拉夫堡大学瞄准英国关键材料主权缺口

The next generation of energy and defence technology hinges on metals like tungsten, niobium, and tantalum. Yet, these materials present a dual challenge: they are notoriously difficult to process and are often sourced from geopolitically sensitive regions. As nations, including the UK, seek to reduce their reliance on foreign supply chains for these strategic materials, a technological solution is emerging from the lab. Researchers at Loughborough University are pioneering a domestic processing method using advanced electron beam technology (EBM), a sophisticated form of 3D printing that could redefine material sovereignty.

新一代能源与国防技术的关键在于钨、铌、钽等金属。然而，这些材料带来了双重挑战：它们不仅加工难度极高，且通常产自地缘政治敏感地区。随着包括英国在内的各国寻求减少对这些战略材料外国供应链的依赖，一项技术解决方案正从实验室中诞生。拉夫堡大学的研究人员正在开创一种利用先进电子束技术（EBM）的国内加工方法，这种精密的3D打印形式可能重新定义材料主权。

For over fifteen years, Professor Moataz Attallah and his team have explored the limits of laser-based additive manufacturing. They identified a clear barrier: certain critical metals—copper, tungsten, tantalum, molybdenum, and niobium—are either too reflective, require impractically high temperatures, or react destructively when exposed to air during conventional laser processing.

十五年来，Moataz Attallah教授及其团队不断探索激光增材制造的极限。他们发现了一个明显的障碍：某些关键金属——铜、钨、钽、钼和铌——要么反射率过高，要么需要不切实际的高温，要么在传统激光加工接触空气时会产生破坏性反应。

Electron Beam Melting (EBM) overcomes these hurdles by operating in a vacuum. This eliminates atmospheric interference for oxygen-sensitive materials and generates the immense power density needed to process these extreme metals. This makes EBM a natural fit for sectors where failure is not an option, such as aerospace, defence, and next-generation energy systems. For creators and engineers looking to push boundaries, understanding these advanced processes is key, much like selecting the right premium STL files is crucial for a successful print.

电子束熔融（EBM）通过在真空环境中运行克服了这些障碍。这消除了对氧敏感材料的大气干扰，并产生了加工这些极端金属所需的巨大功率密度。这使得EBM天然适用于航空航天、国防和下一代能源系统等不容失败的领域。对于渴望突破边界的创造者和工程师而言，理解这些先进工艺至关重要，正如选择正确的优质STL文件对成功打印至关重要一样。

What sets the Freemelt system apart at Loughborough is its open architecture. Unlike many closed industrial 3D printers, it grants researchers unparalleled control. They can directly modify process variables, test non-standard alloy compositions, and develop entirely new manufacturing workflows.

Freemelt系统在拉夫堡大学的独特之处在于其开放式架构。与许多封闭式工业3D打印机不同，它赋予研究人员无与伦比的控制权。他们可以直接修改工艺变量、测试非标准合金成分，并开发全新的制造工作流程。

“Electron beam technology succeeds where other additive techniques have struggled,” said Professor Attallah. “The Freemelt system stands out by being open, flexible, and accessible for researchers. It allows us to experiment with parameters, explore new alloys, and develop processes that are impossible on closed commercial platforms.” This flexibility is a cornerstone of innovation, similar to how an open library of 3D printing models empowers makers to create without constraints.

“在其他增材技术举步维艰的领域，电子束技术取得了成功，”Attallah教授表示，“Freemelt系统的突出之处在于其开放性、灵活性和对研究人员的可访问性。它使我们能够试验参数、探索新合金，并开发在封闭商业平台上无法实现的工艺。”这种灵活性是创新的基石，正如开放的3D打印模型库如何赋予创客无拘无束的创造能力。

This research freedom is already translating into tangible projects with high-stakes applications:

这种研究自由已经转化为具有高风险应用的实际项目：

“If we want to build nuclear fusion reactors or next-generation spacecraft, we need sustainable manufacturing methods for critical materials,” Professor Attallah stated. “EBM not only enables this but also offers the scalability and efficiency to make it viable.”

“如果我们想要建造核聚变反应堆或下一代航天器，就需要关键材料的可持续制造方法，”Attallah教授强调，“EBM不仅使之成为可能，还提供了可扩展性和效率，使其切实可行。”

This work is part of a larger national priority. The question of material sovereignty—how the UK sources, processes, and controls critical materials—has moved to the forefront of strategy. In April 2025, the UK Ministry of Defence underscored this shift in its first Defence Advanced Manufacturing Strategy, identifying additive manufacturing as a key pillar for securing military supply chains and long-term planning. The research at Loughborough is a direct response to this call, aiming to close the critical materials gap and foster a resilient, home-grown advanced manufacturing sector.

这项工作是更广泛国家优先事项的一部分。材料主权问题——英国如何获取、加工和控

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