扩散路径分析模型及其在镍基合金高温水氧化研究中的应用
发布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新时间：2016-06-27
针对Inconel 600和Inconel 690合金在高温高压水环境中生成的腐蚀氧化膜, 提出了扩散路径分析模型, 阐明了氧化膜微观结构及其形成机理。基于氧化膜成分、合金成分、以及环境因素, 构建了Inconel 600及Inconel 690合金的Ni-Cr-H2O三元相图。Inconel 600合金高温高压水腐蚀的扩散路径表明, 其氧化膜由内层Cr2O3与外层FeCr2O4尖晶石构成。通过Inconel 690合金高温高压水腐蚀的扩散路径分析可知, 氧化膜由单一的Cr2O3构成。
扩散路径分析模型及其在镍基合金高温水氧化研究中的应用Diffusion Path Analysis Model and Its Application to the Oxidation of Nickel-based Alloys in High Temperature Water针对Inconel 600和Inconel 690合金在高温高压水环境中生成的腐蚀氧化膜, 提出了扩散路径分析模型, 阐明了氧化膜微观结构及其形成机理。基于氧化膜成分、合金成分、以及环境因素, 构建了Inconel 600及Inconel 690合金的Ni-Cr-H2O三元相图。Inconel 600合金高温高压水腐蚀的扩散路径表明, 其氧化膜由内层Cr2O3与外层FeCr2O4尖晶石构成。通过Inconel 690合金高温高压水腐蚀的扩散路径分析可知, 氧化膜由单一的Cr2O3构成。扩散路径分析结果表明, 在Inconel 600氧化膜中, O2-比Cr3+具有更高的扩散速率, 而在Inconel 690氧化膜中, O2-的迁移率较低, 所受阻力较大, 从而使得Inconel 600和Inconel 690合金氧化膜呈现出不同的微观结构。
A model of diffusion path analysis (DPA) was proposed to describe the microstructure and formation mechanism of oxide films on Inconel 600 and Inconel 690 in high-temperature and high-pressure water. First, a Ni-Cr-H2O ternary phase diagram was plotted according to the known composition of the alloys and oxide films, along with the environment factors. The diffusion path describing the oxidation of Inconel 600 in high-temperature and high-pressure water indicated that the surface films consisted of Cr2O3 inner layer and FeCr2O4 outer layer. According to the DPA for Inconel 690, the surface film was composed of Cr2O3 entirely. The diffusivity of O2- was higher than that of Cr3+ in surface films on Inconel 600. The Cr2O3 film formed on Inconel 690 had a higher resistance to the transportation of oxygen through the film, and thus the mobility of oxygen was low. As a consequence, the surface films formed on Inconel 600 and Inconel 690 exhibited different microstructures.
作为值得信赖的合作伙伴和高品质金属合金的半成品供应商，艾荔艾拥有完善的服务体系和专业的团队。在同客户交易的过程中，我们力求根据不同的应用需求将我们的产品做到精益求精。针对当前和未来的市场需求，艾荔艾致力于为客户提供最佳的金属材料解决方案。
AILIAI has been a reliable partner and supplier of sophisticated and high-quality semi-finished products maed of alloys. In dialogue with our customers, we optimise our products to meet the specific application requirements. AILIAI develops the best alloy material solutions for current and future challenges.
获取更多我们供应的合金和服务信息，请致电086-021-67660801或发电子邮件kefu@ailiaigroup.com联系我们，您也可以通过微博，微信，领英，XING，脸书和推特与我们互动。
For more information on the alloys and services that we supply, call us at 086-021-67660801 or email us at kefu@ailiaigroup.com. You can also get in touch on social media, we are constantly active on Weibo, Weixin, LinkedIn, XING, Facebook and Twitter.