采用轻质CaCO3(或纯铝酸钙水泥)和α-氧化铝为原料合成了二铝酸钙(CA2)材料,研究了反应原料、热处理温度和成型压力对CA2烧结性能和显微结构的影响,检测CA2的热膨胀系数,并借助XRD、TG-DSC和SEM等测试手段分析和观察了材料的合成过程及显微结构.结果表明:采用轻质CaCO3(或纯铝酸钙水泥)和活性氧化铝为原料可以合成低膨胀系数CA2材料;坯体成型压力对试样烧结性能没有显著影响;反应原料和热处理温度不同导致CA2材料的烧结性能和显微结构有较大的差异.
参考文献
| [1] | Weber D;Bischoff A .Grossite (CaAl4O7)-a rare phase in terrestrial rocks and meteorites[J].EUROPEAN JOURNAL OF MINERALOGY,1994,6(04):51. |
| [2] | Cridal E;De Aza S.Calcium hexaluminates as refractory material[A].Aachen,1991:403. |
| [3] | Koichiro Fukuda;Kaori Yamauchi .Anisotropic thermal expansion in CaAl_4O_7[J].Journal of Materials Research,2002(5):1050-1054. |
| [4] | Yoshikazu Suzuki;Tatsuki Ohji .Anisotropic thermal expansion of calcium dialuminate (CaAl{sub}4O{sub}7) simulated by molecular dynamics[J].Ceramics International,2004(1):57-61. |
| [5] | Jonas S;Nadachowski F;Szwagierczak D .Refractory composites of deeply depressed thermal expansior[J].Key Engineering Materails,2002,206(02):1169. |
| [6] | Jonas S;Nadachowski F .Behavior of calcium dialuminatebased refractory compositions on heating[J].Adv Sci Techn,2003,35(02):133. |
| [7] | Jonas S;Nadachowski F.Calcium dialuminte used as matrix of new low thermal expansion composites[A].Berlin,1999:194. |
| [8] | Jonas S;Nadachowski F;Szwagierczak D .A new non-silicate refractory of low thermal expansion[J].Ceramics International,1998,24(03):211. |
| [9] | Jonas S;Nadachowski F;Szwagierczak D .Low thermal expansion refractory composites based on CaAl4O7[J].Ceramics International,1999,25(01):77. |
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