摘要
采用热等静压工艺,在1000℃、100 MPa条件下,选择混合粉末Al_3Ti+TiN+TiO_2和Al_3Ti+TiN,调整各粉末中不同成分的比例,找到性能合适的合金配比,利用XRD和扫描电镜研究压制后的样品的相组成和组织形貌。结果表明:粉末经热等静压后均可生成Ti_2AlN相,但是生成物相比例不同;其中Al_3Ti、TiN和TiO_2的质量比为2.07:1.68:1的粉末压制出来的样品是完整的Ti_2AlN基体,同时生成的Al_2O_3均匀弥散分布在基体中,对基体具有强化作用。
The bulk intermetallic-ceramic composites in Ti-Al-N system was fabricated by reactive hot isostatic pressing （hipping） of two kinds of powder mixtures TiAl3＋TiN＋TiO2 and TiAl3＋TiN at 1 000 ℃ and 100 MPa for different times. To find the best rate of components to fabricate the Ti2AlN, different rates in each kind of powders were operated. The chemical phase and microscopy was characterized by X-ray diffractometry and scanning electron microscopy. The results show that Ti2AlN and Al2O3 phases form in both two mixtures of powders, but the content of phase is different. TiAl3＋TiN＋TiO2 mixture is the better, which can make perfect base of Ti2AlN, sirnullaneity Al2O3 is formed, it disperses in the base homogeneously and strengthens the base metal.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2010年第B10期280-283,共4页
The Chinese Journal of Nonferrous Metals
