熱處理制度對含Yb航空鋁合金電化學(xué)腐蝕行為的影響
發(fā)布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時間：2016-04-01
采用開路電位-時間曲線以及循環(huán)極化曲線研究了不同時效制度對Al-6.2Zn-2.3Mg-2.3Cu-0.16Zr-0.18Cr-0.3Yb合金(質(zhì)量分?jǐn)?shù)，%)在10 mmol/L NaCl+0.1mol/L Na2SO4溶液中的電化學(xué)腐蝕性能的影響。
熱處理制度對含Yb航空鋁合金電化學(xué)腐蝕行為的影響Influence of heat treatments on electrochemical corrosionbehaviours of aircraft Al alloy with Yb micro-alloy采用開路電位-時間曲線以及循環(huán)極化曲線研究了不同時效制度對Al-6.2Zn-2.3Mg-2.3Cu-0.16Zr-0.18Cr-0.3Yb合金(質(zhì)量分?jǐn)?shù)，%)在10 mmol/L NaCl+0.1mol/L Na2SO4溶液中的電化學(xué)腐蝕性能的影響。結(jié)果表明：不同時效耐局部腐蝕與應(yīng)力腐蝕的能力由強至弱的順序依次為T76+T6、T77、T76、T6。結(jié)合硬度和電導(dǎo)率測試發(fā)現(xiàn)，與常規(guī)T77相比，過時效再時效T76+T6處理的鋁合金同時具備更優(yōu)異的耐蝕和強度性能。并系統(tǒng)討論了點蝕電位(φpit)、自腐蝕電位(φcorr)、再鈍化電位(φrep)以及電位差值(φrep-φcorr，φpit-φcorr，φpit-φrep)作為腐蝕判據(jù)的可行性和局限性。
The effects of heat treatments on electrochemical corrosion behaviours of Al-6.2Zn-2.3Mg-2.3Cu-0.16Zr- 0.18Cr-0.3Yb alloy (mass fraction, %) in 10 mmol/L NaCl + 0.1mol/L Na2SO4?solution were investigated by open circuit potential and cyclic polarization curve. The results show that the localized corrosion and stress cracking corrosion resistance of various alloys with different ageing processes is in the following order: T76+T6>T77≈T76>T6. Together with the results of hardness and conductivity characterization, it can be found that, compared to those of the conventional T77 ageing, the novel three-step ageing T76+T6 shows the combination of better corrosion resistance and higher strength property. In addition, the suitability and limitations of using pitting potential (φpit), corrosion potential (φcorr), repassivation potential (φrep) and potential differences (φrep-φcorr, φpit-φcorr, φpit-φrep) as the corrosion criteria were discussed in detail.
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[email protected]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 [email protected]. You can also get in touch on social media, we are constantly active on?Weibo,?Weixin,?LinkedIn,?XING, Facebook?and?Twitter.