半固態(tài)與鑄態(tài)7A04鋁合金腐蝕行為的對比
發(fā)布人：上海艾荔艾金屬材料有限公司www.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，對半固態(tài)與鑄態(tài)7A04鋁合金進(jìn)行極化曲線與阻抗譜電化學(xué)測試分析，通過中性鹽霧實(shí)驗(yàn)對比分析二者的質(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，對半固態(tài)與鑄態(tài)7A04鋁合金進(jìn)行極化曲線與阻抗譜電化學(xué)測試分析，通過中性鹽霧實(shí)驗(yàn)對比分析二者的質(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(duì)。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.
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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?and?LinkedIn.