首页> 外文会议>International Symposium on Nitrides; 20060403-05; Eskisehir(TK) >Pressureless Sintering of Hexagonal Boron Nitride Powders
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Pressureless Sintering of Hexagonal Boron Nitride Powders

机译:六方氮化硼粉末的无压烧结

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Pressureless sintering of hexagonal boron nitride (BN) with and without additives was performed using a powder which was previously nitrided at 900℃ and then heat treated at 1400℃. Sintering additives were B_2O_3 (2, 4, 6 wt %) and Y_2O_3 (2, 4, 6 wt %) and sintering temperatures was 1900℃. Sintered samples were characterized by XRD, SEM, micro hardness, density and mercury porosimeter measurements. Maximum density values of samples were 1.56 g/cm~3 without additives and 1.63 g/cm~3 with additives. Hardness values of samples were found to improve with the presence of additives.
机译:使用预先在900℃进行氮化,然后在1400℃进行了热处理的粉末,对有无添加剂的六方氮化硼(BN)进行无压烧结。烧结添加剂为B_2O_3(2、4、6 wt%)和Y_2O_3(2、4、6 wt%),烧结温度为1900℃。通过XRD,SEM,显微硬度,密度和水银孔隙率仪对烧结样品进行表征。不含添加剂的样品的最大密度值为1.56 g / cm〜3,含添加剂的样品的最大密度值为1.63 g / cm〜3。发现样品的硬度值随着添加剂的存在而提高。

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