【摘要】：利用多弧離子鍍(Arc ion plating,AIP)技術(shù),在T10鋼和SKD11模具鋼上經(jīng)過氮碳共滲處理后鍍上AlCr N納米多層膜。通過控制氮碳共滲層的結(jié)構(gòu)、改變沉積AlCrN涂層時的溫度和粘結(jié)層氮氣偏壓得到不同工藝條件下的樣品,通過X射線衍射儀、掃描電鏡、透射電鏡研究了涂層相結(jié)構(gòu)和橫截面組織,利用劃痕儀、維氏硬度計、摩擦磨損儀對涂層結(jié)合力、硬度、摩擦性能等力學(xué)性能進(jìn)行測試。研究結(jié)果如下:(1)在T10鋼基體上利用離子氮碳共滲技術(shù),制備氮碳共滲層后再鍍上AlCrN涂層,得到氮碳共滲-AlCr N復(fù)合涂層。氮碳共滲層的存在為AlCrN涂層與基體之間提供了良好的過渡層。與未經(jīng)氮碳共滲預(yù)處理的AlCrN單一涂層相比,復(fù)合涂層的結(jié)合力上升10N,摩擦系數(shù)從0.6下降到0.4。(2)在不同的沉積溫度和不同狀態(tài)的SKD11模具鋼上沉積AlCrN涂層,隨著沉積溫度的升高,復(fù)合涂層的組織變得致密。在350℃、400℃、450℃下沉積涂層的效率分別為0.533μm/h、0.587μm/h、0.674μm/h。在相同的沉積溫度下,復(fù)合涂層的耐磨性比單一AlCrN涂層提升了3~4倍。(3)在有無氮碳共滲層SKD11模具鋼上,改變沉積粘結(jié)層時的氮氣偏壓,分別在0.8 Pa、2 Pa和3 Pa的氮氣偏壓下沉積AlCrN涂層。在復(fù)合涂層中,隨著氮氣偏壓的增加在粘結(jié)層中形成了{(lán)200}Cr N的擇優(yōu)取向,結(jié)合力從48 N提升到65 N,上升的結(jié)合力對硬度和耐磨性能的提升是有幫助的。
[Abstract]:AlCr N nanocrystalline multilayer films were deposited on T10 steel and SKD11 die steel by means of multi-arc ion plating (Arc ion plating,AIP). By controlling the structure of the nitrocarburized layer, changing the temperature of the AlCrN coating and the bias pressure of the bonding layer nitrogen, the samples under different technological conditions were obtained, and the samples were obtained by X-ray diffractometer and scanning electron microscope (SEM). The phase structure and cross section structure of the coating were studied by TEM. The adhesion, hardness and friction properties of the coating were measured by scratch tester, Vickers hardness tester and friction and wear tester. The results are as follows: (1) Nitrocarburized AlCrN coating was prepared on T10 steel substrate by ion nitrocarburizing technique, and then AlCrN coating was deposited on T10 steel substrate to obtain nitrocarburization-AlCr N composite coating. The existence of nitrocarburizing layer provides a good transition layer between AlCrN coating and substrate. Compared with the single AlCrN coating without nitrocarburizing pretreatment, the adhesion of the composite coating increased by 10 N, and the friction coefficient decreased from 0.6 to 0.4. (2) the AlCrN coating was deposited on SKD11 die steel at different deposition temperatures and different states, with the increase of deposition temperature. The microstructure of the composite coating becomes compact. The efficiency of the coating deposited at 350 鈩，

本文編號：2293775