钇元素的添加对电弧离子镀氮化钛铝涂层900℃氧化行为的影响  

The effect of introduction of yttrium on the oxidation of titanium aluminum nitride coatings at 900℃

作　　者：李明升[1,2] 冯长杰[2] 王福会[2] 

机构地区：[1]江西科技师范学院,江西省材料表面工程重点实验室,江西南昌330038 [2]中国科学院金属研究所,金属腐蚀与防护国家重点实验室,辽宁沈阳110016

出　　处：《功能材料》2007年第A07期2615-2618,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目（59971052）

摘　　要：利用脉冲偏压电弧离子镀技术在航空发动机压气机用1Cr11Ni2W2MoV不锈钢基体上沉积了Ti0．5Al0．5N、Ti0．49Al0．49Y0．02N和Ti0．48Al0．48Y0．04N复合金属陶瓷涂层，研究了稀土元素Y的添加对涂层的结构和900℃下抗氧化行为的影响。所沉积的3种涂层表面平整、致密，均为B1NaCl结构，Ti0．5Al0．5N和Ti0．49Al0．49Y0．02N以（220）为择优取向，Ti0．48Al0．48Y0．04N以（200）为择优取向。Y原子取代Ti0．5Al0．5N晶格中的部分Ti、Al原子后使晶格常数增加。900℃下Ti0．5Al0．5N涂层很快失效，造成不锈钢基体的严重氧化，Y的引入大大降低了涂层的氧化速率。含4％Y的涂层表现出比含2％Y的涂层更好的抗氧化性和抗剥落性能。Composite metastable Ti0.5Al0.5N、Ti0.49Al0.49Y0.02N and Ti0.48Al0.48Y0.04N coatings were respectively prepared on a wrought martensite steel 1Cr11Ni2W2MoV for aero-engine compressor blades by arc ion plating. All coatings possessed a dense structure and the same B1NaCl phase. The incorporation of element Y gave rise to an increase of the lattice parameter and a change of preferred orientation. At 900℃ in air, the uncoated steel and steel coated with Ti0.5Al0.5N were oxidized seriously and the introduction of yttrium into the coatings dramastically improved the oxidation-resistance of the coatings. Ti0.48Al0.48Y0.04N exhibited a more exellent oxidation-resistance than Ti0.49Al0.49Y0.02N and provided good protection for the substrate. The presence of adequate Y in the coatings is in favor of suppression of the growth rate of oxide crystals, improvement of adhesion of oxide film to nitride and decrease of compressive stress produced during of oxidation.

关 键 词：电弧离子镀 氮化钛铝 氮化钛铝钇 氧化 

分 类 号：TG174.444[金属学及工艺—金属表面处理]