Tungsten borides (WB_x; x = 2.5 or 4.5) with an increasing substitution of tungsten by zirconium from 0 to 24 at.% were synthesized by spark plasma sintering (SPS) for the first time. The influence of the holding time (2.5–30 min) on the densification behavior, microstructure evolution and development of the properties of W–Zr–B compounds were studied. The samples were characterized using scanning electron microscopy (SEM) for microstructure analysis, X-ray diffraction (XRD) for phase identification, Vickers micro-indentation for microhardness measurements, tribological tests to determine the coefficient of friction and specific wear rate, as well as measurements of electrical conductivity. The XRD results confirm the presence of the WB₄ phase in the microstructure, despite the high sintering temperature (1800 °C) and small overstoichiometric excess of boron (4.5) addition in the sintered samples. This is caused by the high heating rate (400 °C/min), short holding time (2.5 min) and addition of zirconium. The Vickers hardness (HV) values measured at 1 N are 24.8 ± 2.0 and 26.6 ± 1.8 GPa for 24 at.% zirconium in WB_2.5 and for 0 at.% zirconium in WB_4.5, respectively. In addition, the hardest sample (W_0.76Zr_0.24B_2.5) showed electrical conductivity up to 3.961·10⁶ S/m, which is similar to WC–Co cemented carbides. The friction and wear test results reveal the formation of a boron-based film which seems to play the role of a solid lubricant.

 首次通过火花等离子体烧结（SPS）合成了钨在0至24 at。％的范围内被钨取代的硼化钨（WB _x ; x = 2.5或4.5）。研究了保温时间（2.5–30分钟）对W–Zr–B化合物的致密化行为，微观结构演变和性能发展的影响。使用扫描电子显微镜（SEM）进行样品微观结构分析，使用X射线衍射（XRD）进行相鉴定，通过维氏显微压痕进行显微硬度测量，通过摩擦学测试确定摩擦系数和比磨损率，以及对样品进行表征。电导率的测量。XRD结果证实了WB ₄的存在尽管烧结温度高（1800°C），并且在烧结样品中添加的硼化学计量过量（4.5）略有过量，但仍处于微观结构中。这是由于升温速率高（400°C / min），保温时间短（2.5 min）和添加锆引起的。对于WB _2.5中的24 at。％锆和WB _4.5中的0 at。％锆，在1 N下测得的维氏硬度（HV）值分别为24.8±2.0和26.6±1.8 GPa 。另外，最硬的样品（W _0.76 Zr _0.24 B _2.5）显示出高达3.961·10 ^6的电导率。S / m，类似于WC-Co硬质合金。摩擦和磨损测试结果表明，硼基薄膜的形成似乎起着固体润滑剂的作用。