CAJ | 학술논문

目的：研究一种钛合金化学转化工艺,增强钛合金表面防护能力及其与涂层的结合能力。方法通过单因素实验确定TC1钛合金氟化物-磷酸盐转化工艺,采用SEM,EDS,XRD分析膜层的微观形貌及成分,同时测试转化膜的有关性能。结果在Na3 PO440 g/L,NaF 15 g/L,酸度调节剂A 25 mL/L,pH控制在4.4~4.6之间,温度30益条件下,可在TC1钛合金表面获得均匀一致的灰色转化膜。转化膜由许多细小的球状晶粒组成,主要相成分为Na3 TiOF5及Na2 TiF6。转化膜的摩擦系数仅为0.3~0.5,明显低于TC1基体。转化膜与TB06-9底漆的干性附着力为0级,浸泡48 h后的湿态附着力仍可达1级,远远好于TC1基体。结论氟化物-磷酸盐转化膜可以降低TC1钛合金的摩擦系数,提高其与有机涂层的附着力。
목적：연구일충태합금화학전화공예,증강태합금표면방호능력급기여도층적결합능력。방법통과단인소실험학정TC1태합금불화물-린산염전화공예,채용SEM,EDS,XRD분석막층적미관형모급성분,동시측시전화막적유관성능。결과재Na3 PO440 g/L,NaF 15 g/L,산도조절제A 25 mL/L,pH공제재4.4~4.6지간,온도30익조건하,가재TC1태합금표면획득균균일치적회색전화막。전화막유허다세소적구상정립조성,주요상성분위Na3 TiOF5급Na2 TiF6。전화막적마찰계수부위0.3~0.5,명현저우TC1기체。전화막여TB06-9저칠적간성부착력위0급,침포48 h후적습태부착력잉가체1급,원원호우TC1기체。결론불화물-린산염전화막가이강저TC1태합금적마찰계수,제고기여유궤도층적부착력。
ABSTRACT:Objective A chemical conversion technique was researched to enhance the protective ability of titanium alloy surface and the adhesion between titanium alloy and organic coating. Methods The preparation technique of fluoride-phosphate conversion coating formed on TC1 alloy was determined by the single-factor experiments. The microstructure and composition of conversion coating were analyzed by SEM, EDS and XRD. Besides, the related properties of the conversion coating were researched. Results A uniform, coherent and gray conversion coating could be obtained on the surface of TC1 alloy when Na3 PO4 , NaF, Acidity Regu-lator A, pH and temperature were 40 g/L, 15 g/L, 25 mL/L, 4. 4~4. 6 and 30 ℃, respectively. The microstructure of the coa-ting showed many small spherical grains. The main phase components were Na3 TiOF5 and Na2 TiF6 . The friction coefficient of the fluoride-phosphate conversion coating was only 0. 3~0. 5, which was significantly lower than that of TC1 alloy. The dry adhesion level between conversion coating and TB06-9 organic coating was 0, and the wet adhesion level after 48 h immersion could still reach 1, both were far better than those of the TC1 alloy substrate. Conclusion Fluoride-phosphate conversion coating could reduce the friction coefficient TC1 titanium alloy, and improve the adhesion between TC1 alloy and organic coating.