Si对低铬白口铸铁在含Cu2+离子介质中腐蚀磨损特性的影响

采用三体腐蚀磨损试验方法研究了硅对低铬白口铸铁在含铜离子浆料介质中的腐蚀磨损耐磨性的影响。结果表明，当浆料介质中铜离子浓度增加时，低铬白口铸铁的腐蚀磨损耐磨性降低。而增加含硅量后的低铬白口铸铁的腐蚀磨损耐磨性将比普通白口铸铁的高。磨损表面形貌分析表明，普通低铬白口铸铁的磨损机制为磨料磨损和介质腐蚀，而硅量增加的低铬白口铸铁的磨损机制则以磨料磨损为主，伴随着腐蚀作用。

Effect of Si Element on Corrosion Wear Behavior of Low Chromium Cast Iron in Slurry with Cu2+ ion

The effect of Si content on the corrosion wear resistance of low chromium white cast iron in the slurry with Cu2+ ion was studied by three-body corrosion wear test.The results show that the corrosion wear resistance of low chromium white cast iron decreases with the increase of Cu2+ ion concentration in slurry.The corrosion wear resistance of low chromium white cast iron increases when the silicon content increases in it.The analysis of wear surface show that the wear mechanism of low chromium white cast iron is dominated by both of abrasive wear and corrosion,but it is dominated by abrasive wear companied corrosion when the silicon in low chromium white cast iron increases.