造孔剂法制备多孔铁碳合金的实验研究
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摘要
基于水解沉淀法,通过添加造孔剂制备出了多孔铁碳合金.以Fe Cl3·6H2O为主要原料,淀粉作造孔剂,向制得的胶体中加入不同配比的淀粉,经过滤、烘干、煅烧,再在650、700、750和800℃的温度条件下用氢气还原得到产物.用SEM、XRD和X射线能谱手段对样品的微观结构和形貌进行了表征,研究了淀粉添加量、氢气还原温度对多孔铁碳合金的影响,分析了产物粒径大小与还原温度之间的关系.结果表明,淀粉的最佳添加量为22%,氢气的最佳还原温度为750℃,产物的粒径随着还原温度的升高而增大,产物微粒的平均粒径为25~55 nm,且还原产物中碳的质量分数为3%~4.5%.
Porous iron carbon alloy was prepared by adding pore- forming agent,based on the hydrolysis precipitation method. Fe Cl_3·6H_2O was used as a main rawmaterial and starch was used as a pore- forming agent. D ifferent ratios of starch were added into prepared colloid. The products were obtained by filtration,drying,calcination and hydrogen reduction at 650 ℃ 、700 ℃ 、750 ℃ 、800 ℃. The microstructure and morphology of the samples were characterized by SEM,X R D and X ray energy spectra. Effects of different starch amount and hydrogen reduction temperature on the porous iron carbon alloys were studied. R elationship between size of the products and reduction temperature was analyzed. The results showed that the optimum amount of starch is 22%, the optimum hydrogen reduction temperature is 750 ℃. In the prepared samples,the average particle size of the product increases with reduction temperature increase,the average particle size of the product is 25 ~ 55 nm,and the mass fraction of Cin the reduction product is about 3% ~ 4. 5%.
Porous iron carbon alloy was prepared by adding pore- forming agent,based on the hydrolysis precipitation method. Fe Cl_3·6H_2O was used as a main rawmaterial and starch was used as a pore- forming agent. D ifferent ratios of starch were added into prepared colloid. The products were obtained by filtration,drying,calcination and hydrogen reduction at 650 ℃ 、700 ℃ 、750 ℃ 、800 ℃. The microstructure and morphology of the samples were characterized by SEM,X R D and X ray energy spectra. Effects of different starch amount and hydrogen reduction temperature on the porous iron carbon alloys were studied. R elationship between size of the products and reduction temperature was analyzed. The results showed that the optimum amount of starch is 22%, the optimum hydrogen reduction temperature is 750 ℃. In the prepared samples,the average particle size of the product increases with reduction temperature increase,the average particle size of the product is 25 ~ 55 nm,and the mass fraction of Cin the reduction product is about 3% ~ 4. 5%.
引文
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[3]魏剑,桑国臣.金属多孔材料在建筑领域的应用展望[J].热加工工艺,2009,38(22):59-63.(Wei Jian,Sang Guochen.Application of metal porous materials in architecture[J].Hot W orking T echnology,2009,38(22):59-63.)
[4]王丹,李钟萍,王雪,等.铁基多孔金属材料的研究现状[J].热加工工艺,2011,40(8):75-78.(Wang Dan,Li Zhongping,Wang Xue,et al.Research status on iron-based porous metallic materials[J].Hot W orking T echnology,2011,40(8):75-78.)
[5]王宏伟,李庆芬,李智伟,等.铸造法制备泡沫金属材料[J].铸造技术,2007,28(9):1257-1261.(Wang Hongwei,Li Qingfen,Li Zhiwei,et al.Preparation of metal foam using casting technology[J].Foundry T echnology,2007,28(9):1257-1261.)
[6]Miyoshi T,Itoh M,Akiyama S,et al.ALPORAS aluminum foam:production process,properties,and applications[J].Advanced Engineering M aterials,2002,2(4):179-183.
[7]Covaciu M,Walczak M,Ramos-grez J.A method for manufacturing cellular metals with open-type and close-type porosities[J].M ater Lett,2011,65(19):2947.
[8]李虎,虞奇峰,张波,等.浆料发泡法制备生物活性多孔钛及其性能[J].稀有金属材料与工程,2006,35(1):154-157.(Li Hu,Yu Qifeng,Zhang Bo,et al.Fabrication and characterization of bioactive porous titanium[J].R are M etal M aterials and Engineering,2006,35(1):154-157.)
[9]黄国涛,王应武.泡沫金属电极材料研究现状[J].有色金属加工,2011,40(1):3-6.(Huang Guotao,Wang Yingwu.Research on foamed metal electrodes materials[J].N onferrous M etals Processing,2011,40(1):3-6.)
[10]迟煜頔,汤慧萍,汪强兵,等.增塑挤压法制备不锈钢多孔过滤管[J].粉末冶金技术,2011,29(1):34-37.(Chi Yudi,Tang Huiping,Wang Qiangbing,et al.Preparation of stainless steel porous filter tube by powder extrusion molding and sintering[J].Powder M etallurgy T echnology,2011,29(1):34-37.)
[11]Jaroslav Capek,Dalibor Vojtech.Microstructural and mechanical characteristics of porous iron prepared by powder metallurgy[J].M aterials Science and Engineering C,2014,43:494-501.
[12]Taichi Murakami,Takuma Akagi,Eiki Kasai.Development of porous iron based material by slag foaming and its reduction[J].Procedia Materials Science,2014,4:27-32.
[13]刘京雷,叶先勇,何元章,等.多孔金属材料制备方法的研究进展[J].材料导报,2013,27(7):90-93.(Liu Jinglei,Ye Xianyong,He Yuanzhang,et al.Progress in preparation of porous metallic materials[J].M aterials R eview,2013,27(7):90-93.)
[14]刘培生,黄林国.多孔金属材料制备方法[J].功能材料,2002,33(1):5-8.(Liu Peisheng,Huang Lin Guo.Preparation methods for porous metal materials[J].Functional M aterials,2002,33(1):5-8.)
[15]刘玫潭,蔡旭升,何丽娇,等.造孔剂含量对多孔Si C预制件孔隙率的影响及孔隙率测定方法探究[J].材料导报,2013,27(7):108-112.(Liu Meitan,Cai Xusheng,He Lijiao,et al.Effect of poreforming agents content on porosity and experimental study on porosity measurement of porous Si C preform[J].M aterials R eview,2013,27(7):108-112.)