采用醇盐水解工艺结合碳热氮化还原法进行纳米AlN 粉末的制备.以异丙醇铝、果糖、无水乙醇为原料，制备出透明的凝胶，干燥后得到分子水平混合的前驱体，在1450℃经碳热氮化还原法制备出单相AlN纳米粉末.系统研究了前躯体形成机制，以及碳热氮化还原的温度和时间、C/Al 摩尔比、凝胶温度等因素对合成粉体的影响.采用 XRD、TG-DSC 和SEM对合成产物的特性进行了分析和表征.通过优化工艺，制得类球形的 AlN 粉末颗粒，其颗粒大小为30~90 nm.
In this paper,nano AlN particles were prepared by combining alkoxide hydrolysis with carbothermal reduction and nitridation method.Using aluminum isopropoxide,fructose and ethanol as starting materials,a transparent gel was prepared.Then a molecular level mixing precursor was obtained under drying.Single-phase AlN particles were synthesized through carbothermal reduction and nitridation at 1 450 ℃.The forming mecha-nism of the precursor was studied,as well as the effect of gelation temperature,C/Al ratio,calcination temper-ature and time on the synthesis of AlN.XRD,TG-DSC and SEM were utilized to characterize the synthesized powder.Through optimizing process,equiaxed AlN particles were obtained with an diameter ranging from 30 to 90 nm.
参考文献
| [1] | Tummala R R .Ceramic and glass-ceramic packaging in the 1990s[J].Journal of the American Ceramic Society,1991,74(05):895-908. |
| [2] | Sheppard L M .Aluminium nitride:a versatile but chal-lenging material[J].AMERICAN CERAMIC SOCIETY BULLETIN,1990,69(11):1801-1812. |
| [3] | Scholz H;Greil P .Nitridation reactions of molten Al-(Mg,Si)alloys[J].Journal of Materials Science,1 9 9 1,26(03):669-673. |
| [4] | Ma Chao;Chen Guangde;Yuan Jinshe et al.Studies on the structural properties of AIN powder prepared by di-rect nitriding[J].Journal of Fuctional Materials,2011,42(09):1599-1605. |
| [5] | Weimer A W;Cochran G A;Eisman G A et al.Rapid process for manufacturing aluminum nitride powder[J].Journal of the American Ceramic Society,1994,77(04):3-7. |
| [6] | Wei Yingna;Wei Hengyong;Zhao Dongmei et al.Syn-thesis of aluminum nitride ultrafine powder via carbon thermal reduction process based on non-hydrolytic sol-gel method[J].Journal of Fuctional Materials,2013,44(17):1-4. |
| [7] | Baik Y;Shanker K;Mcdermic J R et al.Carbothermal synthesis of aluminum nitride using sucrose[J].Journal of the American Ceramic Society,1994,77(08):2165-2167. |
| [8] | Jung W S;Ahn S K .Preparation of aluminum nitride powder from a(hydroxo)(succinato)aluminium(Ⅲ)complex[J].Journal of Materials Chemistry,1994,4(06):949-953. |
| [9] | Lokesh Chandra Pathak;Ajoy Kumar Ray;Samar Das;C. S. Sivaramakrishnan;P. Ramachandrarao .Carbothermal synthesis of nanocrystalline aluminum nitride powders[J].Journal of the American Ceramic Society,1999(1):257-260. |
| [10] | Mingli Qin;Xueli Du;Jian Wang .Influence of carbon on the synthesis of AlN powder from combustion synthesis precursors[J].Journal of the European Ceramic Society,2009(4):795-799. |
| [11] | Preiss H.;Szulzewsky K.;Berger LM. .THERMAL TREATMENT OF BINARY CARBONACEOUS/ZIRCONIA GELS AND FORMATION OF ZR(C,O,N) SOLID SOLUTIONS[J].Carbon: An International Journal Sponsored by the American Carbon Society,1996(1):109-119. |
| [12] | Zhan Z Q;Zeng H C .A catalyst-free approach for sol-gel synthesis of highly mixed ZrO2-SiO2 oxides[J].JOURNAL OF NON-CRYSTALLINE SOLIDS,1999,243(01):26-38. |
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