  As one of the important methods for surface modification of materials and
life extension of key components, cemented carbide brazing coatings are widely
used in agricultural machinery, oil drilling, aerospace and other fields, it
has also attracted the attention of scholars in the field of surface
modification at home and abroad. Based on the research reports of recent 20
years at home and abroad, the present research situation of cemented carbide
brazed coating additive manufacturing technology are reviewed firstly. The
research progress in preparation and performance control of cemented
carbide/iron-base, cemented carbide/copper-base, cemented carbide/nickel-base,
cemented carbide/silver-base heterogeneous brazing coatings are reviewed in
detail. Then the practical applications of cemented carbide heterogenous
brazing coatings in the fields of contact soil agricultural machinery parts
life extension, aviation parts repair, surface function strengthening and so on
are reviewed. In this review, the limitation of the research of cemented
carbide heterogenous braze coating technology is discussed. The deficiencies in
the research and development of cemented carbide heterogenous braze coating
technology are summarized including cemented carbide heterogeneous additive
materials and technology need to be expanded, the structure of cemented carbide
heterogeneous brazing coatings need to be optimized, the mechanism of interface
defects in cemented carbide heterogeneous brazing coatings need to be
clarified. Finally, the future development direction of braze coating
technology is prospected, too.
