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- W935547206 abstract "采用高压气-固燃烧合成法制备了密度为1.79g/cm3的h-BN-SiO2陶瓷和密度为1.70g/cm3的h-BN陶瓷,抗弯强度分别为76MPa和42.8MPa,硬度分别为212(HV)和108(HV).分析了氮气压力和初始孔隙率对反应物燃烧和产物的影响,结果发现在适当的初始孔隙率和氮气压力条件下(对于h-BN-SiO2:48%≤ρ≤52%,75MPa≤P≤85MPa;对于h-BN:48%≤ρ≤52%,95MPa≤P≤110MPa)可以得到无裂纹的产物.产物中的片状h-BN颗粒为各向同性,高的氮气压力导致h-BN颗粒尺寸增大,同时发现h-BN-SiO2产物中SiO2以玻璃相的形式存在于晶相B7O的边缘,B7O的产生与原料SiO2及其氧化物杂质有关." @default.
- W935547206 created "2016-06-24" @default.
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- W935547206 date "2001-10-20" @default.
- W935547206 modified "2023-09-28" @default.
- W935547206 title "高压气-固燃烧合成h-BN-SiO 2 和h-BN陶瓷材料的研究" @default.
- W935547206 hasPublicationYear "2001" @default.
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