A new method for direct welding of alumina and zirconia ceramics by ultrashort pulse laser for high temperature application

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2024-10-23 DOI:10.1016/j.jeurceramsoc.2024.117015

Hao Yuan, Chun Li, Xiaoqing Si, Bo Yang, Mingshen Li, Yongxv Liu, Yunfei Cao, Jian Cao

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引用次数: 0

Abstract

The direct welding of alumina and zirconia ceramics by ultrashort pulse laser is presented for the first time. Compared to traditional dissimilar ceramic joining techniques such as brazing and diffusion welding, this method shows various advantages, including operation at room-temperature, higher welding efficiency, and negligible impact on base materials. The joint microstructure consists of a combination of Al₂O₃ and ZrO₂ phases, without new phases detected. By adjusting the laser focal point position, the phase content within joint is effectively regulated, successfully preventing crack formation in alumina substrate. The influence of laser power and welding speed on joint morphology and mechanical property is fully investigated. The highest four-point bending strength of 365.5 MPa and shear strength of 33.4 MPa are achieved. After experiencing thermal cycling test at 1000°C, the joint strength and microstructure does not exhibit significant changes, demonstrating the excellent high-temperature durability of the sample.

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利用超短脉冲激光直接焊接氧化铝和氧化锆陶瓷的高温应用新方法

首次提出了利用超短脉冲激光直接焊接氧化铝和氧化锆陶瓷的方法。与传统的异种陶瓷连接技术（如钎焊和扩散焊）相比，这种方法具有多种优势，包括可在室温下操作、焊接效率更高以及对母材的影响微乎其微。接合处的微观结构由 Al2O3 和 ZrO2 相组合而成，没有检测到新的相。通过调整激光焦点位置，可有效调节焊点内的相含量，成功地防止了氧化铝基材裂纹的形成。充分研究了激光功率和焊接速度对接头形貌和机械性能的影响。该材料的最高四点弯曲强度达到 365.5 兆帕，剪切强度达到 33.4 兆帕。在经历了 1000°C 的热循环试验后，接头强度和微观结构没有发生明显变化，表明样品具有出色的高温耐久性。

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.