摘要
研究了不同含量的碳纳米管及0.8%稀土Y对高Ni含量Ti（C,N）基金属陶瓷组织性能的影响。将不同成分的试样分别于1400℃、1410℃、1420℃真空烧结,测试抗弯强度、洛氏硬度,观察背散射电子形貌、断口形貌并做能谱分析。结果表明,加入质量分数（下同）为0.8%Y及0.3%~1.0%的碳纳米管时,碳纳米管含量为0.5%的组织较均匀,芯壳结构明显,抗弯强度及硬度均较高。
The effects of carbon nano-tubes（CNTs） and rare-earth element Y on the microstructure and mechanical properties of Ti （C, N）-based cermets with high Ni content were studied. The specimens with 0.8% （mass fraction ,the same below） Y and different contents of CNTs （0.3% ～ 1.0% ） adding into Ti（ C ,N） -based cermets were fabricated by conventional powder metallurgy and vacuum sintered at 1400 ℃, 1410 ℃ ,and 1420 ℃ individually. The microstructure and fracture morphology were investigated by SEM, and the mechanical properties such as bend strength and hardness were measured. The results show that the microstructure is uniform with obvious core/rim structure, and the integrated properties of bend strength and hardness are the best when the content of Y is 0.8 % and the content of CNTs is 0.5%.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2007年第7期12-15,共4页
Heat Treatment of Metals
基金
国家自然科学基金(50074017)
湖北省自然科学基金(2006ABA189)
关键词
碳纳米管
稀土Y
TI(C
N)基金属陶瓷
组织与性能
carbon nano-tubes （CNTs）
rare-earth element Y
Ti （ C, N ） -based cermets
microstructure and properties
