摘要
本文利用放电等离子烧结技术探讨了烧结温度和保温时间对40%Ti(体积分数)/Al2O3(体积分数)复合材料性能的影响。实验结果表明:复合材料的性能受烧结温度的影响最为显著,过度的延长保温时间会使晶粒发生异常长大,使得复合材料性能降低。烧结温度1 300℃,保温8 min,制备的复合材料力学性能最佳,其弯曲强度、断裂韧性、显微硬度和相对密度分别为1002.22 MPa、19.73 MPa.m1/2、18.14 GPa和99.74%。
The effect of holding time and heating-rate on properties of 40vol% Ti/Al_2O_3 composites was studied by spark plasma sintering.The results showed that sintering temperature has the most notable effect on properties of composites.The properties of composites can be greatly decreased by excessively prolonged holding time due to abnormal grains growth.The bending strength,fracture toughness,micro-hardness and relative density reached to 1002.22 MPa、19.73 MPa·m^(1/2)、18.14 GPa and 99.74% respectively when sint...
出处
《粉末冶金工业》
CAS
北大核心
2005年第5期24-28,共5页
Powder Metallurgy Industry
基金
国家自然基金重点资助项目(No.50232020)
山东省自然基金资助项目(No.2002F21)
