【摘要】 利用强流脉冲电子束对不锈钢表面进行了快速钛合金化。将精细钛粉预涂在基体表面后采用强流脉冲电子束对其进行后处理。在电子束对表面的快速加热熔化、混合及增强扩散效应的作用下,部分钛熔入基体表层形成一层富钛层。由于钛的添加有利于形成α相,合金层由α相和γ相混合组成。在模拟体液中的动态极化测试表明,316L医用不锈钢经强流脉冲电子束表面钛合金化后,其在模拟体液中的耐腐蚀性能获得了显著的提高。更多还原

【Abstract】 The rapid surface alloying of AISI 316L stainless steel by high current pulsed electron beam(HCPEB) was investigated.A fine Ti powder layer was pre-coated on the substrate and then post-treated with HCPEB.Due to the rapid surface heating,melting,mixing and enhanced diffusion effects,part of the Ti coating was dissolved into the substrate,forming a Ti-rich layer on the top surface.Since the addition of Ti favors the formation of α phase,the alloyed layer contains a mixture of α and γ phases.Potentiodynamic tests in the simulated body fluid show that the corrosion resistance of AISI 316L stainless steel can be effectively improved after HCPEB surface alloying with Ti.更多还原