Defects-tolerant Co-Cr-Mo dental alloys prepared by selective laser melting

Qian, Bin; Saeidi, Kamran; Kvetková, Lenka; Lofaj, František; Chen, Xiao; Shen, Zhijian

doi:10.1016/j.dental.2015.09.003

Cited by 156 publications

(74 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The recommended mechanical properties for the CoCr alloys for fixed and removable dental restorations and appliances are reflected in the ISO 22674 [31]. Few studies compared the mechanical properties of cast, milled and AM alloys used for dental purposes [32][33][34]. In 2014, Al Jabbari et al [32] evaluated the hardness and microstructural characterization of the CoCr dental alloys manufactured using casting, milling or SLM techniques where significant differences were noted in hardness values being the highest for SLM (371±10 HV), followed by the cast (320±12 HV) and milled (297±5 HV) procedures.…”

Section: Mechanical Properties Of 3d Printed Metalsmentioning

confidence: 99%

“…Such internal residual stress could generate high strain and thereby affects the accuracy [36,37]. One solution to circumvent this problem is the employment of heat treatment after printing the metal that could at the same time change the micro-structure [34,38].…”

Section: Mechanical Properties Of 3d Printed Metalsmentioning

confidence: 99%

“…Nevertheless, the reduction in porosity in CoCr alloys fabricated through AM technologies, has a positive effect on the mechanical properties of the printed object [34] through which higher yield and tensile strength of the cast alloys could be obtained [39]. Corrosion resistance of CoCr SLM specimens on the other hand, appears to remain similar to that of the conventional casting processing [40][41][42].…”

Section: Mechanical Properties Of 3d Printed Metalsmentioning

confidence: 99%

See 2 more Smart Citations

Additive Manufacturing Technologies Used for 3D Metal Printing in Dentistry

Revilla‐León

Özcan

2017

Curr Oral Health Rep

View full text Add to dashboard Cite

Purpose of ReviewCompared to conventional casting methods used for processing different alloys for dental applications, additive manufacturing technologies reduce manufacturing time and costs, minimize human errors and prevent possible defects in the cast objects. This review highlights working mechanisms, possible advantages and drawbacks of recent additive manufacturing technologies used for metal processing in dentistry. Recent FindingsThe literature reviewed indicated that powder-based fusion mainly based on selective laser sintering, selective laser melting and electro beam melting are the most commonly used technologies for 3D metal printing in dentistry for dental appliances made of CoCr and Ti6Al4V. Although mechanical properties of 3D printed alloys could be considered satisfactory, accuracy and reproducibility data do not present consistent results. SummaryThere appears room for improvement between 3D printed metals and ceramic interfaces and precision before such technologies could be favoured over conventional cast methods. AbstractPurpose of Review: Compared to conventional casting methods used for processing different alloys for dental applications, additive manufacturing technologies reduce manufacturing time and costs, minimize human errors and prevent possible defects in the cast objects. This review highlights working mechanisms, possible advantages and drawbacks of recent additive manufacturing technologies used for metal processing in dentistry. Recent Findings: The literature reviewed indicated that powder based fusion mainly based on selective laser sintering, selective laser melting and electro beam melting are the most commonly used technologies for 3D metal printing in dentistry for dental appliances made of CoCr and Ti6Al4V. Although mechanical properties of 3D printed alloys could be considered satisfactory, accuracy and reproducibility data do not present consistent results. Summary: There appears room for improvement between 3D printed metals and ceramic interfaces and precision before such technologies could be favoured over conventional cast methods.

show abstract

Section: Mechanical Properties Of 3d Printed Metalsmentioning

confidence: 99%

Section: Mechanical Properties Of 3d Printed Metalsmentioning

confidence: 99%

Section: Mechanical Properties Of 3d Printed Metalsmentioning

confidence: 99%

See 1 more Smart Citation

Additive Manufacturing Technologies Used for 3D Metal Printing in Dentistry

Revilla‐León

Özcan

2017

Curr Oral Health Rep

View full text Add to dashboard Cite

show abstract

“…If a generalization is made about the chemical compositions of Co-Cr metal powders produced by the additive manufacturing production method, the contribution of powders used in the manufacturing companies and academic publications by weight in the alloy was found to be as follows [19][20][21][22]. 58<=Co <= 64.00, 24<= Cr <=33, 4<=W <= 9, 1<= Si <= 3, 3<= Mo <=6 [18].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Icrostructure, Mechanical and Temperature Effects on Biomedical Co-25Cr-9,5W-3,5Mo-1Si Alloys Fabricated by Additive Manufacturing

Aygul¹,

Yalçinkaya²,

Şahin³

2019

Preprint

View full text Add to dashboard Cite

The Wolfram (W), Silicium (Si) and Molybdenum (Mo) doped Co-Cr biomedical alloy were fabricated by additive manufacturing method, which is part of powder metadology. The mixture of Wolfram (W), Silicium (Si), Chrome (Cr) and Cobalt (Co) alloy is known good wear and corrosion resistance among of biomedical applications. By addition of Molybdenum (Mo) into the structure of alloy, the structure become more stbale also increase the corrosion and wear resistance. In addition, the effects of secondary annealing process on the alloy were investigated. The microstructure of the produced alloy was analyzed by X-ray diffraction method XRD, Energy Dispersive X-Ray Analysis EDX and scanning electron microscope SEM. Moreover, Electrochemical corrosion test, micro hardness and density measurements were performed to investigate the mechanical properties of the alloy. As a result of the analyzes, the effects of Molydenum (Mo) doped and secondary annealing on the microstructure and mechanical properties of bioalloying were determined.

show abstract

“…Second-phase particles with a size of <10 μm were found to effectively improve CoCrMo alloy mechanical properties [10] .…”

Section: Introductionmentioning

confidence: 99%

Effects of Al<sub>2</sub>O<sub>3</sub> Addition on the Microstructure and Properties of CoCr Alloys

Qiu¹,

Bai²,

Wang³

2019

Preprint

View full text Add to dashboard Cite

In typical Cobalt-chromium (CoCr) alloys powders, aluminum oxide (Al2O3) powder can be added. In the present study, we successfully prepared alloyed samples of various powder ratios by laser cladding, and analyzed their microstructure and carbide structural characteristics, including microhardness, biological properties, morphology (using scanning electron microscopy), and crystal structure (using X-ray powder diffraction). Elemental distribution was also determined by energy-dispersive X-ray spectral analysis. The results showed that Al2O3 addition caused the alloy to change from slender columnar crystals to columnar grains similar, to equiaxed grains. In addition, Al2O3 agglomeration zones appeared, and carbide structures were altered. The mechanism of the observed performance changes was also analyzed.

show abstract

Defects-tolerant Co-Cr-Mo dental alloys prepared by selective laser melting

Cited by 156 publications

References 21 publications

Additive Manufacturing Technologies Used for 3D Metal Printing in Dentistry

Additive Manufacturing Technologies Used for 3D Metal Printing in Dentistry

Investigation of Icrostructure, Mechanical and Temperature Effects on Biomedical Co-25Cr-9,5W-3,5Mo-1Si Alloys Fabricated by Additive Manufacturing

Effects of Al<sub>2</sub>O<sub>3</sub> Addition on the Microstructure and Properties of CoCr Alloys

Contact Info

Product

Resources

About