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0-180284256X |
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|a Failure mechanism of coated biomaterials under high impact-sliding contact stresses
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1 |
|a [Erscheinungsort nicht ermittelbar]
|b University of Windsor
|c 2014
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|a This study uses a newly developed testing method-- inclined cyclic impact-sliding test to investigate the failure behaviors of different types of biomaterials, (SS316L, Ti6Al4V and CoCr) coated by different coatings (TiN, DLC and PEO), under extremely high dynamic contact stress conditions. This test method can simulate the combined impact and sliding/rolling loading conditions, which is very practical in many aspects of commercial usages. During the tests, fatigue cracking, chipping, peeling and material transferring were observed in damaged area. This research is mainly focused on the failure behaviors of load-bearing materials which cyclic impacting and sliding are always involved. This purpose was accomplished in the three stages: First, impact-sliding test was carried out on TiN coated unhardened M2. It was found that soft substrate can cause early failure of coating due to the considerable plastic deformation in the substrate. In this case, stronger substrate is required to support coating better when tested under high contact stresses. Second, PEO coated Ti-6Al-4V was tested under pure sliding and impact-sliding wear conditions. PEO coating was found not strong enough to afford the high contact pressure under cyclic impact-sliding wear test due to its porous surface structure. However, the wear performance of PEO coating was enhanced due to the sub-stoichiometric oxide. To sum up, for load-bearing biomedical implants involved in high impacting movement, PEO coating may not be a promising surface protection. Third, the dense, smooth PVD/CVD bio-inert coatings were reconsidered. DLC and TiN coatings, combined by different substrates together with different interface materials were tested under the cyclic impact-sliding test using a set of proper loading. The results show that to choose a proper combination of coating, interface and substrate based on their mechanical properties is of great importance under the test condition. Hard substrates provide support to coating better and a ductile and adhesive interface layer can delay the cracked coating from peeled-off.
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1750442810369114112 |
| access_facet |
Electronic Resources |
| author |
Chen, Ying |
| author_facet |
Chen, Ying |
| author_role |
aut |
| author_sort |
Chen, Ying |
| author_variant |
y c yc |
| callnumber-sort |
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GBV-BASE-ODISS, lfer |
| contents |
This study uses a newly developed testing method-- inclined cyclic impact-sliding test to investigate the failure behaviors of different types of biomaterials, (SS316L, Ti6Al4V and CoCr) coated by different coatings (TiN, DLC and PEO), under extremely high dynamic contact stress conditions. This test method can simulate the combined impact and sliding/rolling loading conditions, which is very practical in many aspects of commercial usages. During the tests, fatigue cracking, chipping, peeling and material transferring were observed in damaged area. This research is mainly focused on the failure behaviors of load-bearing materials which cyclic impacting and sliding are always involved. This purpose was accomplished in the three stages: First, impact-sliding test was carried out on TiN coated unhardened M2. It was found that soft substrate can cause early failure of coating due to the considerable plastic deformation in the substrate. In this case, stronger substrate is required to support coating better when tested under high contact stresses. Second, PEO coated Ti-6Al-4V was tested under pure sliding and impact-sliding wear conditions. PEO coating was found not strong enough to afford the high contact pressure under cyclic impact-sliding wear test due to its porous surface structure. However, the wear performance of PEO coating was enhanced due to the sub-stoichiometric oxide. To sum up, for load-bearing biomedical implants involved in high impacting movement, PEO coating may not be a promising surface protection. Third, the dense, smooth PVD/CVD bio-inert coatings were reconsidered. DLC and TiN coatings, combined by different substrates together with different interface materials were tested under the cyclic impact-sliding test using a set of proper loading. The results show that to choose a proper combination of coating, interface and substrate based on their mechanical properties is of great importance under the test condition. Hard substrates provide support to coating better and a ductile and adhesive interface layer can delay the cracked coating from peeled-off. |
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(DE-627)180284256X, (DE-599)KXP180284256X |
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600 - Technology |
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620 - Engineering & allied operations |
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620 |
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620 |
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620 - Engineering |
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Online, Free |
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Technik |
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technology, engineering-process |
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eBook |
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Book, E-Book |
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Buch |
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text-online-monograph-independent |
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E-Book |
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not assigned |
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not assigned |
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0-180284256X |
