电场作用下电流大小对Fe-V-C体系燃烧合成的影响  

Effect of Electric Current Magnitude on Combustion Synthesis of Fe-V-C System Based on Action of Electric Field

作　　者：冯可芹[1] 白晨光[1] 王文娟[2] 杨屹[2] 阚细武[2] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]四川大学制造科学与工程学院,四川成都610065

出　　处：《四川大学学报（工程科学版）》2007年第3期91-95,共5页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金资助项目(50404014);中国博士后科学基金资助项目(20060390177)

摘　　要：采用G leeb le-1500D热模拟机,探讨电场下电流大小(1.0×104-2.3×104A)对Fe-V-C体系燃烧合成的影响。结果表明,在电场作用下,采用此体系可以在较低温度(632-740℃)下燃烧合成VC/Fe复合材料,其硬度为60-67 HRC。随电流增大,体系点火温度降低,点火延迟时间缩短,试样的致密性提高,硬度提高。在1.0×104-1.6×104A电流范围内,产物颗粒尺寸相差不大;在1.6×104-2.3×104A电流范围内,随电流增大,产物颗粒变大。Using the thermal simulation instrument Gleeble- 1500D, the effect of electric current magnitude （1.0 × 10^4 -2.3 × 10^4 A） on the combustion synthesis of Fe - V - C system was studied. It was shown that with the action of electric field, VC/Fe composite with hardness about 60 - 67 HRC can be obtained at rather low temperature （632 - 740 ℃ ）. With the increasing of electric current, the ignition temperature becomes lower, the ignition delay time becomes shorter, the densification and the hardness of samples increase, the particle size in the sample does not change considerably in the range of 1.0 × 10^4 - 1.6 × 10^4 A but increases in the range of 1.6× 10^4 - 2.3 × 10^4 A.

关 键 词：Fe—V—C体系 燃烧合成 电场 复合材料 

分 类 号：Q78[生物学—分子生物学]