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研究了１３Ｎｉ５Ａ钢铆钉头部Ｎｉ－Ｃｒ－Ｂ－Ｓｉ合金激光熔覆层的组织、成分、显微硬度和在酸性介质中的抗腐蚀能力，并进行了实地考验．结果表明，采用激光功率密度为１．３×１０４Ｗ／ｃｍ２、扫描速度为５ｍｍ／ｓ的辐照工艺，获得了与基体呈冶金结合的无裂纹的熔覆涂层，其组织由Ｎｉ－Ｃｒ－Ｆｅ固溶体、Ｎｉ３Ｓｉ、Ｃｒ５Ｂ５及ＷＣ等相组成，显微硬度高出基体两倍多，并在酸性介质中具有优异的抗蚀性能．激光熔覆处理的铆钉经３７００ｈ实际生产考验后．明显优于未经．处理的铆钉．
The microstructure, composition, microhardness and corrosion resistance of Ni-Cr-B-Si alloy laser cladding layer on the head of 13Ni5A steel rivets were studied and tested in the field. The results show that the clad-free coating with metallurgical bond with the matrix was obtained by the irradiation process with a laser power density of 1.3 × 10 4 W / cm 2 and a scanning speed of 5 mm / s. The microstructure was composed of Ni-Cr- Fe solid solution, Ni3Si, Cr5B5 and WC phase composition, the micro-hardness higher than the matrix more than twice, and in acidic medium has excellent corrosion resistance. Laser cladding rivets after 3700h actual production test. Obviously better than without. Handle the rivet.