The current investigation aimed to study the cavitation erosion performance of the microwave synthesized NiCrSiC-5Al₂O₃ composite clad with a 900 W power multimode domestic microwave applicator of 2.45 GHz frequency. The clads were deposited on the austenitic grade stainless steel, namely AISI-316. The as-deposited composite clad’s microstructure, crystal structure, porosity, microhardness, and flexural strength were examined. Cavitation erosion study was done using the vibratory cavitation method at varying standoff distance (SOD)-(0.5 mm, 1 mm, 1.5 mm) and vibration amplitude (AMP)-(40 μm, 50 μm, 60 μm), keeping other parameters constant. The results had shown that the deposited NiCrSiC-5Al₂O₃ composite clad exhibited 1.20% porosity, 489.1647.95 HV_0.3 microhardness, 264.914.5 MPa flexural strength, and performed 3.5 times much better than the AISI-316 in terms of cavitation resistance. The least weight loss occurred at 1.5 mm SOD and 40 μm AMP, where the highest weight loss was observed at 0.5 mm SOD and 60 μm AMP. The erosion mechanism of the NiCrSiC-5Al₂O₃ composite clad surface was observed as plastic deformation followed by surface fatigue; the clad surface was eroded in the form of pits, craters, impingement marks, secondary cracks, and plastically deformed lips.

目前的调查旨在研究微波合成NiCrSiC-5Al ₂ O ₃复合包层与900 W功率多模家用2.45 GHz频率微波施加器的空化侵蚀性能。包层沉积在奥氏体级不锈钢上，即 AISI-316。检查了沉积态复合包层的微观结构、晶体结构、孔隙率、显微硬度和弯曲强度。使用振动空化方法在不同的间隔距离 (SOD)-(0.5 mm, 1 mm, 1.5 mm) 和振动幅度 (AMP)-(40 μ m, 50 μ m, 60 μ m)下进行空蚀研究，保持其他参数不变。结果表明，沉积的 NiCrSiC-5Al ₂O ₃复合包层的孔隙率为 1.20%，显微硬度为489.1647.95 HV _0.3，弯曲强度为 264.914.5 MPa，在抗气蚀性方面比 AISI-316 好 3.5 倍。所述至少重量损失发生在1.5mm SOD和40 μ中号AMP，其中以0.5mm SOD是观察到的最高重量损失和60 μ中号AMP。NiCrSiC-5Al ₂ O ₃复合包层表面的侵蚀机理为塑性变形和表面疲劳；包层表面以凹坑、陨石坑、撞击痕迹、二次裂纹和塑性变形的唇缘的形式受到侵蚀。