High-density WC-FeNi ceramic-metal (cermet) composites were fabricated using liquid-phase spark plasma sintering/field-assisted sintering technology (SPS/FAST) with in-situ formation of metal binder phase. The precursor materials were micron-sized powders of WC, Fe, Ni, and C. A low melting point from a eutectic reaction of the powders enabled the in-situ formation of FeNi alloy and facilitates liquid-phase sintering of the WC. The carbon powder was added to stabilize the formation of the binder phase. Electron backscatter diffraction (EBSD) was performed to measure grain size and orientation. The composite exhibited a 99% theoretical density and a microstructure consisting of rounded and contiguous WC grains. The average grain size is 10.5 μm. The composite has a maximum hardness of 16.1 GPa. This research provides a fast and cost-effective approach to fabricate hard metals.

利用液相火花等离子体烧结/场辅助烧结技术（SPS / FAST）并原位形成金属结合相，制备了高密度WC-FeNi陶瓷金属复合材料。前体材料是WC，Fe，Ni和C的微米级粉末。粉末的低共熔反应所产生的低熔点使其能够原位FeNi合金的形成并促进WC的液相烧结。加入碳粉以稳定粘合剂相的形成。进行电子背散射衍射（EBSD）以测量晶粒尺寸和取向。该复合材料显示出99％的理论密度和由圆形和连续的WC晶粒组成的微观结构。平均晶粒尺寸为10.5μm。该复合材料的最大硬度为16.1 GPa。这项研究提供了一种快速且具有成本效益的方法来制造硬质金属。