The effect of process parameters and vanadium carbide on hardness, toughness and structural properties of the tungsten carbide-cobalt (WC-Co) nanocomposite has been investigated using micro-hardness tester, X-ray diffraction and scanning electron microscopy (SEM) with attached energy dispersive spectroscopy, respectively. To suppress grain growth, a high percentage (upto 10 wt. %) of vanadium carbide (VC) has been taken as a grain growth inhibitor as well as a hardener. WC-20Co composite with 7.5 wt% VC, heat treated at 1100 °C holding time for 2 hours, possesses high hardness (1687 HV) when the volume fraction of tungsten carbide (WC) and Co₆W₆C phases have been taken in the ratio of 2:1. High hardness and toughness have been obtained at 1100 °C for 2 h heat-treated sample. High VC content with 8 h holding time has increased the porosity in the samples.

中文翻译：

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工艺参数和VC含量对WC-20Co纳米复合材料结构和力学性能的影响

使用显微硬度计，X射线衍射和扫描电子显微镜（SEM）研究了工艺参数和碳化钒对碳化钨-钴（WC-Co）纳米复合材料的硬度，韧性和结构性能的影响。色散光谱法。为了抑制晶粒长大，已采用高百分比（最高10 wt。％）的碳化钒（VC）作为晶粒长大抑制剂和硬化剂。具有7.5 wt％VC的WC-20Co复合材料，在1100°C的保持时间下进行了2小时的热处理，当碳化钨（WC）和Co ₆ W ₆的体积分数较高时，具有很高的硬度（1687 HV）。C相的比例为2：1。在1100°C下对2 h热处理的样品获得了高硬度和韧性。VC含量高，保持时间为8 h，增加了样品的孔隙率。