Microstructure and properties of WC‐8Co cemented carbides prepared by multiple spark plasma sintering
Source abstract
Abstract
Abstract In this study, WC‐8Co cemented carbides were prepared by spark plasma sintering. When the samples sintered at 1300℃ were cooled to room temperature, the samples were sintered multiple times at 1250℃. The changes in microstructure and mechanical properties of WC‐8Co cemented carbides prepared by multiple spark plasma sintering were studied. The hardness of cemented carbides increased in the first two sintering, reaching 16.5 GPa. However, the hardness decreased seriously in the last two sintering. The attenuation rates of hardness were 6.2% and 2.5% due to the abnormal coarse grains. Furthermore, the crack path along the grain boundary was almost straight, causing a decrease in the indentation fracture toughness of cemented carbides. Additionally, the grains of cemented carbides were abnormally coarsened, and the morphologies of grains became unstable due to multiple sintering.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced materials and composites · Diamond and Carbon-based Materials Research · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering Nanjing University of Science and Technology Nanjing China
Funding
National Natural Science Foundation of China
References (32)
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