摘要
研究了用连续２ｋｗＣＯ２激光器对在１Ｃｒ１８Ｎｉ９Ｔｉ上热喷涂Ａｌ２Ｏ３－１３％ＴｉＯ２陶瓷层的激光重熔过程。重熔后，热喷涂陶瓷层变得致密，且孔隙率减小；陶瓷层几乎不熔于金属；底层合金完全熔入基体金属中；各元素分布沿截面连续变化，陶瓷层中相分布是不均匀的，其中Ａｌ２ＴｉＯ２在晶界处析出。
Thermal sprayed A12O3-13%TiO2 coatings on a stainless steel 1Cr18Ni9Ti were remelted by a CW, 2kW, CO2 laser in this study. After remelting, the thermal sprayed ceramic coatings was densified and the porosity was sealed 3 the ceramics are hardly solvable in metal, and bond layer metal is solvable in substrate completely; all elements distributions of the cross-section are varying continuously and the phase distribution in ceramic coatings is heterogeneous. Al2TiO5 is segregated at grain boundaries.
出处
《机械工程材料》
CAS
CSCD
1995年第4期25-28,共4页
Materials For Mechanical Engineering
基金
863课题
