半固態(tài)與鑄態(tài)7A04鋁合金腐蝕行為的對(duì)比
發(fā)布人：上海艾荔艾金屬材料有限公司bt990.com.cn
更新時(shí)間：2015-12-31
利用金相顯微鏡分析7A04鋁合金半固態(tài)與鑄態(tài)組織，對(duì)半固態(tài)與鑄態(tài)7A04鋁合金進(jìn)行極化曲線(xiàn)與阻抗譜電化學(xué)測(cè)試分析，通過(guò)中性鹽霧實(shí)驗(yàn)對(duì)比分析二者的質(zhì)量損失率、腐蝕面積率和腐蝕坑深度，并采用激光共聚焦顯微鏡分析腐蝕形貌差異。
半固態(tài)與鑄態(tài)7A04鋁合金腐蝕行為的對(duì)比Comparison of corrosion behaviors of semi-solid and as-cast 7A04 aluminum alloy利用金相顯微鏡分析7A04鋁合金半固態(tài)與鑄態(tài)組織，對(duì)半固態(tài)與鑄態(tài)7A04鋁合金進(jìn)行極化曲線(xiàn)與阻抗譜電化學(xué)測(cè)試分析，通過(guò)中性鹽霧實(shí)驗(yàn)對(duì)比分析二者的質(zhì)量損失率、腐蝕面積率和腐蝕坑深度，并采用激光共聚焦顯微鏡分析腐蝕形貌差異。結(jié)果表明：半固態(tài)初生α(Al)晶粒細(xì)小圓整，半固態(tài)試樣的耐腐蝕性能優(yōu)于鑄態(tài)試樣的，半固態(tài)試樣腐蝕質(zhì)量損失率較低，半固態(tài)試樣的蝕坑平均深度及最大深度均小于鑄態(tài)試樣的。半固態(tài)工藝可顯著提高7A04鋁合金的耐腐蝕性能。
The microstructure of semi-solid and as-cast 7A04 aluminum alloys was studied by optical microscopy, and the electrochemical corrosion behavior was investigated mainly by polarization curve and impedance spectroscopy. The mass loss rate, corrosion area rate and corrosion depth were researched by the salt spray corrosion, the corrosion morphologies were observed by laser scanning confocal microscopy. The results show that the semi-solid processing leads to a structure with fine and round grains (primary α(Al)), corrosion resistance of semi-solid sample is better than that of the as-cast sample. Both mass-loss and average corrosion depth of semi-solid sample are smaller than those of the as-cast sample. The semi-solid processing can improve the corrosion resistance of 7A04 aluminum alloy obviously.
作為值得信賴(lài)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(zhuān)業(yè)的團(tuán)隊(duì)。在同客戶(hù)交易的過(guò)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(duì)當(dāng)前和未來(lái)的市場(chǎng)需求，艾荔艾致力于為客戶(hù)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.
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