摘要
以钛粉、钒铁粉、碳粉、铬铁粉、钼铁粉和铁粉为原料,用原位烧结法制备了(Ti,V)C钢结硬质合金。利用XRD、SEM和EDS对相组成、组织结构和微区成分进行了分析。结果表明:最佳烧结时间是1h,(Ti,V)C钢结硬质合金的最佳烧结温度是1400℃,TiC的最佳烧结温度是1420℃。TiC/(Ti,V)C钢结硬质合金的主要相组成为TiC/(Ti,V)C、α-Fe、Fe3C、(Cr,Fe)7C3,与TiC硬质相颗粒相比,(Ti,V)C颗粒形态更加圆整。
（Ti, V）C steel bonded carbide was produced by in situ sintering technology from titanium powder, ferrovanadium powder, carbon powder, molybdenum-iron powder, errochromium powder and iron powder. The phases, microstructure and composition of the composites were studied by means of X-ray diffraction （XRD）, scanning electron microscopy （SEM） and energy dispersive spectrum（EDS）. The results show that the sintering temperature and sintering time significantly affects the densification of the alloys. The optimal sintering temperature for TiC, （Ti, V）C steel bonded carbide was 1420 ℃, 1400 ℃, respectively. The optimal sintering time was 1 hour. There was no residual carbon, titanium, vanadium and impurity phase such as TiFe2 in final products. The main phases were TiC/（Ti,V）C.α-Fe、Fe3C、 （Cr, Fe） 7 C3. Compared with TiC particles, the（Ti, V） C particles were more globular.
出处
《粉末冶金工业》
CAS
北大核心
2009年第3期30-35,共6页
Powder Metallurgy Industry
