New route to densify tantalum carbide at 1400 degrees C by spark plasma sintering

作者：Liu Limeng^*; Ye Feng; Zhou Yu

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2011, 528(13-14): 4710-4714.

DOI：10.1016/j.msea.2011.02.074

• Tantalum carbide
• Spark plasma sintering
• Densification

Tantalum carbide with a TaC(0.9) composition was sintered to 96% relative density by spark plasma sintering at 1400 degrees C for 5 min, using commercial micrometric Ta and TaC powders as the starting materials. This achievement was dependent on the delicate rearrangement of the heating process which limits evaporation-condensation and promotes the mass transportation in association with 0.9TaC + Ta = TaC(0.9) reaction. The dense TaC(0.9) ceramic had a uniform microstructure composed of equiaxed grains, and showed flexure strength up to similar to 498 MPa.

• 出版日期2011-5-24
• 单位哈尔滨工业大学