摘要
采用粉末冶金法制备La2O3和TiC协同增强钨基复合材料,研究La2O3-TiC/W复合材料的室温力学性能。结果表明:与纯钨相比,La2O3和TiC显著提高材料的硬度、弹性模量、抗弯强度和断裂韧性;La2O3-TiC/W复合材料抗弯强度在TiC的质量分数为5%时出现最大值898MPa,断裂韧性在TiC的质量分数为10%时出现最大值10.07MPa.m1/2。质量分数为1%的La2O3与质量分数为5%的TiC协同作用时,La2O3-TiC/W复合材料具有较好的综合力学性能。
The tungsten-based composites,co-strengthened by 1wt%La2O3 and TiC were prepared by powder metallurgy method.The mechanical properties at room temperature and strengthening and toughening mechanisms of La2O3-TiC/W were investigated.The results show that co-addition of La2O3 and TiC improves hardness,elastic modulus,flexural strength and fracture toughness compared with pure tungsten.The flexural strength of La2O3-TiC/W has a maximum of 898MPa with 5wt%TiC,and fracture toughness has a maximum of 10.07MPa·m^1/2 with 10wt%TiC.The La2O3-TiC/W composite has optimal mechanical properties with addition of 1wt%La2O3 and 5wt%TiC.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2008年第1期47-50,共4页
Ordnance Material Science and Engineering
基金
合肥工业大学中青年创新群体基金资助项目(103-037016)
中科院等离子体物理研究所合作项目(103-413361)
