A review of the methods for the evaluation of coating-substrate adhesion

Chalker, Paul R.; Bull, SJ; Rickerby, D.S.

doi:10.1016/0921-5093(91)90482-3

Cited by 217 publications

(87 citation statements)

References 37 publications

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“…The adhesion strength of the CP layer to the gel surface was qualitatively evaluated by microindentation analysis [45][46][47] performed on the surface of the freeze-dried hydrogel-CP composite.…”

Section: Resultsmentioning

confidence: 99%

“…In order to evaluate the adherence of the mineral layers attached to pHEMA hydrogels, the relative crack resistance was qualitatively evaluated by indentation. [45][46][47] The indentation test was performed on the freeze-dried composite using a Vickers indentor (Micromet, Buehler, Ltd., USA). Loads from 5 to 15 Newtons were applied for 20 seconds for each measurement.…”

Section: Xrdmentioning

confidence: 99%

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Preparation of pHEMA–CP composites with high interfacial adhesion via template-driven mineralization

Song

Saiz

Bertozzi

2003

Journal of the European Ceramic Society

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ABSTRACT. We report a template-driven nucleation and mineral growth process for the high-affinity integration of calcium phosphate (CP) with a poly(2-hydroxyethyl methacrylate) (pHEMA) hydrogel scaffold. A mineralization technique was developed that exposes carboxylate groups on the surface of crosslinked pHEMA, promoting high-affinity nucleation and growth of calcium phosphate on the surface along with extensive calcification of the hydrogel interior. External factors such as the heating rate, the agitation of the mineral stock solution and the duration of the process that affect the outcome of the mineralization were investigated. This template-driven mineralization technique provides an efficient approach toward bonelike composites with high mineral-hydrogel interfacial adhesion strength.

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Section: Resultsmentioning

confidence: 99%

Section: Xrdmentioning

confidence: 99%

Preparation of pHEMA–CP composites with high interfacial adhesion via template-driven mineralization

Song

Saiz

Bertozzi

2003

Journal of the European Ceramic Society

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“…A coating of the glasses 6P57 or 6P68 with Bioglass Ò or hydroxyapatiteembedded particles were used to coat a Ti6Al4V alloy by firing at 800°C for 30 s [39]. A qualitative study of the adhesion was performed using Vickers indentation in air, indentation cracks regularly being used to study the adhesion of coatings [1,40]. For these coatings, the cracks never propagated along the interface, but were driven into the glass or across the particles.…”

Section: Coatings On Ti For Biomedical Applicationsmentioning

confidence: 99%

Recent developments in the preparation, characterization and applications of glass- and glass–ceramic-to-metal seals and coatings

et al. 2011

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There has, in recent years, been a major revival of interest in glass-and glass-ceramic-to-metal seals and coatings for new applications. Experience dictates that many factors need to be taken into consideration in the successful design and manufacture of high-quality seals, particularly if an adequate component lifetime is to be achieved. For example, during their preparation, undesirable reactions may occur between diffusing metal species and glass constituents, and these can lead to the formation of highly localized internal stresses, which can initiate failure of a seal either during manufacture or, more seriously, whilst in service due to the influence of static fatigue. In the case of high-temperature systems, reactions under hostile operating conditions also need to be taken into consideration. In this review, the factors learnt from past experience that influence the formation and lifetime behaviour of glass and glass-ceramic/metal systems are briefly introduced, and their relevance to the newer applications including solid oxide fuel cell sealants and coatings on titanium for biomedical applications is discussed.

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“…。对于薄膜与基体间的结合强度可从两种不同的途径去测量 [60] ：① 以力的形式，把薄膜从基体分离单位面积所需的最大的力称为薄膜结合力，即力学法；② 从能量或功的角度，测定把薄膜从基体分离所做的功，即核化法。对于实际应用而言，核化法需要若干研究作为基础而极难实施。力学法的实用性较强，也是应用最广、研究最多的一种方法，主要包括基片拉伸法、表面压痕法、纳米划痕法等。 3.1.1 基片拉伸法基片拉伸测试技术建立在薄硬涂层的基础上，其原理是基体施加拉伸应力，由于涂层和基体的弹性模量不同，膜基结合界面上将产生切应力，如果这个应力超过涂层和基体的结合强度，将发生脱粘现象。该方法的原理和测试后形貌 [61] 如图 10 所示，图 10 拉伸法测试原理和形貌作用力平行于膜基结合界面，结合强度定义为涂层在基体上保持不脱落的最大切应力 [62] 。基片拉伸法仅在涂层的模量大于基体模量的情况下适用，否则涂层变形能力强，能实现与基体的协调变形，使切应力无法产生。郑小玲等 [63] 研究了不同固化工艺的胶粘剂涂层在拉伸法中的应变与拉伸载荷的关系，结果表明该法在涂层的变形能力较大时无法获得涂层开裂信号。同样说明涂层的变形能力大于基体的变形能力时，基片拉伸法无法测定膜基界面结合强度。 3.1.2 压痕法用压痕法测定涂层/基体复合体系的力学性能由来已久。自 20 世纪 60 年代始，MARASHALL 等 [64] 定量地研究陶瓷材料在压入过程中裂纹萌生和扩展的规律，之后 HUTCHINSON 等 [65] 对两相材料裂纹产生和扩展规律的描述，为后续涂层/基体复合体系界面结合强度的表征提供了理论和试验基础。对涂层/基体复合体系在压入过程中的复杂弹塑性力学行为进行简化处理之后，国外众多学者相继提出了压痕法测定薄膜(涂层)/基体界面结合强度的模型 [66][67] 。该方法的实现原理是对涂层进行不同载荷的压痕试验，以涂层开始剥落的临界载荷来表征结合强度，其原理和测试后形貌 [68] 如图 11 所示。…”

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Review on Impact and Erosion Wear Research of Hard Coatings

Cai¹

2017

JME

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Abstract：Impacts and vibrations are common in the engineering fields, which leads the impact wear and erosion wear become one of the prime reasons for the destruction and failure of key components. The development and application of surface engineering technologies, especially the surface coating technology, effectively improve this situation, resulting in a prolonged service life by giving better performance on the material surface. The impact wear and erosion wear of coatings are not only depended on materials, but also affected by the angle, temperature and other service conditions, which is a complex process of multiple factors. Experimental studies are usually used to obtain reliable data and results, and the development of test device is briefly introduced, as well as the characterization methods of impact performance. The future research trends of the impact and erosion behavior of hard coating are also prospected.

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A review of the methods for the evaluation of coating-substrate adhesion

Cited by 217 publications

References 37 publications

Preparation of pHEMA–CP composites with high interfacial adhesion via template-driven mineralization

Preparation of pHEMA–CP composites with high interfacial adhesion via template-driven mineralization

Recent developments in the preparation, characterization and applications of glass- and glass–ceramic-to-metal seals and coatings

Review on Impact and Erosion Wear Research of Hard Coatings

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