擴(kuò)散路徑分析模型及其在鎳基合金高溫水氧化研究中的應(yīng)用
發(fā)布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時間：2016-06-27
針對Inconel 600和Inconel 690合金在高溫高壓水環(huán)境中生成的腐蝕氧化膜, 提出了擴(kuò)散路徑分析模型, 闡明了氧化膜微觀結(jié)構(gòu)及其形成機(jī)理。基于氧化膜成分、合金成分、以及環(huán)境因素, 構(gòu)建了Inconel 600及Inconel 690合金的Ni-Cr-H2O三元相圖。Inconel 600合金高溫高壓水腐蝕的擴(kuò)散路徑表明, 其氧化膜由內(nèi)層Cr2O3與外層FeCr2O4尖晶石構(gòu)成。通過Inconel 690合金高溫高壓水腐蝕的擴(kuò)散路徑分析可知, 氧化膜由單一的Cr2O3構(gòu)成。
擴(kuò)散路徑分析模型及其在鎳基合金高溫水氧化研究中的應(yīng)用Diffusion Path Analysis Model and Its Application to the Oxidation of Nickel-based Alloys in High Temperature Water針對Inconel 600和Inconel 690合金在高溫高壓水環(huán)境中生成的腐蝕氧化膜, 提出了擴(kuò)散路徑分析模型, 闡明了氧化膜微觀結(jié)構(gòu)及其形成機(jī)理。基于氧化膜成分、合金成分、以及環(huán)境因素, 構(gòu)建了Inconel 600及Inconel 690合金的Ni-Cr-H2O三元相圖。Inconel 600合金高溫高壓水腐蝕的擴(kuò)散路徑表明, 其氧化膜由內(nèi)層Cr2O3與外層FeCr2O4尖晶石構(gòu)成。通過Inconel 690合金高溫高壓水腐蝕的擴(kuò)散路徑分析可知, 氧化膜由單一的Cr2O3構(gòu)成。擴(kuò)散路徑分析結(jié)果表明, 在Inconel 600氧化膜中, O2-比Cr3+具有更高的擴(kuò)散速率, 而在Inconel 690氧化膜中, O2-的遷移率較低, 所受阻力較大, 從而使得Inconel 600和Inconel 690合金氧化膜呈現(xiàn)出不同的微觀結(jié)構(gòu)。
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.
作為值得信賴的合作伙伴和高品質(zhì)金屬合金的半成品供應(yīng)商，艾荔艾擁有完善的服務(wù)體系和專業(yè)的團(tuán)隊。在同客戶交易的過程中，我們力求根據(jù)不同的應(yīng)用需求將我們的產(chǎn)品做到精益求精。針對當(dāng)前和未來的市場需求，艾荔艾致力于為客戶提供最佳的金屬材料解決方案。
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.
獲取更多我們供應(yīng)的合金和服務(wù)信息，請致電086-021-67660801或發(fā)電子郵件kefu@ailiaigroup.com聯(lián)系我們，您也可以通過微博，微信，領(lǐng)英，XING，臉書和推特與我們互動。
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.