以TiC和B4C为原料反应生成TiB2,原位合成了TiB2含量为20%的ZrO2/TiB2复合陶瓷材料.分析了烧结工艺中烧结温度、保温时间和烧结压力对力学性能的影响.结果表明:当烧结温度由1650℃提高到1750℃时,复合陶瓷材料的抗弯强度由820 MPa增加到980 MPa,断裂韧性从7.2 MPa·m1/2提高到9.4 MPa·m12;当烧结温度升至1850℃时,抗弯强度和断裂韧性下降;显微硬度随烧结温度的升高而提高.在烧结温度1750℃压力为30MPa保温时间由30 min提高到45 min时,断裂韧性从8.6 MPa·m1/2提高到9.4 MPa·m1/2;保温时间增加至60 min时,断裂韧性下降;保温时间的变化对材料的抗弯强度、硬度影响不大.烧结压力对复合陶瓷材料的力学性能的影响较小.当烧结参数为1750℃、45 min、30MPa,ZrO2/TiB2复合陶瓷材料的抗弯强度、显微硬度、断裂韧性分别达到980 MPa、13.6 GPa、9.4 MPa·m1/2.
参考文献
[1] | 许海仙,丘泰,杨建,郭坚.混料方法对注凝成型超细氧化锆陶瓷的影响[J].人工晶体学报,2011(02):435-440. |
[2] | Hannink R.H.J.;Kelly P.M. .Transformation Toughening in Zirconia-Containing Ceramics[J].Journal of the American Ceramic Society,2000(3):461-487. |
[3] | Lu H;Chen S .Low-temperature Aging of T-ZrO2 Polycrystals with 3mol%Y2O3[J].Journal of the American Ceramic Society,1987,70:537-541. |
[4] | 孙静,黄传真,刘含莲,邹斌.TiN/3Y-TZP复合陶瓷材料的性能及显微结构研究[J].材料工程,2005(11):6-8,45. |
[5] | G. ANNE;S. PUT;K. VANMEENSEL .Hard, tough and strong ZrO_2-WC composites from nanosized powders[J].Journal of the European Ceramic Society,2005(1):55-63. |
[6] | C. Santos;L.D. Maeda;C.A.A. Cairo .Mechanical properties of hot-pressed ZrO_2-NbC ceramic composites[J].International Journal of Refractory Metals & Hard Materials,2008(1):14-18. |
[7] | Basu B;Vlengels J;Van der Biest O .Processing and Mechanical Properties of ZrO2-TiB2 Composites[J].Journal of the European Ceramic Society,2005,25:3629-3637. |
[8] | Basu B .Microstructure and Mechanical Properties of ZrO2-TiB2 Composites[J].Journal of Materials Science,2004,39:6389-6392. |
[9] | Vleugels Jef .Development and Characterization of Y_2O_3-Stabilized ZrO_2 (Y-TZP) Composites with TiB_2, TiN, TiC, and TiC_0.5N_0.5[J].Journal of the American Chemical Society,1999(10):2717-2720. |
[10] | 叶大伦;胡建华.实用无机物热力学数据手册[M].北京:冶金工业出版社,2002:1-1055. |
[11] | Kim DJ.;Cho DH.;Jung HJ. .PHASE TRANSFORMATIONS OF Y2O3 AND NB2O5 DOPED TETRAGONAL ZIRCONIA DURING LOW TEMPERATURE AGING IN AIR[J].Solid state ionics,1995(1/2):67-73. |
[12] | 周玉;雷廷权.陶瓷材料学[M].哈尔滨:哈尔滨工业大学出版社,1995 |
[13] | 宋桂明,吴士平,吴洪飞,周玉.加压烧结工艺对碳纤维增强TiC复合材料力学性能的影响[J].粉末冶金技术,2001(06):323-326. |
[14] | 唐军;谭寿洪;陈忠明 等.原位生成TiB2颗粒增韧B4C陶瓷的研究[J].粉末冶金技术,1996,14(03):168-174. |
[15] | 许崇海,黄传真,李兆前,艾兴.含碳添加剂Al2O3基陶瓷复合材料的增韧机理[J].无机材料学报,2001(02):256-261. |
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%