AI Chat Paper
Note: Please note that the following content is generated by AMiner AI. SciOpen does not take any responsibility related to this content.
{{lang === 'zh_CN' ? '文章概述' : 'Summary'}}
{{lang === 'en_US' ? '中' : 'Eng'}}
Chat more with AI
PDF (3.6 MB)
Collect
Submit Manuscript AI Chat Paper
Show Outline
Outline
Show full outline
Hide outline
Outline
Show full outline
Hide outline
Research Article | Open Access

Role of MgF2 addition on high energy ball milled kalsilite: Implementation as dental porcelain with low temperature frit

Pattem Hemanth KUMARa( )Abhinav SRIVASTAVAaVijay KUMARaNandini JAISWALaPradeep KUMARbVinay Kumar SINGHa
Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, India
Department of Chemical Engineering, Indian Institute of Technology (BHU), Varanasi, India
Show Author Information

Abstract

Porcelain fused to metal (PFM) has received great attention over the last few years due to its importance in the dentistry. Kalsilite (K2O·Al2O3·SiO2) is a high thermal expansion porcelain, suitable for bonding to metals. However, kalsilite is a metastable phase which gets converted into crystalline leucite upon heating. In the current work feasibility of developing stable kalsilite phase, dispersion of MgF2 in it as an additive and using mechanochemical synthesis are studied. Micro fine dental material has been formulated by mixing prepared kalsilite with low temperature frit (LTF) in different ratio. The crystalline phases evolved in fired powders are characterized by powder X-ray diffraction (XRD) technique. Kalsilite with different ratio of LTF has been cold pressed and heat treated to examine its coefficient of thermal expansion (CTE), flexural strength, apparent porosity (AP), bulk density (BD) and microstructure. Results indicate that MgF2 addition and high milling duration help in kalsilite stabilization. Temperature also plays an important role in this stabilization, and at 1100 ℃ single phase kalsilite formation is observed. Present outcomes demonstrate that it is easily possible to synthesize a stable single phase kalsilite with desirable properties.

References

[1]
Andou Y, Kawahara A. The renfinement of the structure of synthetic kalsilite. Mineral J 1984, 12:153-161.
[2]
Ota T, Takebayashi T, Takahashi M, et al. High thermal expansion KAlSiO4 ceramic. J Mater Sci 1996, 31:1431-1433.
[3]
Becerro AI, Escudero A, Mantovani M. The hydrothermal conversion of kaolinite to kalsilite: Influence of time, temperature, and pH. Am Mineral 2009, 94:1672-1678.
[4]
Becerro AI, Mantovani M, Escudero A. Hydrothermal synthesis of kalsilite: A simple and economical method. J Am Ceram Soc 2009, 92:2204-2206.
[5]
Zhang Y, Lv M, Chen D, et al. Leucite crystallization kinetics with kalsilite as a transition phase. Mater Lett 2007, 61:2978-2981.
[6]
Zhang Y, Wu J, Rao P, et al. Low temperature synthesis of high purity leucite. Mater Lett 2006, 60:2819-2823.
[7]
Kopp OC, Harris LA, Clark GW. The hydrothermal conversion of muscovite to kalsilite and an iron-rich mica. Am Mineral 1961, 46:719-727.
[8]
Bogdanoviciene I, Jankeviciute A, Pinkas J, et al. Study of alumposilicate porcelain: Sol–gel preparation, characterization and erosion evaluated by gravimetric method. Mater Res Bull 2008, 43:2998-3007.
[9]
Bogdanoviciene I, Jankeviciute A, Pinkas J, et al. Sol–gel synthesis and characterization of kalsilite-type alumosilicates. Mater Sci 2007, 13:214-218.
[10]
Dimitrijevic R, Dondur V. Synthesis and characterization of KAlSiO4 polymorphs on the SiO2–KAlO2 join. J Solid State Chem 1995, 115:214-224.
[11]
Heller-Kallai L, Lapides I. Thermal reactions of kaolinite with potassium carbonate. J Therm Anal Calorim 2003, 71:689-698.
[12]
Baláž P, Achimovičová M, Baláž M, et al. Hallmarks of mechanochemistry: From nanoparticles to technology. Chem Soc Rev 2013, 42:7571-7637.
[13]
Kumar PH, Srivastava A, Kumar V, et al. Effect of high-energy ball milling and silica fume addition in BaCO3-Al2O3. Part I: Formation of cementing phases. J Am Ceram Soc 2014, .
[14]
Srivastava A, Singh VK, Kumar V, et al. Low cement castable based on auto combustion processed high alumina cement and mechanochemically synthesized cordierite: Formulation and properties. Ceram Int 2014, 40:14061-14072.
Journal of Advanced Ceramics
Pages 332-338
Cite this article:
KUMAR PH, SRIVASTAVA A, KUMAR V, et al. Role of MgF2 addition on high energy ball milled kalsilite: Implementation as dental porcelain with low temperature frit. Journal of Advanced Ceramics, 2014, 3(4): 332-338. https://doi.org/10.1007/s40145-014-0125-x

943

Views

14

Downloads

8

Crossref

N/A

Web of Science

8

Scopus

0

CSCD

Altmetrics

Received: 17 June 2014
Revised: 11 August 2014
Accepted: 18 August 2014
Published: 30 November 2014
© The author(s) 2014

Open Access: This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.

Return