide transparent ceramic and metal, so that the surface roughness Ra of the surfaces to be connected of the yttrium oxide transparent ceramic is less than or equal to 0.08 mu m, and the surface roughness Ra of the surfaces to be connected of the metal is less than or equal to 2 mu m; assembling the first electrode, the yttrium oxide transparent ceramic, the metal and the second electrode in sequence to form a to-be-connected sample, placing the to-be-connected sample in an electric field auxiliary diffusion bonding device, applying 0.3-5MPa axial pressure to the to-be-connected sample, heating to 850-950 DEG C when the vacuum degree reaches below 5 * 10 <-3 > Pa, and applying an electric field to the to-be-connected sample through the electrodes, and after the specified current density is reached, continuously electrifying and preserving heat for 60-300s, and cooling to room temperature at the cooling rate of 3-5 DEG C/min to obtain the yttrium oxide transparent ceramic and metal connector.

本发明涉及一种氧化钇透明陶瓷与金属电场辅助快速连接方法。所述快速连接方法包括：对氧化钇透明陶瓷和金属的待连接面进行磨削和抛光处理以使氧化钇透明陶瓷的待连接面的表面粗糙度Ra≤0.08μm、金属的待连接面的表面粗糙度Ra≤2μm，按照第一电极/氧化钇透明陶瓷/金属/第二电极的次序装配形成待连接样品并置于电场辅助扩散连接装置中，对所述待连接样品施加0.3～5MPa轴向压力，在真空度达到5×10‑3Pa以下时加热至850～950℃并通过电极对待连接样品施加电场，在达到规定的电流密度后，继续通电保温60～300s后以3℃/min～5℃/min的降温速率冷却至室温，得到氧化钇透明陶瓷与金属的连接体。

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