It reported that a new type of the structure was found on the cutting plate surface of the WC-7(W,Ti)C-10Co cemented carbide of T5K10 brand after contact with the Ni₃Al melt at 1530°C in a vacuum, which includes external WC-(Co,Ni,Al) and intermediate WC-(W,Ti)C-(Co,Ni,Al) layers with varying chemical and phase composition by thickness. The maximum content and dimensions on the Co-based phase are characteristic of the structure on the boundary of the outer and transition layers, which by 1.7 and 2 times, respectively, exceed the similar indicators in the basic structure of this sample. The formation of such a structure occurs by the output of W, C and the Co-based phase from the volume on the surface of the plate and the subsequent absorption of it by N and Al from the Ni₃Al melt. It is shown that in the formed layer structure on the plate surface there is a residual microporosity but less than that in the basic structure outside the surface layer, which also decreased in comparison with the level of microporosity in the structure of the initial plate.

中文翻译：

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在与Ni 3 Al熔体接触的区域内WC-7（W，Ti）C-10Co硬质合金切板表面上形成WC-（Co，Ni，Al）层结构

据报道，在真空中于1530°C与Ni ₃ Al熔体接触后，T5K10品牌的WC-7（W，Ti）C-10Co硬质合金的切割板表面发现了一种新型结构，其中包括外部WC-（Co，Ni，Al）和中间WC-（W，Ti）C-（Co，Ni，Al）层，其化学和相组成随厚度变化。Co基相的最大含量和最大尺寸是外层和过渡层边界结构的特征，分别是该样品基本结构中相似指标的1.7和2倍。通过从板表面上的体积输出W，C和Co基相并随后由Ni ₃吸收N和Al来形成这种结构。铝熔体 结果表明，在板表面上形成的层结构中，存在残余的微孔，但比在表层外的基本结构中的残余微孔少，与初始板的结构中的微孔水平相比，它也降低了。