WC-(7-9)Ni-(1-2)Cr硬质合金耐蚀性能的研究

以采用Ni、Cr做粘结相的碳化钨基硬质合金为研究对象,采用失重法、电化学测试方法,研究合金在室温和60℃下,在体积浓度10%稀硫酸、10%稀盐酸、10%稀硝酸溶液中的腐蚀行为,并与传统的WC-8Co,WC-13Co硬质合金进行比较。试验结果表明:在浸泡腐蚀试验和电化学试验中,WC-Ni-Cr合金的耐腐蚀能力明显优于传统的WC-Co类合金,具有较强的抗腐蚀能力,可应用作矿砂、钢渣的提炼、污水处理领域的耐磨耐腐蚀材料,有很好的应用前景。

WC-(7-9)Ni-(1-2)Cr Hard Alloy Anticorrosion Performance Research

By taking the hard alloy with Ni, Cr binder phase as the research object, the corrosion behaviors of the alloy in room temperature and at 60℃ in 10% （by volume, hereinafter the same） sulphuric acid, 10% hydrochloric acid and 10% nitric acid solution were studied and compared with that of the traditional WC-8Co and WC-13Co hard alloy. The results show that, in the immersing corrosion and electrochemical tests, the corrosion resistance of the WC-Ni-Cr alloy is significantly superior to that of the traditional WC-Co grades. The WC-Ni-Cr alloy has good application prospect in the wear and corrosion resistant material for metal ore and steel slag refining, sewage disposal, etc.