LY12鋁合金微弧氧化自潤滑復合膜的制備與摩擦性能

LY12鋁合金微弧氧化自潤滑復合膜的制備與摩擦性能Preparation and tribological properties of micro-arc oxidation self-lubricating composite coatings on LY12 aluminum alloy

在KOH-KF-NaAlO2為組分的電解液中添加BN顆粒，采用微弧氧化技術，在LY12鋁合金表面制備自潤滑復合膜層(Al2O3/BN)。研究自潤滑復合膜的形貌與微觀結構以及工藝參數對復合膜中BN體積分數的影響，討論BN顆粒的沉積機制，并分析復合膜的摩擦性能。結果表明：自潤滑復合膜主要由α-Al2O3、γ-Al2O3及BN組成；隨著電壓和BN質量濃度的增加，BN體積分數先增大后趨緩，電解液組分濃度對膜層BN的體積分數影響不大；當BN體積分數為10%，摩擦時間為120 min時，膜層摩擦因數降至0.173，BN顆粒的加入能有效減小摩擦，改善復合膜的摩擦性能。

Al2O3/BN self-lubricating composite coatings were prepared on the surface of LY12 alloy by micro-arc oxidation in the KOH-KF-NaAlO2 electrolyte solution with BN particles. The morphology and microstructure of composite coatings were analyzed, the effects of process parameters on volume fraction of BN were investigated, the deposition mechanism of BN particles was discussed, and the tribological behaviors of composite coatings were also evaluated. The results show that the self-lubricating composite coating on LY12 is mainly composed of α-Al2O3, γ-Al2O3 and BN. Volume fraction of BN of composite coatings firstly increase, then level off with enhancing voltage and increasing mass concentration of BN, but the concentration of electrolyte components has certain influence on volume fraction of BN. Under the condition of 10% for volume fraction of BN and 120 min for friction time, friction coefficient of the composite coating reaches 0.173, which indicates that the addition of BN particles can effectively reduce friction and improve the friction properties of the self-lubricating composite coating.

全文下載：https://pan.baidu.com/s/1iFRObv6FMhKamYyaPOeeYg?

作為值得信賴的合作伙伴和高品質金屬合金的半成品供應商，通項公司擁有完善的服務體系和專業的團隊。在同客戶交易的過程中，我們力求根據不同的應用需求將我們的產品做到精益求精。針對當前和未來的市場需求，通項公司致力于為客戶提供優秀的金屬材料解決方案。

TXCO 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. TXCO develops the superior alloy material solutions for current and future challenges.

獲取更多我們供應的產品和服務信息，請致電086-021-3113 6111或發電子郵件service@txco.ltd聯系我們，您也可以通過微信，微博，領英，臉書，推特和谷歌+與我們互動。

For more information on the products and services that we supply, call us at 086-021-3113 6111 or email us at service@txco.ltd. You can also get in touch on social media, we are constantly active on Weixin, Weibo, LinkedIn, Facebook, Twitter and Google+.