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A100钢表面粗糙度与HVOF碳化钨涂层结合强度

, PP. 937-942

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Abstract:

采用超音速火焰喷涂方法在AerMet100钢(A100钢)基体上制备了WC10Co4Cr涂层,研究了不同喷砂条件对AerMet100钢表面粗糙度变化及对涂层与基体结合强度的影响.之后将涂层使用化学方法退除,观察涂层制备对AerMet100钢基体表面状态的影响,分析了粗糙度与涂层结合强度之间的关系.结果表明AerMet100钢基体不同吹砂工艺产生的表面粗糙度Sa=0.994~4.983μm时,超音速火焰喷涂WC10Co4Cr涂层的结合强度均不低于72MPa.喷涂涂层过程对基体表面状态没有较大影响基体粗糙度Sa3μm时,喷涂后,基体粗糙度略有升高.超音速火焰喷涂的碳化钨钴涂层与AerMet100钢基体的结合同时存在物理与机械力结合,以前者为主要结合力.

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