中国有色金属学报(英文版)
中國有色金屬學報(英文版)
중국유색금속학보(영문판)
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2013年
7期
1985-1992
,共8页
硅铝合金%多层膜结构金刚石涂层%氮化硅%切削性能
硅鋁閤金%多層膜結構金剛石塗層%氮化硅%切削性能
규려합금%다층막결구금강석도층%담화규%절삭성능
aluminum-silicon alloy%multilayer diamond films%silicon nitride%cutting performance
硅铝合金非常难以进行切削加工,金刚石刀具被认为是当前切削该类材料的最好工具。考虑到高附着力和好的表面形貌对化学气相沉积(CVD)金刚石涂层的应用具有重要影响,提出了基于热丝化学气相沉积(HFCVD)方法的多层膜技术,并在氮化硅刀具上沉积出多层膜结构的金刚石涂层,微米金刚石(MCD)/纳米金刚石(NCD)结构。为了与多层膜金刚石涂层进行比较,同时制备出单层MCD和NCD涂层。采用场发射电镜(FE?SEM)和拉曼光谱对沉积的金刚石薄膜进行表征。研究了有沉积金刚石涂层和没有涂层的刀具车削硅铝合金的切削性能。结果表明:MCD/NCD多层金刚石涂层表现出优异的耐磨性能,具有较小的后刀面磨损量,涂层无脱落。
硅鋁閤金非常難以進行切削加工,金剛石刀具被認為是噹前切削該類材料的最好工具。攷慮到高附著力和好的錶麵形貌對化學氣相沉積(CVD)金剛石塗層的應用具有重要影響,提齣瞭基于熱絲化學氣相沉積(HFCVD)方法的多層膜技術,併在氮化硅刀具上沉積齣多層膜結構的金剛石塗層,微米金剛石(MCD)/納米金剛石(NCD)結構。為瞭與多層膜金剛石塗層進行比較,同時製備齣單層MCD和NCD塗層。採用場髮射電鏡(FE?SEM)和拉曼光譜對沉積的金剛石薄膜進行錶徵。研究瞭有沉積金剛石塗層和沒有塗層的刀具車削硅鋁閤金的切削性能。結果錶明:MCD/NCD多層金剛石塗層錶現齣優異的耐磨性能,具有較小的後刀麵磨損量,塗層無脫落。
규려합금비상난이진행절삭가공,금강석도구피인위시당전절삭해류재료적최호공구。고필도고부착력화호적표면형모대화학기상침적(CVD)금강석도층적응용구유중요영향,제출료기우열사화학기상침적(HFCVD)방법적다층막기술,병재담화규도구상침적출다층막결구적금강석도층,미미금강석(MCD)/납미금강석(NCD)결구。위료여다층막금강석도층진행비교,동시제비출단층MCD화NCD도층。채용장발사전경(FE?SEM)화랍만광보대침적적금강석박막진행표정。연구료유침적금강석도층화몰유도층적도구차삭규려합금적절삭성능。결과표명:MCD/NCD다층금강석도층표현출우이적내마성능,구유교소적후도면마손량,도층무탈락。
Aluminum?silicon (Al?Si) alloy is very difficult to machine and diamond tools are considered by far the best choice for the machining of these materials. Experimental results in the machining of the Al?Si alloy with diamond coated inserts are presented. Considering the fact that high adhesive strength and fine surface morphology play an importance role in the applications of chemical vapor deposition (CVD) diamond films, multilayer technique combining the hot filament CVD (HFCVD) method is proposed, by which multilayer diamond-coating on silicon nitride inserts is obtained, microcrystalline diamond (MCD)/nanocrystalline diamond (NCD) film. Also, the conventional monolayer NCD and MCD coated inserts are produced for comparison. The as-deposited diamond films are characterized by field emission scanning electron microscopy (FE-SEM) and Raman spectrum. All the CVD diamond coated inserts and uncoated insert endure the aluminum?silicon alloy turning to estimate their cutting performances. Among all the tested inserts, the MCD/NCD coated insert exhibits the perfect behavior as tool wear due to its very low flank wear and no diamond peeling.