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[Erscheinungsort nicht ermittelbar], University of Windsor, 2014 |
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[Erscheinungsort nicht ermittelbar]: University of Windsor, 2014 |
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DE-D117, DE-105, LFER, DE-Ch1, DE-15, DE-14, DE-Zwi2 |
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Verbunddaten SWB, Lizenzfreie Online-Ressourcen |
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2014 |
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2014 |
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University of Windsor |
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Chen, Ying VerfasserIn aut, Failure mechanism of coated biomaterials under high impact-sliding contact stresses, [Erscheinungsort nicht ermittelbar] University of Windsor 2014, Text txt rdacontent, Computermedien c rdamedia, Online-Ressource cr rdacarrier, Dissertation University of Windsor 2014, This study uses a newly developed testing method-- inclined cyclic impact-sliding test to investigate the failure behaviors of different types of biomaterials, (SS316L, Ti6Al4V and CoCr) coated by different coatings (TiN, DLC and PEO), under extremely high dynamic contact stress conditions. This test method can simulate the combined impact and sliding/rolling loading conditions, which is very practical in many aspects of commercial usages. During the tests, fatigue cracking, chipping, peeling and material transferring were observed in damaged area. This research is mainly focused on the failure behaviors of load-bearing materials which cyclic impacting and sliding are always involved. This purpose was accomplished in the three stages: First, impact-sliding test was carried out on TiN coated unhardened M2. It was found that soft substrate can cause early failure of coating due to the considerable plastic deformation in the substrate. In this case, stronger substrate is required to support coating better when tested under high contact stresses. Second, PEO coated Ti-6Al-4V was tested under pure sliding and impact-sliding wear conditions. PEO coating was found not strong enough to afford the high contact pressure under cyclic impact-sliding wear test due to its porous surface structure. However, the wear performance of PEO coating was enhanced due to the sub-stoichiometric oxide. To sum up, for load-bearing biomedical implants involved in high impacting movement, PEO coating may not be a promising surface protection. Third, the dense, smooth PVD/CVD bio-inert coatings were reconsidered. DLC and TiN coatings, combined by different substrates together with different interface materials were tested under the cyclic impact-sliding test using a set of proper loading. The results show that to choose a proper combination of coating, interface and substrate based on their mechanical properties is of great importance under the test condition. Hard substrates provide support to coating better and a ductile and adhesive interface layer can delay the cracked coating from peeled-off., https://scholar.uwindsor.ca/etd/5099 Verlag kostenfrei, https://scholar.uwindsor.ca/etd/5099 LFER, LFER 2022-06-15T11:28:29Z |
| spellingShingle |
Chen, Ying, Failure mechanism of coated biomaterials under high impact-sliding contact stresses, This study uses a newly developed testing method-- inclined cyclic impact-sliding test to investigate the failure behaviors of different types of biomaterials, (SS316L, Ti6Al4V and CoCr) coated by different coatings (TiN, DLC and PEO), under extremely high dynamic contact stress conditions. This test method can simulate the combined impact and sliding/rolling loading conditions, which is very practical in many aspects of commercial usages. During the tests, fatigue cracking, chipping, peeling and material transferring were observed in damaged area. This research is mainly focused on the failure behaviors of load-bearing materials which cyclic impacting and sliding are always involved. This purpose was accomplished in the three stages: First, impact-sliding test was carried out on TiN coated unhardened M2. It was found that soft substrate can cause early failure of coating due to the considerable plastic deformation in the substrate. In this case, stronger substrate is required to support coating better when tested under high contact stresses. Second, PEO coated Ti-6Al-4V was tested under pure sliding and impact-sliding wear conditions. PEO coating was found not strong enough to afford the high contact pressure under cyclic impact-sliding wear test due to its porous surface structure. However, the wear performance of PEO coating was enhanced due to the sub-stoichiometric oxide. To sum up, for load-bearing biomedical implants involved in high impacting movement, PEO coating may not be a promising surface protection. Third, the dense, smooth PVD/CVD bio-inert coatings were reconsidered. DLC and TiN coatings, combined by different substrates together with different interface materials were tested under the cyclic impact-sliding test using a set of proper loading. The results show that to choose a proper combination of coating, interface and substrate based on their mechanical properties is of great importance under the test condition. Hard substrates provide support to coating better and a ductile and adhesive interface layer can delay the cracked coating from peeled-off. |
| title |
Failure mechanism of coated biomaterials under high impact-sliding contact stresses |
| title_auth |
Failure mechanism of coated biomaterials under high impact-sliding contact stresses |
| title_full |
Failure mechanism of coated biomaterials under high impact-sliding contact stresses |
| title_fullStr |
Failure mechanism of coated biomaterials under high impact-sliding contact stresses |
| title_full_unstemmed |
Failure mechanism of coated biomaterials under high impact-sliding contact stresses |
| title_short |
Failure mechanism of coated biomaterials under high impact-sliding contact stresses |
| title_sort |
failure mechanism of coated biomaterials under high impact sliding contact stresses |
| url |
https://scholar.uwindsor.ca/etd/5099 |
