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EVALUATION OF ADHESION AND PLASTICITY OF PVD FILMS

LIU Changqing JIN Zhujing YU Li YU Zhiming WU Weitao Corrosion Science Laboratory , Institute of corrosion and Protection of Metals , Academia Sinica , Shenyang , China

金属学报(英文版)

Evaluation of adhesion of PVD Ti and TiN films on steel A_3 was carried out with constant rate pulling test(CRPT)at 0.05 mm/min under simultaneous SEM observation. As a criterion,the critical elongations of the film/substrate system for the initial cracking and spelling of the film may be applied to evaluate the plasticity and adhesion of the film to substrate.The conventional scratch test was also made for evaluation of the adhesion for the same systems.Both methods give the coordinate assessment for all the systems. In addition,the influence of the films on the ultimate yield strength of the substrate was discussed and another criterion of conherent work was proposed for the evaluation.

关键词: PVD film , null , null , null

Local Enrichment of Active Element Y in Y-modified PVD Films on Mild Steel Substrate

LIU Changqing WU Weitao JIN Zhujing DAI Shaoxia WANG Wenhao Corrosion Science Laboratory , Institute of Corrosion and Protection of Metals , Academia Sinica , Shenyang , 110015 , ChinaInstitute of Metal Research , Academia Sinica , Shenyang , 110015 , ChinaTo whom correspo

材料科学技术（英文）

By means of EPMA,SIMS and XTEM tech- niques,the element distribution at the transition zone of Y-modified ion plated titanium and titanium nitride film on A3 steel substrate and the variation of the element content on the surface of the evaporation source before and after service were studied in detail.A mode was proposed in terms of preferential evaporation and micro-tunnel trans- portation of Y at the interface of film/substrate.

关键词: Y-enrichment , null , null , null

PVD薄膜的粘附性和塑韧性评估

刘长清 , 金柱京 , 于力 , 于志明 , 吴维(山文)

金属学报

采用物理气相沉积(PVD)技术,在单面抛光的缺口拉伸试样上生长Ti和TiN薄膜,采用扫描电镜(SEM)观察膜面以0.05mm/min变形速度拉伸变形行为并记录和确定膜的开裂和脱落时的临界伸长量δ_c和δ_s,用来评价薄膜的粘附性和塑韧性;相同的膜/基体系进行划痕实验,确定其临界载荷L_c并评价膜的粘附性,结果表明前者较好地说明了膜与基体粘附性和膜自身的塑韧性,后者只能评价膜的粘附性,而且两种方法评价粘附性有良好的一致性,此外还比较了几种涂层样品的拉伸曲线并讨论了薄膜的塑韧性和粘附性对基材屈服极限的影响,引入了粘附功判据

关键词: PVD薄膜 , constant rate pulling test , scratch test , adhesion , null

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