Good thermal conductivity, high-temperature strength and low tritium retention favour the use of tungsten as a plasma facing material for fusion reactors. However, high ductile-to-brittle transition temperature (DBTT) of tungsten limits its application. The most viable way of industrial-scale tungsten production is powder metallurgy. Conventional methods use high temperatures and long dwell times. However, this can degrade the mechanical properties of tungsten due to excessive grain growth. Therefore, new sintering techniques and unconventional sintering parameters are explored. The aim is to achieve less demanding single step processing method with the potential to improve mechanical properties. In this study, pure tungsten samples were prepared by Field Assisted Sintering using different dwell times, atmospheres and foils. The effect of the parameters on the impurity concentration was analysed and the mechanical behaviour was evaluated using stress-strain analysis. Significant improvement in mechanical performance has been reached for short dwell times (2 min) and vacuum or Ar + H₂ atmosphere.

良好的导热性，高温强度和较低的retention保持力有利于将钨用作聚变反应堆的面向等离子体的材料。然而，钨的高延性-脆性转变温度（DBTT）限制了它的应用。工业规模钨生产的最可行方法是粉末冶金。常规方法使用高温和长停留时间。然而，由于过度的晶粒生长，这会降低钨的机械性能。因此，探索了新的烧结技术和非常规的烧结参数。目的是实现要求较低的单步加工方法，并具有改善机械性能的潜力。在这项研究中，使用不同的停留时间，气氛和金属箔通过现场辅助烧结制备了纯钨样品。分析了参数对杂质浓度的影响，并使用应力应变分析评估了机械性能。在短停留时间（2分钟）和真空或Ar + H的条件下，机械性能已获得显着改善_2个气氛。