Laser cutting of alumina based Oxide-oxide ceramic matrix composites

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-05-19 DOI:10.1016/j.optlastec.2025.113169

Priyanka Ghosh, Joseph Nix, Helen Elkington, Kursad Sezer, Sundar Marimuthu

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引用次数: 0

Abstract

Ceramic matrix composites comprising of alumina-based fibre and reinforcement (Ox-Ox CMCs) exhibit great potential for deployment in high-temperature applications, such as aero-engines and power generation gas turbines. This is due to their notable properties, such as light-weight, resistance to corrosion and oxidation, and high thermal tolerance. However, Ox-Ox CMCs are hard, and brittle, rendering them challenging to machine using conventional and non-conventional techniques. To gain insight into their laser machinability and material removal mechanisms, this study examines the influence of key process variables on cutting performance, surface roughness, and dross formation. The findings suggest that continuous wave fibre lasers can be used to achieve both high-quality and high-speed cutting of 5 mm-thick Ox-Ox CMCs while controlling surface roughness and minimising defects. The use of oxygen assist gas resulted in fusion-based cutting mechanics along with an improved surface finish compared to using compressed air or inert gases. The multi-pass cutting technique enhances melt ejection and reduces dross formation, promoting cleaner cuts.

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氧化铝基氧化物-氧化物陶瓷基复合材料激光切割

由氧化铝基纤维和增强材料组成的陶瓷基复合材料（Ox-Ox cmc）在航空发动机和发电燃气轮机等高温应用中表现出巨大的应用潜力。这是由于其显著的性能，如重量轻，耐腐蚀和抗氧化，以及高耐热性。然而，Ox-Ox cmc又硬又脆，这使得使用常规和非常规技术对其进行加工具有挑战性。为了深入了解其激光可加工性和材料去除机制，本研究考察了关键工艺变量对切割性能、表面粗糙度和碎屑形成的影响。研究结果表明，连续波光纤激光器可以在控制表面粗糙度和最小化缺陷的同时，实现5 mm厚Ox-Ox cmc的高质量和高速切割。与使用压缩空气或惰性气体相比，氧气辅助气体的使用产生了基于熔合的切割机制，并改善了表面光洁度。多道次切割技术提高了熔体喷射，减少了碎屑的形成，促进了更清洁的切割。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems