The Surface Condition of Ni-Cr after SiC Abrasive Blasting for Applications in Ceramic Restorations

Czepułkowska-Pawlak, Weronika; Wołowiec‐Korecka, Emilia; Klimek, L.

doi:10.3390/ma13245824

Cited by 4 publications

(4 citation statements)

References 20 publications

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“…The highest strength values were obtained for the abrasive group blasted with 50 µm grain size at a pressure of 400 kPa. This is a new observation concerning research work on an Al 2 O 3 abrasive [ 4 , 5 , 10 , 24 ]. Pietnicki et al report that the optimum shear strength of the Co-Cr alloy and dental ceramics joint is provided after pre-treatment with an Al 2 O 3 abrasive with a 110 µm grit size at a pressure of 400 kPa [ 4 ].…”

Section: Discussionmentioning

confidence: 99%

“…Numerous studies have reported that the parameters used in abrasive blasting have different effects on the surface of metals used in prosthetics and on the strength of the metal-ceramic joint [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. For titanium and cobalt-chromium alloys, the parameters that provide the best bond strength values include 110 µm aluminium oxide and a treatment pressure of 400 kPa [ 4 , 5 ], which contradicts the hypothesis that the higher the abrasive blasting parameters, the better the bond strength.…”

Section: Introductionmentioning

confidence: 99%

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Effect of SiC Abrasive Blasting Parameters on the Quality of the Ceramic and Ni-Cr Dental Alloy Joint

et al. 2022

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The SiC abrasive blasting parameters are vital in ensuring a suitable bond between dental ceramics and the Ni-Cr alloy. The purpose of this in vitro test was to examine the strength of the joint between the Ni-Cr alloy and fused dental ceramics for SiC abrasive blasting at a specific pressure (400, 600 kPa) and particle size (50, 110, 250 µm) in order to determine the optimal treatment parameters. The test also accounted for thermal loads (5000 cycles, 5–55 °C) to which the metal-ceramic joint is subjected during use. One hundred and forty-four Ni-Cr cylinders were divided into six groups (n = 12) and subjected to the airborne-particle abrasion with SiC with various pressure and grit size parameters. After treatment, the specimens were rinsed, dried, fused to dental ceramics, and examined for their shear strength using the Zwick/Roell Z020 machine. The results were statistically analysed using the ANOVA analysis of variance (α = 0.05). The highest metal-ceramic joint strength was obtained for abrasive blasting with 110 and 250 µm SiC grit at a pressure of 400 kPa. This relationship was also observed after the joint was subjected to thermal loads (5000 thermocycles). Additionally, thermal loads did not significantly reduce the joint’s strength compared with non-loaded joints. For small SiC abrasive grit sizes (50 µm) under pressure 400 kPa, the treatment pressure had a significant effect on the strength of the joint (p < 0.05). For larger particle sizes, the pressure had no effect. After abrasive blasting using SiC, the Ni-Cr metal-ceramic joint retained its properties, even under thermal load, ensuring the joint properties’ stability during use.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of SiC Abrasive Blasting Parameters on the Quality of the Ceramic and Ni-Cr Dental Alloy Joint

et al. 2022

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“…Size of abrasive particles and parameters used during sandblasting define the quality of the whole process. [9] Similar thing happens with structural ceramics which have tendency to replace metallic dental prostheses. Kim and Ahn researched influence of particle size of sandblasting abrasives on surface roughness of zirconia.…”

Section: Introductionmentioning

confidence: 88%

Tribological Investigation of the Automotive Grade Aluminium Alloy With Epoxy Primer Coating

Kotorcevic

Busarac

Nježić

et al. 2022

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Mechanical surface preparation is a common technique for removing contaminants from surface metal layers. Unlike chemical preparation, it does not require special safety measures, including those for disposal of by-products or toxic materials, thus making it more accessible for different industries. We investigated tribological testing as the experimental method to determine the quality of the coating and the influence of the initial mechanical surface treatment. Samples were made of aluminium alloy EN AW 5083 H111 that was shot blasted with white cast aluminium with resulting surface roughness of Rz=38.908 μm. Samples were further coated with Lankwitzer EvoCor 164 2-component epoxy primer. Tribological test realised on nanotribometer is described and output parameters have been analysed: friction coefficient and penetration depth. Ball-on-flat, dry contact tribological setup was used, with 100 mN normal load, under linear reciprocating motion. Dynamic friction coefficient and penetration depth curves during one tribological test were analysed indicating the moment when the coating exhibited first failure. The test has shown that tribological tests with low loads can be used for quality testing of thin coatings, including the influence of the mechanical surface preparation on the coating adhesion.

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“…Numerous studies have indicated that parameters used in abrasive blasting differently affect the surface of metals used in prosthetics and the strength of the metal–ceramic joint [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. According to Gołębiowski and Pietnicki, treatment with 110 μm aluminum oxide under a pressure of 400 kPa provides the best bond strength values for titanium and cobalt–chromium alloys [ 8 , 9 ], which contradicts the hypothesis that the higher the abrasive blasting parameters, the better the bond strength [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Quality of the Ceramic and Ni-Cr Alloy Joint after Al2O3 Abrasive Blasting

et al. 2023

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The purpose of this in vitro study was to determine the effect of airborne-particle abrasion process parameters on the strength of the Ni-Cr alloy–ceramic bond. One hundred and forty-four Ni-Cr disks were airborne-particle abraded with 50, 110 and 250 µm Al2O3 at a pressure of 400 and 600 kPa. After treatment, the specimens were bonded to dental ceramics by firing. The strength of the metal–ceramic bond was determined using the shear strength test. The results were analyzed with three-way analysis of variance (ANOVA) and the Tukey honest significant difference (HSD) test (α = 0.05). The examination also considered the thermal loads (5000 cycles, 5–55 °C) to which the metal–ceramic joint is subjected during exploitation. There is a close correlation between the strength of the Ni-Cr alloy–dental ceramic joint and the alloy roughness parameters after abrasive blasting: Rpk (reduced peak height), Rsm (the mean spacing of irregularities), Rsk (skewness of the profile) and RPc (peak density). The highest strength of the Ni-Cr alloy surface bonding with dental ceramics under operating conditions is provided by abrasive blasting under 600 kPa pressure with 110 µm Al2O3 particles (p < 0.05). Both the abrasive blasting pressure and the particle size of the Al2O3 abrasive significantly affect the joint’s strength (p < 0.05). The most optimal blasting parameters are 600 kPa pressure with 110 µm Al2O3 particles (p < 0.05). They allow the highest bond strength between the Ni-Cr alloy and dental ceramics to be achieved.

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The Surface Condition of Ni-Cr after SiC Abrasive Blasting for Applications in Ceramic Restorations

Cited by 4 publications

References 20 publications

Effect of SiC Abrasive Blasting Parameters on the Quality of the Ceramic and Ni-Cr Dental Alloy Joint

Effect of SiC Abrasive Blasting Parameters on the Quality of the Ceramic and Ni-Cr Dental Alloy Joint

Tribological Investigation of the Automotive Grade Aluminium Alloy With Epoxy Primer Coating

Quality of the Ceramic and Ni-Cr Alloy Joint after Al2O3 Abrasive Blasting

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