Film-substrate interface stresses and their role in the tribological performance of surface coatings

Ramalingam, S.; Zheng, Lanshi

doi:10.1016/0301-679x(95)98963-e

Cited by 68 publications

(24 citation statements)

References 14 publications

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“…Wprowadzenie Dotychczas problem kształtowania stanu naprężeń wła-snych w procesach utwardzania powierzchniowego na drodze obróbki cieplnej i cieplno-chemicznej [1][2][3][4][5][6] i ich superpozycji z naprężeniami od zewnętrznych obciążeń eksploatacyjnych [2,7,8] oraz naprężenia własne pochodzące od obróbki ubytkowej przez szlifowanie tradycyjnymi i nowoczesnymi materiałami ściernymi [9][10][11][12] stanowiły przedmiot odrębnych rozważań. Istnieje potrzeba wspólne-go i wzajemnie sprzężonego rozpatrywania tych zagadnień, gdyż transformacja stanu naprężeń w trakcie kształtowania technologicznej warstwy wierzchniej obejmuje wszystkie zabiegi technologiczne i nie jest prostą sumą wynikającą z procesów jednostkowych.…”

Section: Abstract: Synergy Residual Stresses Vacuum Carburizing Grunclassified

The influence of modern thermo-chemical and abrasive treatments on the distribution of residual stresses in the surface layer of 17CrNi6-6 steel

Kruszyński¹,

Sawicki²,

Wójcik³

2015

Mechanik

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W niniejszej pracy przedstawiono wyniki badań dotyczące określenia stanu naprężeń własnych powstałych w wyniku kształtowania warstwy wierzchniej materiału poprzez obróbkę nawęglania próżniowego i szlifowania. Synergiczny wpływ obróbki cieplno-chemicznej i ściernej badano na próbkach pierścieniowych wykorzystywanych do badań naprężeń własnych metodą Dawidenkowa. Próbki poddano procesowi nawęglania próżniowego i następnie szlifowano ściernicą elektrokorundową -38A60K8V oraz ściernicą z ziarnami CBN -RNB80/63B75V. Podczas szlifowania stosowano ciecze obróbkowe: emulsja olejowa 5%, wydatek ok. 20 l/min, olej Micro5000 podawany z minimalnym wydatkiem (MQL) ok. 25 ml/h, obróbka na sucho. Na podstawie przeprowadzonych badań określono wpływ rodzaju ściernicy oraz czynnika chłodząco-smarującego na rozkład naprężeń własnych w warstwie wierzchniej. Najlepsze efekty szlifowania, w odniesieniu do rozkładu naprężeń wła-snych, uzyskano przy podawaniu cieczy obróbkowej (emulsji olejowej) w trybie obfitym podczas szlifowania ściernicą z ziarnami CBN.SŁOWA KLUCZOWE: synergizm, naprężenia własne, nawęglanie próżniowe, szlifowanieIn this paper we present research concerning the determination of the stresses resulting from forming the material surface layer by vacuum carburizing and grinding. The synergistic effect of thermo-chemical and abrasive treatments was studied on ring samples used for Dawidenkow stress calculation method. The samples were subjected to vacuum carburizing and then grinded using aloxite grinding wheel -38A60K8V and CBN-RNB80/63B75V. When grinding, apart from dry machining, selected cutting fluids were used: 5% oil emulsion with quantity lubrication approx. 20 l/min, oil Micro5000 administered with a minimum quantity lubrication (MQL) approx. 25 ml/h. Based on the study, the effect of grinding-cooling lubricant type on the stresses distribution in the surface layer was defined. Optimum results with respect to the distribution of stresses were achieved for the abrasive treatment in fluid (oil emulsion) under rich lubrication regime using CBN grinding wheel. KEYWORDS: synergy, residual stresses, vacuum carburizing, grindingWprowadzenie Dotychczas problem kształtowania stanu naprężeń wła-snych w procesach utwardzania powierzchniowego na drodze obróbki cieplnej i cieplno-chemicznej [1-6] i ich superpozycji z naprężeniami od zewnętrznych obciążeń eksploatacyjnych [2,7,8]

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Section: Abstract: Synergy Residual Stresses Vacuum Carburizing Grunclassified

The influence of modern thermo-chemical and abrasive treatments on the distribution of residual stresses in the surface layer of 17CrNi6-6 steel

Kruszyński¹,

Sawicki²,

Wójcik³

2015

Mechanik

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“…Table 2. Distance from the surface, µm As it has been mentioned in the literature, such a load-carrying capability, which is determined by the relationship between the substrate and the coating Young modulus values, could have a significant influence either on the magnitude of the stresses developed at the film-substrate interface [28] or on the mechanisms responsible for coating delamination. However, as reported by Borrero-López et al [7], such a relationship is not directly related with the processes starting at the substrate-coating interface.…”

Section: Present Workmentioning

confidence: 99%

Sliding wear of a-C:H coatings against alumina in corrosive media

Staia

Puchi-Cabrera

Iost

et al. 2013

Diamond and Related Materials

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. This paper reports the results obtained from the study of friction and sliding wear in two corrosive solutions of an a-C:H coating deposited on 316L stainless against an alumina ball, employed as static counterpart. Calculations of the values of the von Mises stresses developed at the coating-substrate interface, as soon as the ball touches the coated sample, and how this state of stress influences the response of the coated system under the corrosion environment, are presented and discussed. The results obtained from these calculations, as well as from the experiments conducted in the present research, are compared with other experiments published in the literature, where a-C:H coatings deposited on different substrates and with different coating architectures were tested in similar corrosive media. It has been determined that in those systems, where the von Mises stress in the coating, found in the vicinity of the interface, exceeds the threshold value of approximately 370 MPa, coating failure with spallation will take place, regardless of the substrate nature on which this coating has been deposited. From this analysis it has been concluded that the coating yield strength is of utmost importance in conferring the a-C:H coated system the required stability in a corrosive solution.

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“…Similarly, the radial elastic strains at the oxide-DZ interface during sliding are much smaller than the plastic strains around Rc indentations. Rather the approach first suggested by Ramalingam and Zheng [13] of considering shear stresses acting parallel to the coating-substrate interface and normal stresses acting perpendicular to the interface would appear most promising.…”

Section: Simple Adhesion Tests Versus Repeated Sliding Testsmentioning

confidence: 99%

Fatigue-like failure of thermally oxidised titanium in reciprocating pin-on-plate wear tests

Dahm

2009

Wear

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Film-substrate interface stresses and their role in the tribological performance of surface coatings

Cited by 68 publications

References 14 publications

The influence of modern thermo-chemical and abrasive treatments on the distribution of residual stresses in the surface layer of 17CrNi6-6 steel

The influence of modern thermo-chemical and abrasive treatments on the distribution of residual stresses in the surface layer of 17CrNi6-6 steel

Sliding wear of a-C:H coatings against alumina in corrosive media

Fatigue-like failure of thermally oxidised titanium in reciprocating pin-on-plate wear tests

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