Carbothermal reduction sintering of silicon carbide
碩士 === 國立聯合大學 === 材料科學工程學系碩士班 === 96 === The objective of this study is to investigate the structure and electrical resistivity of SiC ceramics that added different amount of boron carbides, sintered at air and CO/CO2 in 1350 ~ 1400℃. This research shows that optimal mixed ratio of partical size of...
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ndltd-TW-096NUUM51590012015-10-13T14:52:52Z http://ndltd.ncl.edu.tw/handle/89974486629123552901 Carbothermal reduction sintering of silicon carbide 碳熱還原燒結碳化矽陶瓷 Jia-hong Chen 陳嘉鴻 碩士 國立聯合大學 材料科學工程學系碩士班 96 The objective of this study is to investigate the structure and electrical resistivity of SiC ceramics that added different amount of boron carbides, sintered at air and CO/CO2 in 1350 ~ 1400℃. This research shows that optimal mixed ratio of partical size of 1 ~ 10 μm and 40 ~ 60 μm by slip-casting in plaster of Paris and comparison of properties of bulk density, microstructure and electrical resistivity of sintered body was produced by adding amount of 0%、1%、2%、5% of boron carbide and sintering at various temperature in difference atmospheres. According to experiment result, we obtained the optimal condition without plasticizer that particle size of 1 ~ 10μm, 40 ~ 60μm and water of mixed ratio 3:3:4. We obtained the result that the highest density of sintered SiC by adding 1% boron carbide using Archimedes’ principle. Comparison of the result that the bulk density of sintering in air higher than sintering at CO/CO2 atmosphere due to formation of silica by SiC of oxidation infiltrated between particles. According the analysis result by XRD, generation of β-SiC by sintering at CO/CO2 atmosphere leads to electrical resistivity of sintering body decrease. In addition, we obtained that relative content of β–SiC significantly increased with higher reaction temperature by analysis of XRD and NMR. none 施並裕 2008 學位論文 ; thesis 95 zh-TW |
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碩士 === 國立聯合大學 === 材料科學工程學系碩士班 === 96 === The objective of this study is to investigate the structure and electrical resistivity of SiC ceramics that added different amount of boron carbides, sintered at air and CO/CO2 in 1350 ~ 1400℃.
This research shows that optimal mixed ratio of partical size of 1 ~ 10 μm and 40 ~ 60 μm by slip-casting in plaster of Paris and comparison of properties of bulk density, microstructure and electrical resistivity of sintered body was produced by adding amount of 0%、1%、2%、5% of boron carbide and sintering at various temperature in difference atmospheres. According to experiment result, we obtained the optimal condition without plasticizer that particle size of 1 ~ 10μm, 40 ~ 60μm and water of mixed ratio 3:3:4.
We obtained the result that the highest density of sintered SiC by adding 1% boron carbide using Archimedes’ principle. Comparison of the result that the bulk density of sintering in air higher than sintering at CO/CO2 atmosphere due to formation of silica by SiC of oxidation infiltrated between particles. According the analysis result by XRD, generation of β-SiC by sintering at CO/CO2 atmosphere leads to electrical resistivity of sintering body decrease. In addition, we obtained that relative content of β–SiC significantly increased with higher reaction temperature by analysis of XRD and NMR.
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author_facet |
none Jia-hong Chen 陳嘉鴻 |
author |
Jia-hong Chen 陳嘉鴻 |
spellingShingle |
Jia-hong Chen 陳嘉鴻 Carbothermal reduction sintering of silicon carbide |
author_sort |
Jia-hong Chen |
title |
Carbothermal reduction sintering of silicon carbide |
title_short |
Carbothermal reduction sintering of silicon carbide |
title_full |
Carbothermal reduction sintering of silicon carbide |
title_fullStr |
Carbothermal reduction sintering of silicon carbide |
title_full_unstemmed |
Carbothermal reduction sintering of silicon carbide |
title_sort |
carbothermal reduction sintering of silicon carbide |
publishDate |
2008 |
url |
http://ndltd.ncl.edu.tw/handle/89974486629123552901 |
work_keys_str_mv |
AT jiahongchen carbothermalreductionsinteringofsiliconcarbide AT chénjiāhóng carbothermalreductionsinteringofsiliconcarbide AT jiahongchen tànrèháiyuánshāojiétànhuàxìtáocí AT chénjiāhóng tànrèháiyuánshāojiétànhuàxìtáocí |
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