Fabrication of Brushite Coating on AZ91D and AZ31 Alloys by Two-Step Chemical Treatment and Its Surface Protection in Simulated Body Fluid

Y. Sasikumar; A. Madhan Kumar; R. Suresh Babu; P. Dhaiveegan; N. Al-Aqeeli; Ana L.F. de Barros

doi:10.1007/s11665-019-04143-7

Fabrication of Brushite Coating on AZ91D and AZ31 Alloys by Two-Step Chemical Treatment and Its Surface Protection in Simulated Body Fluid

Y. Sasikumar, A. Madhan Kumar^*, R. Suresh Babu, P. Dhaiveegan, N. Al-Aqeeli, Ana L.F. de Barros

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

A biocompatible dicalcium phosphate dihydrate (DCPD) brushite coating of flake-like crystals was developed on AZ91D and AZ31 magnesium (Mg) surfaces to control and slow down the rapid degradation rate of the substrates. The electrochemical behavior of the DCPD-coated substrates was examined in a simulated body fluid (SBF) with uncoated substrates as the control. Fabrication of the coating was achieved via chemical immersion technique by modifying the surfaces with Ca(NO₃)₂·4H₂O and KH₂PO₄ in addition to heat treatment. The morphology of the DCPD coating is uniform and dense with a flake-like crystal structure. After in vitro tests, the DCPD coating would have exhibited excellent corrosion resistance with more biomineralization of the active calcium phosphate (CaP). Moreover, the DCPD coating induced CaP formation after immersion in the SBF, indicating excellent bioactivity upon increasing the coating. Hence, the two-step chemical treatment enhances the bioactivity of DCPD coatings on Mg alloys, making them better implant materials.

Original language	English
Pages (from-to)	3803-3815
Number of pages	13
Journal	Journal of Materials Engineering and Performance
Volume	28
Issue number	6
DOIs	https://doi.org/10.1007/s11665-019-04143-7
State	Published - 15 Jun 2019

Bibliographical note

Publisher Copyright:
© 2019, ASM International.

Keywords

DCPD
Mg alloys
SBF
biocompatibility
coating

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1007/s11665-019-04143-7

Cite this

@article{41f0dbf60b6a4f92b5bc6594a606b425,

title = "Fabrication of Brushite Coating on AZ91D and AZ31 Alloys by Two-Step Chemical Treatment and Its Surface Protection in Simulated Body Fluid",

abstract = "A biocompatible dicalcium phosphate dihydrate (DCPD) brushite coating of flake-like crystals was developed on AZ91D and AZ31 magnesium (Mg) surfaces to control and slow down the rapid degradation rate of the substrates. The electrochemical behavior of the DCPD-coated substrates was examined in a simulated body fluid (SBF) with uncoated substrates as the control. Fabrication of the coating was achieved via chemical immersion technique by modifying the surfaces with Ca(NO3)2·4H2O and KH2PO4 in addition to heat treatment. The morphology of the DCPD coating is uniform and dense with a flake-like crystal structure. After in vitro tests, the DCPD coating would have exhibited excellent corrosion resistance with more biomineralization of the active calcium phosphate (CaP). Moreover, the DCPD coating induced CaP formation after immersion in the SBF, indicating excellent bioactivity upon increasing the coating. Hence, the two-step chemical treatment enhances the bioactivity of DCPD coatings on Mg alloys, making them better implant materials.",

keywords = "DCPD, Mg alloys, SBF, biocompatibility, coating",

author = "Y. Sasikumar and Kumar, \{A. Madhan\} and \{Suresh Babu\}, R. and P. Dhaiveegan and N. Al-Aqeeli and \{de Barros\}, \{Ana L.F.\}",

note = "Publisher Copyright: {\textcopyright} 2019, ASM International.",

year = "2019",

month = jun,

day = "15",

doi = "10.1007/s11665-019-04143-7",

language = "English",

volume = "28",

pages = "3803--3815",

journal = "Journal of Materials Engineering and Performance",

issn = "1059-9495",

publisher = "Springer New York",

number = "6",

}

TY - JOUR

T1 - Fabrication of Brushite Coating on AZ91D and AZ31 Alloys by Two-Step Chemical Treatment and Its Surface Protection in Simulated Body Fluid

AU - Sasikumar, Y.

AU - Kumar, A. Madhan

AU - Suresh Babu, R.

AU - Dhaiveegan, P.

AU - Al-Aqeeli, N.

AU - de Barros, Ana L.F.

PY - 2019/6/15

Y1 - 2019/6/15

N2 - A biocompatible dicalcium phosphate dihydrate (DCPD) brushite coating of flake-like crystals was developed on AZ91D and AZ31 magnesium (Mg) surfaces to control and slow down the rapid degradation rate of the substrates. The electrochemical behavior of the DCPD-coated substrates was examined in a simulated body fluid (SBF) with uncoated substrates as the control. Fabrication of the coating was achieved via chemical immersion technique by modifying the surfaces with Ca(NO3)2·4H2O and KH2PO4 in addition to heat treatment. The morphology of the DCPD coating is uniform and dense with a flake-like crystal structure. After in vitro tests, the DCPD coating would have exhibited excellent corrosion resistance with more biomineralization of the active calcium phosphate (CaP). Moreover, the DCPD coating induced CaP formation after immersion in the SBF, indicating excellent bioactivity upon increasing the coating. Hence, the two-step chemical treatment enhances the bioactivity of DCPD coatings on Mg alloys, making them better implant materials.

AB - A biocompatible dicalcium phosphate dihydrate (DCPD) brushite coating of flake-like crystals was developed on AZ91D and AZ31 magnesium (Mg) surfaces to control and slow down the rapid degradation rate of the substrates. The electrochemical behavior of the DCPD-coated substrates was examined in a simulated body fluid (SBF) with uncoated substrates as the control. Fabrication of the coating was achieved via chemical immersion technique by modifying the surfaces with Ca(NO3)2·4H2O and KH2PO4 in addition to heat treatment. The morphology of the DCPD coating is uniform and dense with a flake-like crystal structure. After in vitro tests, the DCPD coating would have exhibited excellent corrosion resistance with more biomineralization of the active calcium phosphate (CaP). Moreover, the DCPD coating induced CaP formation after immersion in the SBF, indicating excellent bioactivity upon increasing the coating. Hence, the two-step chemical treatment enhances the bioactivity of DCPD coatings on Mg alloys, making them better implant materials.

KW - DCPD

KW - Mg alloys

KW - SBF

KW - biocompatibility

KW - coating

UR - http://www.scopus.com/inward/record.url?scp=85067648765&partnerID=8YFLogxK

U2 - 10.1007/s11665-019-04143-7

DO - 10.1007/s11665-019-04143-7

M3 - Article

AN - SCOPUS:85067648765

SN - 1059-9495

VL - 28

SP - 3803

EP - 3815

JO - Journal of Materials Engineering and Performance

JF - Journal of Materials Engineering and Performance

IS - 6

ER -

Fabrication of Brushite Coating on AZ91D and AZ31 Alloys by Two-Step Chemical Treatment and Its Surface Protection in Simulated Body Fluid

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this