Laser Fabricated In Situ (Ti,W)C Multi-Ceramics Reinforced Intermetallic Matrix Composite
Using laser cladding technique, Ni3(Si Ti) matrix composite coatings reinforced by in-situ synthesis (Ti,W)C multi-ceramics were fabricatcd by preplacing Ni78Si13Ti9( at%)powders containing different WC contents on the nickel-matrix superalloy substrate. The phases of coatings were investigated by scanning electron microscopy (SEM), X-ray diffractometer (XRD) and electron probe microanalysis (EPMA). Phases of the coatings mainly composed of Ni3(Si Ti), (Ti,W)C multi-ceramics A chemical reaction between WC particle and Ti powder occurs during the laser process, therefore (Ti,W)C was formed.
Zhengyi Jiang, Xianghua Liu and Jinglong Bu
Y. N. Sun et al., "Laser Fabricated In Situ (Ti,W)C Multi-Ceramics Reinforced Intermetallic Matrix Composite", Advanced Materials Research, Vols. 154-155, pp. 929-932, 2011