李浩浩,张展展,吴科君,冯继宇,葛敏

• 1:湖南工业大学机械工程学院
• 2:中南大学机电工程学院

摘要(Abstract)：

采用真空烧结技术制备了WC-304硬质合金。采用电化学腐蚀法分析了WC-304硬质合金在NaCl溶液中的腐蚀行为，并对合金的物相组成、开路电位、极化曲线、阻抗谱以及表面形貌进行了测定和分析。结果表明：添加304不锈钢粉末可以提高WC硬质合金的耐腐蚀性能，当304不锈钢粉末添加量为15 mass%时，硬质合金的耐腐蚀性能最好；WC-304硬质合金中的粘结相会在腐蚀初期优先腐蚀形成氧化膜，Cr会增强氧化膜的稳定性以及氧化膜和基体间的结合度，从而提高合金的耐腐蚀性；当304不锈钢粉末含量超过15 mass%时，由于整个合金中Fe、Ni成分占比不断增加，Ni与Fe会形成原电池，大大加快整体的腐蚀速率从而降低合金的耐腐蚀性。

关键词(KeyWords)： 硬质合金;电化学腐蚀;腐蚀行为;304不锈钢

Abstract:

Keywords:

基金项目(Foundation): 湖南省自然科学基金(2024JJ7150);; 湖南省教育厅科学研究项目(23B0567)

作者(Author): 李浩浩,张展展,吴科君,冯继宇,葛敏

DOI: 10.13289/j.issn.1009-6264.2024-0298

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