无机材料学报
無機材料學報
무궤재료학보
JOURNAL OF INORGANIC MATERIALS
2001年
1期
165-168
,共4页
徐鑫%黄莉萍%葛其明%符锡仁
徐鑫%黃莉萍%葛其明%符錫仁
서흠%황리평%갈기명%부석인
氧氮化硅%无压烧结%显微结构%力学性能
氧氮化硅%無壓燒結%顯微結構%力學性能
양담화규%무압소결%현미결구%역학성능
以β-Si3N4和SiO2粉末为原料，以MgAl2O4为烧结添加剂，通过无压烧结制备出致密的Si2N2O陶瓷材料. 所得材料由柱状Si2N2O颗粒和少量-Si3N4颗粒复合组成，研究了烧结温度对材料显微结构的影响，发现材料的断裂大部分是穿晶断裂.
以β-Si3N4和SiO2粉末為原料，以MgAl2O4為燒結添加劑，通過無壓燒結製備齣緻密的Si2N2O陶瓷材料. 所得材料由柱狀Si2N2O顆粒和少量-Si3N4顆粒複閤組成，研究瞭燒結溫度對材料顯微結構的影響，髮現材料的斷裂大部分是穿晶斷裂.
이β-Si3N4화SiO2분말위원료，이MgAl2O4위소결첨가제，통과무압소결제비출치밀적Si2N2O도자재료. 소득재료유주상Si2N2O과립화소량-Si3N4과립복합조성，연구료소결온도대재료현미결구적영향，발현재료적단렬대부분시천정단렬.
Dense Si2N2O ceramics were pressurelessly sintered from β-Si3N4 and SiO2 powders with 4wt% MgAl2O4 additive. Microstructures of this material consisted of rod-like Si2N2O grains and a little amount of β-Si3N4. The effect of sintering temperatures on the microstructures was studied. Crack deflection profile suggested transgranular fracture of the material.
