Journal article Open Access

Evaluation the Effect of Trichloroethylene on the Metal-Ceramic Bonding

Baysal, Nurten; Erol, Barış Filiz; Ayyıldız, Simel

Abstract

The aim of the study is to evaluate the effect of trichloroethylene (TCE) on the metal-ceramic bond of additively manufactured and casting Co-Cr alloys. For this purpose, 84 disc-shaped (r=12 mm, h=1 mm) specimens were prepared for two experimental groups (n=42) with different fabrication techniques; casting and additively manufactured with Co-Cr. Before ceramic application, the disc specimens divided into two subgroups (n=21): Casting and cleaned with TCE (CT), casting and not cleaned with TCE (C), additively manufactured and cleaned with TCE (AT), additively manufactured and not cleaned with TCE (A). Ceramic (h=4 mm, r=6 mm) was applied to the disc specimens (n=20) and their shear bond strength (SBS) was measured. The surface morphology of disc (n=1; for each subgroup) specimens before and after TCE application was analyzed with a scanning electron microscope (SEM). Results were statistically analyzed with 1-way ANOVA and the Bonferroni multiple comparisons tests (α=0.05). Significant differences were found in SBS of the CT, C, AT, and A groups. CT group (21.74±1.66 MPa) showed a significantly higher SBS value than the C (18.65±2.11 MPa), AT (19.07±1.75 MPa) and A (18.52±1.94 MPa) groups (p<0.001). In conclusion the application of the TCE increased the metal-ceramic bond of casting Co-Cr alloy. Although the results were not statistically significant the TCE also increased the bond of additively manufactured Co-Cr alloy.

Özet

Çalışmanın amacı trikloroetilenin (TCE) eklemeli ve döküm yöntemleri ile üretilen Co-Cr alaşımlarının metal-seramik arasındaki bağlanmaya olan etkisinin araştırılmasıdır. Bu amaçla, Co-Cr alaşımı kullanılarak döküm ve eklemeli üretim teknikleri ile iki deney grubu (n=42) için 84 adet disk şeklinde (12 mm çapında, 1 mm kalınlığında) örnek elde edildi. Seramik uygulamasına başlamadan önce örnekler iki alt gruba (n=21) ayrıldı: Döküm yöntemi ile üretilip TCE ile temizlenen (CT), döküm yöntemi ile üretilip TCE ile temizlenmeyen (C), eklemeli yöntem ile üretilip TCE ile temizlenen (AT) ve eklemeli yöntem ile üretilip TCE ile temizlenmeyen (A). Sonrasında örneklere (n=20) seramik (h=4 mm, r=6 mm), uygulanıp makaslama bağlanma direnci testi (shear bond strength, SBS) yapıldı. Örnek (n=1; her bir alt grup için) yüzeylerindeki TCE uygulaması öncesi ve sonrası değişim taramalı elektron mikroskobu (SEM) ile incelendi. Sonuçlar istatistiksel olarak 1-way ANOVA ve Bonferroni Çoklu karşılaştırma testleri ile değerlendirildi (α=0.05). CT, C, AT ve A gruplarının SBS değerleri arasında istatistiksel olarak anlamlı farklılıklar bulundu. CT grubunun (21.74±1.66 MPa) SBS değeri, diğer gruplara göre; C (18.65±2.11 MPa), AT (19.07±1.75 MPa), A (18.52±1.94 MPa) anlamlı derecede yüksek bulundu (p<0.001). Sonuç olarak, TCE uygulaması döküm Co-Cr alaşımlarının metal seramik bağlantısını önemli derecede arttırmıştır. İstatistiksel olarak anlamlı olmamakla beraber, TCE uygulaması sonrası eklemeli imalat yöntemi ile üretilen Co-Cr alaşımlarının metal seramik bağlanma direnci de artmıştır.

Trikloroetilenin Metal-Seramik Bağlanmasına Olan Etkisinin Değerlendirilmesi
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