SPARK PLASMA SINTERING OF SILICON CARBIDE POWDERS WITH CARBON AND BORON AS ADDITIVES

机译：用碳和硼作为添加剂的碳化硅粉末的火花血浆烧结

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SiC powders with carbon and boron as sintering additives were firstly mixed homogeneously using gel casting process and then sintered through spark plasma sintering method at temperatures in the range of 1600-2000 °C. Results showed that with the increase of the sintering temperature, the density as well as the flexural strength increased. The relative density and flexural strength reached to 99.4% and 449±56 MPa for samples sintered at 2000 °C, respectively. Short carbon fibers, with the volume fraction of 30%, were added to increase the fracture toughness of the material. Fiber pull-out phenomenon was observed in the obtained composites, of which the flexural strength and the fracture toughness are 117+2 MPa and 4.50+1.44 MPa-m, respectively.

机译：用碳和硼作为烧结添加剂的SiC粉末首先使用凝胶浇铸方法均匀混合，然后在1600-2000℃的温度下通过火花等离子体烧结方法烧结。结果表明，随着烧结温度的增加，密度以及弯曲强度的增加。对于在2000℃的样品中，相对密度和弯曲强度分别达到99.4％和449±56MPa，分别烧结在2000℃。加入短碳纤维，增加30％，以增加材料的断裂韧性。在所得复合材料中观察到纤维拉出现象，其中弯曲强度和断裂韧性分别为117 + 2MPa和4.50±1.44mPa-m。

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《Global Forum on Advanced Materials and Technologies for Sustainable Development》|2017年|xii 574 p.|共8页
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Jinhua Yang; Jian Jiao; Ling Wang;
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SPARK PLASMA SINTERING OF SILICON CARBIDE POWDERS WITH CARBON AND BORON AS ADDITIVES

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