Influence of composition and processing parameters on mechanical properties and erosion response of Ni–TiB2coatings
作者:
WertJ. J.,
OppligerS. J.,
期刊:
Materials Science and Technology
(Taylor Available online 1992)
卷期:
Volume 8,
issue 9
页码: 825-836
ISSN:0267-0836
年代: 1992
DOI:10.1179/mst.1992.8.9.825
出版商: Taylor&Francis
数据来源: Taylor
摘要:
AbstractSputtered Ni–TiB2coatings have been shown to protect Ti–6Al–4V and Inconel 718 substrates from solid particle erosion. However, before new erosion resistant coatings can be efficiently designed, it is essential that the role of mechanical properties in determining erosion resistance be fully understood. In this investigation, nanoindentation techniques were used to quantify the effects of substrate preparation, coating composition, and sputtering process parameters on the elastic moduli and indentation hardness of thin coatings deposited on Ti–6Al–4V and Inconel 718 substrates. The influence of these parameters on coating adhesion was determined using a conventional scratch test. Elastic moduli, indentation hardnesses, and coating adhesion were correlated with erosion behaviour. The erosion resistance of the coatings that exhibited microscopic ductility is dependent on the nodule diameter and coating properties such as hardness, elastic modulus, and fracture toughness.MST/1697
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