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发明授权
US09353578B2 Hardfacing compositions, methods of applying the hardfacing compositions, and tools using such hardfacing compositions 有权
表面硬化组合物，施用表面硬化组合物的方法以及使用这种表面硬化组合物的工具

Hardfacing compositions, methods of applying the hardfacing compositions, and tools using such hardfacing compositions
摘要：
A hardfacing composition comprising an iron-based binder alloy; and a carbide phase comprising a sintered carbide and a cast tungsten carbide, wherein the cast carbide is present in a quantity of at least 22% by weight, based on the total weight of the carbide phase, and the cast carbide comprises particles having sizes in the range of from 30 to 60 mesh. Also provided is a hardfacing composition comprising an iron-based binder alloy; and a carbide phase comprising a super dense sintered carbide and one or more additional carbide materials, wherein the super dense sintered carbide is present in a quantity of at least 10 percent by weight (% w), based on the total weight of the carbide phase, and comprises particles having sizes in the range of from 16 to 40 mesh. Included are methods of manufacturing such hardfacing compositions and downhole tools having such improved hardfacing compositions applied thereon.
摘要（中）：

包含铁基粘合剂合金的表面硬化组合物; 以及包含烧结碳化物和铸造碳化钨的碳化物相，其中所述铸碳化物以基于所述碳化物相的总重量为至少22重量％的量存在，并且所述铸造碳化物包括具有 范围从30到60目。 还提供了包含铁基粘合剂合金的硬化组合物; 和包含超密度烧结碳化物和一种或多种另外的碳化物材料的碳化物相，其中所述超致密烧结碳化物以基于碳化物相的总重量的至少10重量％（％w）的量存在 ，并且包含尺寸在16至40目范围内的颗粒。 包括制造这种表面硬化组合物的方法以及应用于其上的具有这种改进的耐硬化组合物的井下工具。

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