It was revealed that, when the cobalt content kept constant, the fracture toughness increased with the increase of WC particle size.

结果发现，当钴含量不变时，硬质合金的断裂韧性随w C粒度的增大而增大。

youdao

Results show that simple composition and stable properties of W oxide is a prerequisite for quality WC powder with uniform particle size and less aggregate.

结果表明：保证原料氧化钨相成分单一和性能稳定是生产粒度均匀、聚团少的优质WC粉的前提；

youdao

When WC content is more then 50%, spray-fusing technological property becomes worse, hardness of sprayed coating and low-stress abrasive particle wear resistance are weaken.

当w（WC）大于50%时，WC的加入使喷熔工艺性能变得极差，喷熔层的硬度和耐低应力磨粒磨损性能降低。

youdao