Microstructure, microhardness and wear resistance of VCp/Fe surface composites fabricated in situ

Fabrication and dynamics of two layers vanadium carbide reinforced iron matrix surface composite

“…By prolonging heat treatment time from 30 min to 240 min, the intensities of the diffraction peaks corresponding to metallic vanadium decrease along with increasing the intensities of the diffraction peaks of V8C7 and V2C. The author's previous work [7] shows that layer Ⅰ and layer Ⅱ are V2C layer and V8C7 dense layer, respectively. To obtain more information on the layer Ⅰ and layer Ⅱ in the composite, the specimen by incubation at 1223 K for 240 min were examined.…”

Kinetics of niobium carbide reinforced composite coating produced in situ

“…The chemical compositions of HT300 and niobium plate are given in Table 1, using a spectrum analyzer (EXF9600) with standard deviation of ±0.001%~0.1%. The ISS process was performed in two sections [10]: (1) casting, and (2) subsequent heat treatment. Firstly, a niobium plate was ultrasonically cleaned in acetone for 15 min before being placed at the bottom of an alumina mold with the shape of 10 Â 5 Â 10 mm.…”

“…However, while some of these techniques may achieve good results, distinct disadvantages, such as high costs, complex equipment, operational difficulties, or limitation of the coating thickness (d) [2,9], have also been observed; these disadvantages greatly restrict the wider industrial application of these coatings. Recent developments in the ISS technique have indicated that this approach is inexpensive and offers fine ceramic grains, strong interfacial bonding between the substrate and reinforcement phase, and excellent mechanical properties [10].…”

Formation of VC-composite surface layer on high C–Cr bearing tool steel by laser surface cladding

“…Besides, when VC is used in high temperatures, it is oxidized to V 2 O 5 , which are characterized by self-lubrication performance [26,27]. This advantageous combination can create a protective coating layer on the surface of the composite material with enhanced resistance against thermal, corrosion and mechanical wear [28,29].…”