TUNGSTEN CARBIDE-BASED SINTER AND ABRASION-RESISTANT MEMBERS USING SAME

摘要

Provided are: a tungsten carbide-based sinter having a high grain growth inhibiting effect with respect to tungsten carbide, and having excellent chemical durability, such as corrosion resistance, in addition to mechanical strength; and abrasion-resistant members, such as heads for application tools, cutting blades, cutter blades, lens molds, and seal rings, which use the tungsten carbide-based sinter. The tungsten carbide-based sinter comprises a first phase composed primarily of tungsten carbide, and a second phase composed primarily of a carbonitride with one type or multiple types of elements selected from a group comprising Group 4 elements, Group 5 elements and Group 6 elements, wherein the volume fraction of the second phase is 0.01 percent by volume to less than 40 percent by volume, and the remainder is the first phase.