Characterization of FeP-based metallic glass coatings prepared with laser cladding
Characterization of FeP-based metallic glass coatings prepared with laser cladding
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DOI：
10.1016/j.surfcoat.2020.126733
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发表时间：
2021-01
影响因子：
5.4
通讯作者：
A. Małachowska;G. Paczkowski;T. Lampke;A. Ambroziak
中科院分区：
文献类型：
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作者：
A. Małachowska;G. Paczkowski;T. Lampke;A. Ambroziak
铁基金属玻璃具有机械强度高、耐腐蚀性好、价格合理的特点，但由于延展性有限，在激光熔覆等热加工过程中经常出现裂纹。当沉积多个珠子时，这个问题尤其明显。因此，选择了一种具有更高延展性的合金进行测试，以检查它是否可以促进无缺陷涂层的熔覆。将该合金气雾化，然后筛分至所需的分数。然后用激光熔覆沉积涂层。所得涂层结晶充分，显微结构从树枝状到球状，磷和钼强烈偏析。
Fe-based metallic glasses are distinguished by high mechanical strength, good corrosion resistance and reasonable price, but due to limited ductility cracks often appear during thermal processing like laser cladding. This problem is especially visible when several beads are deposited. Therefore, an alloy with increased ductility was selected for tests to check if it can facilitate cladding of defect-free coatings. The alloy was gas atomized and then sieved to desired fraction. The coatings were then deposited with laser cladding. The obtained coatings were fully crystallized with microstructure varied from dendritic to globular one and strong segregation of the phosphorous and molybdenum.