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首页> 外文期刊>Journal of Materials Engineering and Performance >Study on Microstructures and Mechanical Properties of Foam Titanium Carbide Ceramics Fabricated by Reaction Sintering Process
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Study on Microstructures and Mechanical Properties of Foam Titanium Carbide Ceramics Fabricated by Reaction Sintering Process

机译：反应烧结工艺制造的泡沫碳化物陶瓷微观结构和力学性能研究

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摘要

Foam titanium carbide (TiC) ceramics with a three-dimensional network structure were fabricated by the reaction sintering process, in which polyurethane foam was taken as the template, and TiO2 and phenolic resin were used as the reactants. Phase, microstructures and fracture morphologies of foam TiC ceramics were characterized by x-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The results show that when the mass ratios of phenolic resin and TiO2 (F/T) are (0.8-1.2): 1, foam TiC ceramics with pure TiC phase can be formed. As the F/T ratios increase, crystal lattice parameters of fabricated foam TiC ceramics become bigger. When the value of F/T decreases from 1.2 to 0.8, grain size of TiC grows larger and microstructures get denser; meanwhile, the compressive strength increases from 0.10 to 1.05 MPa. Additionally, either raising the sintering temperatures or extending holding time can facilitate the completion of the reaction process and increase the compressive strength.
机译：通过反应烧结过程制造具有三维网络结构的泡沫碳化钛（TIC）陶瓷，其中将聚氨酯泡沫作为模板，使用TiO 2和酚醛树脂作为反应物。通过X射线衍射（XRD）和扫描电子显微镜（SEM）的表征泡沫状陶瓷的相位，微观结构和断裂形貌。结果表明，当酚醛树脂和TiO 2（F / T）的质量比（0.8-1.2）：1时，可以形成具有纯TIC相的泡沫状陶瓷。随着F / T比率的增加，制造的泡沫陶瓷的晶格参数变得更大。当F / T的值从1.2降低到0.8时，TIC的晶粒尺寸变大，微观结构变得更密集;同时，抗压强度从0.10增加到1.05MPa。另外，展开烧结温度或延伸保持时间可以促进反应过程的完成并增加抗压强度。

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