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Content available The effect of nitrogen ion implantation on nano-scale hardness and elastic modulus of WC-Co indexable knives for wood materials machining
Wilkowski Jacek, Barlak Marek, Bottger Roman, Werner Zbigniew
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
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2019
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No. 108
79--83
EN
The effect of nitrogen ion implantation on nano-scale hardness and elastic modulus of WC-Co indexable knives for wood materials machining. The paper presents the results of a study investigating the effects of nitrogen ion implantation into the surface layer of WC-Co blades, used for machining wood materials, on their hardness and modulus of elasticity at the nano-scale. The modified blades were analyzed in six variants of implantation process parameters, and compared with control blades (virgin, unmodified). Three energies of accelerating nitrogen ions were used in the implantation process (5, 50 and 500 keV) and two doses of implanted ions (1e17 and 5e17 cm-2). The nano-hardness and elastic modulus of all blades were measured using an Anton Paar TriTec (UNHT) hardness tester.
PL
Wpływ implantacji jonów azotu na twardość i moduł sprężystości w nano-skali noży wymiennych WC-Co do obróbki materiałów drzewnych. W artykule przedstawiono wyniki wpływu procesu implantacji jonów azotu do warstwy wierzchniej ostrzy WC-Co do obróbki materiałów drzewnych na ich twardość i moduł sprężystości w nano-skali. Analizowano ostrza modyfikowane w sześciu wariantach parametrów procesu implantacji, oraz w celach porównawczych, ostrza kontrolne (niemodyfikowane). Zastosowano trzy energie przyspieszenia jonów azotu w procesie implantacji (5, 50 i 500 keV) oraz dwie dawki implantowanych jonów (1e17 oraz 5e17 cm-2). Pomiaru twardości i modułu sprężystości w nano-skali wszystkich ostrzy dokonano przy użyciu twardościomierza Anton Paar TriTec (UNHT).
2
Content available remote SIMS depth profile analysis of WC-Co composite used in wood materials machining after nitrogen ion implantation
Wilkowski J., Barlak M., Konarski P., Böttger R., Werner Z.
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
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2018
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No. 104
400--404
EN
The paper presents the analysis of depth profiles WC-Co samples obtained using the SIMS method. The surface of samples was modified in the process of nitrogen ions implantation. Secondary ion mass spectrometry (SIMS) is a very useful technique for the analysis of layered systems. It is based on the primary ion beam sputtering of solids and mass analysis of the emitted secondary ions. The results show a high correspondence between the nitrogen depth profiles obtained in the SUSPRE modeling and in the SIMS experiment.
3
Content available remote Enhancement of bending fatigue life in TiNi shape-memory alloy tape by nitrogen ion implantation
Takeda K., Matsui R., Tobushi H., Homma S., Levintant-Zayonts N., Kucharski S.
Archives of Mechanics
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2015
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Vol. 67, nr 4
293--310
EN
A shape-memory alloy (SMA) is expected to be applied as intelligent or smart material since it shows the functional characteristics of the shape memory effect and superelasticity. Most SMA elements, with these characteristics, perform cyclic motions. In these cases, the fatigue property of SMA is one of the most important issues in view of evaluating functional characteristics of SMA elements. The fatigue properties are complex since they depend on stress, strain, temperature and their hysteresis. If an SMA is implanted with high-energy ions, the thermomechanical properties of the material may change, resulting in long fatigue life. In the present study, the nitrogen ion implantation was applied to modify the surface of a TiNi SMA tape and the influence of implantation treatment on the bending fatigue properties was investigated.
4
Content available remote Influence of nitrogen ion implantation on deformation and fatigue properties of TiNi shape-memory alloy wire
Takeda K., Mitsui K., Tobushi H., Levintant-Zayonts N., Kucharski S.
Archives of Mechanics
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2013
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Vol. 65, nr 5
391--405
EN
A shape memory alloy (SMA) is expected to be applied as intelligent material since it shows the unique characteristics of the shape memory effect and superelasticity. Most SMA elements, with these characteristics, perform cyclic motions. In these cases, fatigue of SMA is one of the important properties in view of evaluating functional characteristics. The fatigue properties are complex since they depend on stress, strain, temperature and time. If SMA is implanted by high energy ions, the thermomechanical properties may change, resulting in long fatigue life. In the present study, the nitrogen ion implantation was applied to modify TiNi SMA wire surface and the influence of implantation treatment on the tensile deformation and bending fatigue properties was investigated.
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