为了提高多孔Al2 O3－ZrO2（Y2 O3）陶瓷的强度，以尿素和淀粉为燃料，用低温燃烧法合成活性较高的Al2 O3－ZrO2（Y2 O3）复合粉体，并用此粉体制备了多孔Al2 O3－ZrO2（Y2 O3）陶瓷，研究燃烧前驱体中淀粉的外加量（质量分数分别为0、15％、25％、35％、45％、55％）对多孔陶瓷显气孔率、抗折强度和显微结构的影响。结果表明：与尿素为燃料相比，以尿素和淀粉为燃料能提高复合粉体的烧结活性，有效改善多孔陶瓷的显微结构，提高多孔陶瓷的抗折强度。
The active Al2O3-ZrO2(Y2O3)composite powder was firstly prepared using urea and starch as fuels by low-temperature combustion to improve the strength of porous of Al2O3-ZrO2(Y2O3)ceramics. Then the porous Al2O3-ZrO2(Y2O3)ceramics were prepared using this powder.Effects of starch additions (0,15%,25%,35%,45%,and 55%,in mass)to the precursors on apparent porosity,modulus of rupture, and microstructure of the porous ceramics were investigated.The experimental results show that compared with the urea fuel,fuels containing urea and starch can significantly improve the sintering activity of the composite powder and optimize the microstructure of the ceramics,finally increase the modulus of rupture of th e cerami cs.
参考文献
| [1] | 杨大正,张跃,王艳,李慧玉,姜秀明,孙本良.燃烧合成法制备α-Al2O3-Cr2N多孔陶瓷[J].耐火材料,2007(01):61-62. |
| [2] | 吴海波,袁波,韩建燊,王刚.多孔陶瓷材料的制备研究进展[J].耐火材料,2012(03):230-235. |
| [3] | 王利,周建民,曹宇,陈晨,周国红.亚微米ZrO2粉体对氧化铝陶瓷力学性能的影响[J].中国粉体技术,2013(03):43-46. |
| [4] | Kishino J.;Sakuma T.;Nishiyama A. .MECHANICAL PROPERTIES OF SINTER-FORGED AL2O3-ZRO2 CERAMICS[J].Journal of Materials Science,1996(18):4991-4995. |
| [5] | 黎芳 .铝锆复合材料的增韧机理[J].耐火材料,1999,33(04):245-245. |
| [6] | Claussen N .Fracture toughness of Al2 O3 with an unstabilized ZrO2 dispersed phase[J].Journal of the American Ceramic Society,1976,59(01):49-51. |
| [7] | W. Pabst;E. Gregorova;I. Sedlarova .Preparation and characterization of porous alumina-zirconia composite ceramics[J].Journal of the European Ceramic Society,2011(14):2721-2731. |
| [8] | Gaiye LI;Hong QI;Yiqun FAN .Toughening macroporous alumina membrane supports with YSZ powders[J].CERAMICS INTERNATIONAL,2009(4):1641-1646. |
| [9] | 张寒,赵惠忠,陈金凤,余俊,聂建华.ZrO2复合A12O3基陶瓷的抗热震性能[J].材料科学与工程学报,2013(02):264-267. |
| [10] | 张慧梅,薛群虎,田晓利,黄敬敬.凝胶结合Al2O3-ZrO2复相陶瓷性能研究[J].中国陶瓷,2011(02):23-26. |
| [11] | 吴会中,戴长虹,马晓雁.多孔陶瓷的微波烧结技术[J].耐火材料,2004(04):283-285. |
| [12] | 宿新泰,燕青芝,葛昌纯.低温燃烧合成超细陶瓷微粉的最新研究[J].化学进展,2005(03):430-436. |
| [13] | 饶平跟;吴建青;叶建东 等.低温烧结Al2 O3/3Y-TYP复合材料的力学性能[J].华南理工大学学报(自然科学版),2004,32(07):1-4. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%