The effects of rapid pulse electric current sintering (PECS), substitution of WC by NbC and Co by Ni, and carbide additives (TiC and Mo₂C) on the microstructure, elastic modulus, B3B transverse rupture strength (TRS) and high temperature sliding wear on WC-Co, WC-Ni, NbC-Co and NbC-Ni cermets were studied. Additions of x% Mo₂C and y% TiC (where x and y were <10 wt%), coupled with PECS, significantly refined the NbC-Ni cermet's carbide grain size from ~5.0 μm to <0.8 μm, giving mechanical properties comparable to WC-Co and WC-Ni cermets: >14 GPa hardness and ~10 MPa.m^1/2 fracture toughness (K_IC) and ball-on-three-balls (B3B) TRS > 1600 MPa. The sintering techniques had negligible effect on the samples' elastic and shear modulus, and all WC-based samples had higher elastic modulus than all NbC-based samples (by ~120 GPa). High temperature sliding wear tests were carried out using a ball-on-disk tribometer, with a 10 N force, at a sliding speed of 1.34 m/s for 0.8 km (10 min) and 2.4 km (30 min), using 100Cr6 (AISI 52100) steel balls at 400 °C and 0% humidity. For the 2.4 km sliding distance, all the WC cermets had lower wear volumes than NbC cermets, with LPS WC-0.5Cr₃C₂-10Co having the lowest wear volume. Additions of TiC and Mo₂C to NbC-12Ni improved the sliding wear resistance, with TiC having the greater effect, reducing the sample wear rate by over 30% from 15.1 × 10⁻⁶ mm³/N·m to 9.4 × 10⁻⁶ mm³/N·m after sliding distance of 2.4 km. Generally, the LPS samples had lower wear volumes than the corresponding SPS samples, due to higher K_1c and TRS.

快速脉冲电流烧结（PECS），用NbC替代WC并用Ni替代Co和碳化物添加剂（TiC和Mo ₂ C）对组织，弹性模量，B3B横向断裂强度（TRS）和高温滑动的影响研究了WC-Co，WC-Ni，NbC-Co和NbC-Ni金属陶瓷的磨损。添加x％Mo ₂ C和y％TiC（其中x和y <10 wt％），再加上PECS，可将NbC-Ni金属陶瓷的碳化物晶粒尺寸从5.0μm显着细化到<0.8μm，可提供可比的机械性能到WC-Co和WC-Ni金属陶瓷：硬度> 14 GPa和〜10 MPa.m ^1/2断裂韧性（K _IC）和三对球（B3B）TRS> 1600 MPa。烧结技术对样品的弹性模量和剪切模量的影响可忽略不计，所有基于WC的样品的弹性模量均高于所有基于NbC的样品（约120 GPa）。使用圆盘摩擦计在10 N的力下以1.34 m / s的滑动速度进行0.8 km（10 min）和2.4 km（30 min）的高温滑动磨损测试，使用100Cr6（ AISI 52100）钢球在400°C和0％湿度下。对于2.4 km的滑动距离，所有WC金属陶瓷的磨损量均低于NbC金属陶瓷，其中LPS WC-0.5Cr ₃ C ₂ -10Co的磨损量最低。TiC和Mo _2的添加C至NBC-12Ni改善的滑动的耐磨损性，与具有更大的影响的TiC，30％以上的15.1×10降低采样磨损率^-6 毫米³ / N·m至9.4×10 ^-6 毫米³ / N·米后滑行距离为2.4公里。通常，由于较高的K _1c和TRS ，LPS样品的磨损量比相应的SPS样品低。