用三点弯曲实验和显微分析评价了在基体中添加纳米粉和晶粒长大抑制剂对制备纳米粉改性Ti(C,N)基金属陶瓷的力学性能和微观组织的影响.实验结果表明:基体中添加纳米粉含量为5wt%,单向冷模压制压力控制在110~150MPa,最高烧结温度的保温时间为10min时,烧结坯的抗弯强度(TRS)达到2112 MPa,洛氏硬度(HRA)为90;晶粒长大抑制剂(1wt%TaC+0.5wt%Cr3C2)能较好地抑制晶粒长大.
参考文献
[1] | Kim B K;Ha G H;Lee D W .Sintering and microstructure of nanophase WC/Co hardmetals[J].Journal of Materials Processing Technology,1997,63:317. |
[2] | Liu N;Xu Y D;Li H et al.Effect of nano-micro TiN addition on the the microtructure and mechanical properties of TiC based cermets[J].European Ceramic Society,2002,22:2409. |
[3] | Vaen R;Stver D .Processing and properties of nanophase ceramics[J].Journal of Materials Processing Technology,1999,92-93:77. |
[4] | Robert D.Carneim;Gary L.Messing .Response of granular powders to uniaxial loading and unloading[J].Powder Technology,2001(2):131-138. |
[5] | Chen I W;Wang X H .Sintering dense nanocrystalline ceramics without fine-stage grain growth[J].Nature,2000,404:168. |
[6] | 熊惟皓 .颗粒型复合硬质材料微观组织与界面结构的研究[D].华中理工大学,1994. |
[7] | Bernhard Wittmann;Wolf-Dieter Schubert;Benno Lux .WC grain growth and grain growth inhibition in nickel and iron binder hardmetals[J].International Journal of Refractory Metals & Hard Materials,2002(1):51-60. |
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%