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2025 05 v.46 26-34
WC-304硬质合金在NaCl溶液中的腐蚀行为
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)
邮箱(Email): zhangzhanzhan00@163.com;
DOI: 10.13289/j.issn.1009-6264.2024-0298
中文作者单位:

湖南工业大学机械工程学院;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
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基本信息:

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

中图分类号:TG172

引用信息:

[1]李浩浩,张展展,吴科君等.WC-304硬质合金在NaCl溶液中的腐蚀行为[J].材料热处理学报,2025,46(05):26-34.DOI:10.13289/j.issn.1009-6264.2024-0298.

基金信息:

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

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