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In light of the stringent application scenarios in nuclear power, such as those involving nuclear fuel cladding mentioned earlier, the key cost challenges associated with cold spray Cr coating technology are as follows: High cost of the carrier gas: To ensure efficient deposition of Cr powder and high density of the coating, helium is often used as a propellant gas. Helium is expensive and requires large quantities, making it a major component of the operating costs. Even when gas recovery methods are employed, efficiency issues can still increase the overall costs. High costs for equipment and related components: High-pressure cold spraying equipment designed for nuclear-grade, high-performance Cr coatings is expensive in itself; in addition, specialized accessories such as cooling systems, high-precision nozzles, and powder optimization devices are required, which further increases the initial cost of equipment procurement. Process optimization is costly: To meet the stringent requirements of zero defects in coatings used in the nuclear power sector, it is necessary to repeatedly optimize spraying parameters, carry out powder recovery and process validation. This leads to additional costs in terms of materials and time. Moreover, automated spraying of complex components also requires substantial investment in research, development, and testing. High costs for post-treatment and quality control: To address the issue of weak adhesion between the coating and the substrate, additional processes such as surface roughening and subsequent heat treatment are required; moreover, full-process non-destructive testing for nuclear-grade coatings also results in high quality control costs.