采用普通球磨细化工艺和两次球磨细化工艺制备出两类Al2O3/ZrB2/ZrO2复合陶瓷材料,并对材料的硬度、断裂韧性和抗弯强度进行了测试和分析.结果表明,两次球磨细化工艺可以明显降低ZrB2/ZrO2晶粒的尺寸至0.2～0.4μm,使其在Al2O3基体内的分布更均匀,并能有抑制Al2O3晶粒的异常长大.与普通细化工艺相比较,此工艺改变了材料的断裂模式,强化了晶界的结合能力,使复合材料的综合力学性能得到了更大程度的改善,其中抗弯强度和硬度最多提高了48%和41%.
参考文献
| [1] | Matsui K;Yamakawa T;Uehara M;Enomoto N;Hojo J .Sintering mechanism of fine zirconia powders with alumina added by powder mixing and chemical processes[J].Journal of Materials Science,2008(8):2745-2753. |
| [2] | Haitao Yang;Fuliang Shang;Ling Gao .Microstructure and mechanical properties of gas pressure sintered Al_2O_3/TiCN composite[J].CERAMICS INTERNATIONAL,2007(8):1521-1524. |
| [3] | Vikas Somani;Samar Jyoti Kalita .Synthesis, Densification, and Phase Evolution Studies of Al_2O_3-Al_2TiO_5-TiO_2 Nanocomposites and Measurement of Their Electrical Properties[J].Journal of the American Ceramic Society,2007(8):2372-2378. |
| [4] | Deng J X;Cao T K;Liu L L .[J].Journal of the European Ceramic Society,2005,25(07):1073-1079. |
| [5] | Wuchina E;Opeka M;Causey S;Buesking K;Spain J;Cull A;Routbort J;Guitierrez-Mora F .Designing for ultrahigh-temperature applications: The mechanical and thermal properties of HfB2, HfCx, HfNx, and alpha Hf(N)[J].Journal of Materials Science,2004(19):5939-5949. |
| [6] | Opeka MM;Talmy IG;Zaykoski JA .Oxidation-based materials selection for 2000 degrees C plus hypersonic aerosurfaces: Theoretical considerations and historical experience[J].Journal of Materials Science,2004(19):5887-5904. |
| [7] | DengJ X;Ai X;Li Z Q .[J].Wear,1996,195(1-2):128-132. |
| [8] | Taek-Soo Kim;Takashi Goto;Byong-Taek Lee .Microstructure Control and Mechanical Properties of Fibrous Al_2O_3/ZrO_2 Composites Fabricated by Extrusion Process[J].Scripta materialia,2005(8):725-729. |
| [9] | Han J K;Saito F;Lee B T .[J].Materials Letters,2004,58(16):2181-2185. |
| [10] | Liu C X;Zhang J H;Zhang X H et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2006,426(1-2):31-35. |
| [11] | Lee B T;Sarkar S K;Song H Y .[J].Journal of the European Ceramic Society,2008,28(01):229-233. |
| [12] | Chen C P;Gao J X;Yang H Z et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2008,477(1-2):379-385. |
| [13] | Ma W M;Wen L;Guan R G et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2008,477(1-2):100-106. |
| [14] | Monteverde F;Bellosi A;Guicciardi S .[J].Journal of the European Ceramic Society,2002,22(03):279-288. |
| [15] | Zhang G.J.;Deng Z.Y. .Reactive Hot Pressing of ZrB_2-SiC Composites[J].Journal of the American Ceramic Society,2000(9):2330-2332. |
| [16] | Hae-Won Kim;Young-Hag Koh .Densification and Mechanical Properties of B_4C with Al_2O_3 as a Sintering Aid[J].Journal of the American Ceramic Society,2000(11):2863-2865. |
| [17] | Sarkar D;Adak S;Mitra N K .[J].Composites Part A:Applied Science and Manufacturing,2007,38(01):124-131. |
| [18] | Riu D H;Kong Y M;Kim H E .[J].Journal of the European Ceramic Society,2000,20(10):1475-1481. |
| [19] | Rahaman M N.Ceramic Processing and Sintering[M].New York:crc Press,2003:721-774. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%