For prospective nuclear fusion reactors like DEMO, material problems face a serious challenge. A highly integrated approach is required when utilizing materials in a fusion environment. When it comes to identifying new components, damage tolerance, power exhaust, and oxidation resistance during accidental air ingress are all critical factors. Advanced materials, such as Wf/W or W/Cu, as well as Wf/Cu composites, allow the next step toward a fusion reactor. These Wf/W composites are brittle in nature and lead to crack propagation in the composites at higher temperature and load conditions. Hence, a coating is required to reduce the crack propagation effects. By producing yttrium oxide, the reduction in brittleness through the extrinsic process is an important step.The main focus of this work therefore lies in the investigation of the interfacial fracture behavior of Wf/W composites with different engineered interfaces in order to optimize the interface between W fiber and W matrix to achieve the necessary energy dissipation. In this work continuous CVD process is used to deposit the required coating on the tungsten fibers. The deposited coating are then analysed by the scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy analysis and X-ray diffraction, these results depicted the formation of a uniform layer of Y2O3 on the tungsten fibers and also intern resulting in the reduction of the formation of tungsten oxide and improving the properties of the Wf/W composites which can be used in applications.