Research status and application of laser cladding technology for Cobalt-based
alloy
ZHOU Liangdong1，ZHANG Liang2，WU Wenheng2
（ 1. School of Resources and Environmental Engineering，Shanghai Polytechnic University，Shanghai 201209，Chi‐
na; 2. Shanghai Engineering Research Center of 3D Printing Materials，Shanghai Research Institute of Materials，
Shanghai 200437，China）
Abstract：Cobalt-based alloy is a common surface modification material, because of its excellent properties of
wear resistance, corrosion resistance and high temperature resistance, it has a wide application prospect in the
fields of surface modification and remanufacturing of aerospace, energy, heavy industry and marine equipment. La‐
ser cladding is a new surface engineering technology with high economic benefit, which can realize the rapid and
high quality molding of material surface coating. Using laser cladding technology, high performance alloy coating
can be prepared on the surface of cheap metal matrix materials, which can improve the surface properties of materi‐
als without affecting the properties of the matrix materials, and can save precious and rare metals and reduce the
cost. In recent decades, laser cladding technology of cobalt-based alloy has been widely concerned by scholars at
home and abroad, and many achievements have been made in the improvement of coating hardness, wear resis‐
tance and corrosion resistance, crack sensitivity and other properties. In this paper, the research status of laser clad‐
ding technology on cobalt-based alloy was reviewed, and the research status at home and abroad was summarized
and analyzed from the aspects of material system, process parameters and industrial application. The shortcomings of current research were summarized and the potential development direction in the future was analyzed.
2023, Vol. 33 
