Continuum modeling of B4C densification during Spark Plasma Sintering
Source abstract
Abstract
Boron carbide (B4C) powder was consolidated at 45 MPa by Spark Plasma Sintering (SPS) for 20 min from 1450 to 2000 °C. The density of the B4C reached 99.6% at 2000 °C. A continuum model was applied to describe the densification mechanism of B4C powder under SPS conditions. The shrinkage rate was sensitive to particle size and temperature. The effect of porosity on thermal diffusion was significant, especially for small particle sizes. It appears that there is Joule heating, discharge, and electromagnetic field involved during the SPS of B4C. The current can enhance the sintering process, and it can obviously reduce the creep activation energy.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Powder Metallurgy Techniques and Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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