Determination of Peeling Plane of the Fused Porcelain to Titanium

Miura, Eri; Liu, Jie; Watanabe, Ikuya; Tanaka, Yasuhiro; Shiraishi, Takashi; Hisatsune, Kazuhito

doi:10.2320/jinstmet1952.65.9_819

Cited by 9 publications

(10 citation statements)

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“…It was supposed to be because of exfoliation of Au layer due to difference of thermal expansion coefficient between Ti and porcelain or due to thermal stress during firing. 10) In this study, D1 layer was formed on the A1 layer. These results suggest degassing treatment increases not only bonding strength between Ti and porcelain, but also affinity of Ti-Au bonding.…”

Section: Effect Of Degassing Treatment Of Titaniummentioning

confidence: 93%

“…14,16) In our previous study, 10) after three times firing process of Ti/ Au/porcelain without degassing, reaction layers were formed between Ti substrate and Au coating. On the other hand, reaction layers were formed beyond the Au coating layer when degassing treatment was performed.…”

Section: Effect Of Degassing Treatment Of Titaniummentioning

confidence: 95%

“…1) Especially, Ti diffusion to porcelain and reaction with O was prominent. In our previous study, 10) we approached determination of peeling plane at the interface through the method of insertion of Au ion-coating maker into the Ti/porcelain interface. From the results of the study, Ti-concentrated interaction layer formed at the porcelain side, and it was indicated that exfoliation arose there.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Gold Coating on Interfacial Reaction between Dental Porcelain and Titanium

et al. 2004

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Cross-sectional microstructure observation of the titanium firing porcelain inserted ion-coated gold layer was performed by SEM-EDX that can analyze light elements from boron. Two gold-coated samples applied to mirror finished titanium surface were prepared; one was applied only degassing treatment, and the other was applied firing after degassing treatment. In addition, in order to investigate effect of the gold coating, titanium/porcelain samples without coating were also observed. From SEM-EDX observation of the specimen, approximately 2.5 mm thickness titanium oxide layer appeared across the gold film in the first sample. In the titanium firing porcelain after degassing treatment, two obvious reaction layers appeared across the gold coating. One included mainly titanium and oxygen, and another included titanium, gold and aluminum. Thickness of the reaction layers was approximately 2.5-3 mm. From the results, it is suggested titanium was diffused into porcelain through a gold coating, and titanium oxide was formed at an interface. Titanium/porcelain without gold coating had two reaction layers at the interface, however, many cracks and crevices were exhibited in the layer and between the layers. Effect of gold coating on interfacial layer formation was discussed by the comparison with titanium/porcelain interface without gold coating. Thickness of the reaction layers decreased by gold coating, and cracks and crevices in the layer disappeared. The results suggested that oxygen diffusion became lower due to existence of the coating, and titanium-gold reaction changed layer's microstructure. It is also suggested that gold diffusion into the reaction layer and restriction of oxygen diffusion contribute to the reaction layer formation, consequently gold coating on titanium substrate contributes to improvement of adhesion between titanium and porcelain.

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Section: Effect Of Degassing Treatment Of Titaniummentioning

confidence: 93%

Section: Effect Of Degassing Treatment Of Titaniummentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Effect of Gold Coating on Interfacial Reaction between Dental Porcelain and Titanium

et al. 2004

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“…Other factors include nodule growth and residual stress. 1,2) The authors are presently involved in research to elucidate the factors controlling the crystallographic orientation of various electrodeposited films through a systematic investigation of fcc Ag, 3,4) Cu, 5,6) Pt, 7) and Ni, [8][9][10] bcc Cr, 11) and hcp Co, 12) Zn 13) and Cd. 14) In this study, the authors have characterized electrodeposited Fe(bcc) films in order to advance the development of a theory on how the structure of electrodeposited films might be controlled.…”

Section: Introductionmentioning

confidence: 99%

Surface Morphology and Crystallographic Orientation of Electrodeposited Iron Films

2002

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The crystallographic structure and surface morphology of Fe films electrodeposited from three kinds of baths, sulfate, chloride and sulfamate baths, were studied by SEM, XRD. The surface morphology and crystallographic orientation of Fe films deposited on a Ni-P amorphous substrate were varied with electrodeposition bath composition and conditions. The {211} plane appeared to be mainly a preferential orientation of films deposited from all baths examined in this study.

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“…However, they are inferior from an esthetic point of view. For example, a ceramic-fused metallic core crown is commonly used to cover the core s metallic color; however, exfoliation of the ceramic surface from the metallic core is a serious clinical problem in dentistry 1,2) . Thus, in the eld of dental prostheses, discoveries of white-colored materials with high ductility, high strength, and excellent aesthetic properties are quite highly desired.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of TiO2/SiO2 Composite Coating via a High-Temperature Self-Organizing Microporous TiO2 Layer on Ti

et al. 2016

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We studied the fabrication of a TiO 2 /SiO 2 composite coating on Ti. At a temperature above 1100 K with oxygen partial pressure, a self-organized coating of rutile phase TiO 2 is formed on a Ti substrate. The thick TiO 2 coating (> 10 μm) had a piecrust-like multilayer structure, which comprise TiO 2 monolayers and gaps. A composite coating containing SiO 2 was fabricated via a sol-gel method in vacuum to improve the exfoliation strength of the brittle, porous TiO 2 coating. Cross-sectional SEM images revealed suf cient amounts of SiO 2 in the gaps between the TiO 2 monolayers in the TiO 2 /SiO 2 composite coating, even at the interface between the oxide coating and the substrate. Exfoliation stress of the composite coating was up to 10-15 times higher than for the self-organized TiO 2 coating alone, and the composite coating s failure mode was interfacial compared with cohesive for the self-organized TiO 2 coating.

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Determination of Peeling Plane of the Fused Porcelain to Titanium

Cited by 9 publications

References 0 publications

Effect of Gold Coating on Interfacial Reaction between Dental Porcelain and Titanium

Effect of Gold Coating on Interfacial Reaction between Dental Porcelain and Titanium

Surface Morphology and Crystallographic Orientation of Electrodeposited Iron Films

Fabrication of TiO<sub>2</sub>/SiO<sub>2</sub> Composite Coating via a High-Temperature Self-Organizing Microporous TiO<sub>2</sub> Layer on Ti

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