Hydroxyapatite dispersed glass coatings on Co-Cr implant alloys

Hirofumi Tokunaga; Shigeru Fujino

doi:10.2320/jinstmet.69.684

Hydroxyapatite dispersed glass coatings on Co-Cr implant alloys

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

Abstract

Hydroxyapatite dispersed glass coatings on Vitallium®, a cobalt-chromium alloy were prepared using a simple enameling technique. The composition of the bioinert glasses in the SiO ₂-B ₂O ₃-Na ₂O-K ₂O-MgO-Al ₂O ₃-ZrO ₂-TiO ₂ system has been tailored to match the thermal expansion of the alloys. The optimum glass composition and firing conditions (temperature and time) needed to fabricate homogeneous coatings with good adhesion to the alloy were determined. The final coating thickness ranged between 40 to 60 μm. Coatings fired under the optimum conditions do not delaminate during indentation tests of adhesion. Excellent adhesion to the alloy has been achieved through the formation of 200 nm thick interfacial layers (CrO _x. X-ray diffraction patterns for the hydroxyapatite dispersed on the glass surface showed a strong preferred orientation of the (0 0 2) plane when immersed in a simulated body fluid (SBF).

Original language	English
Pages (from-to)	684-690
Number of pages	7
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	69
Issue number	8
DOIs	https://doi.org/10.2320/jinstmet.69.684
Publication status	Published - Aug 2005

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

Access to Document

10.2320/jinstmet.69.684

Fingerprint Dive into the research topics of 'Hydroxyapatite dispersed glass coatings on Co-Cr implant alloys'. Together they form a unique fingerprint.

Cite this

@article{561248877db4405aafd3234feb45a4ce,

title = "Hydroxyapatite dispersed glass coatings on Co-Cr implant alloys",

abstract = "Hydroxyapatite dispersed glass coatings on Vitallium{\textregistered}, a cobalt-chromium alloy were prepared using a simple enameling technique. The composition of the bioinert glasses in the SiO 2-B 2O 3-Na 2O-K 2O-MgO-Al 2O 3-ZrO 2-TiO 2 system has been tailored to match the thermal expansion of the alloys. The optimum glass composition and firing conditions (temperature and time) needed to fabricate homogeneous coatings with good adhesion to the alloy were determined. The final coating thickness ranged between 40 to 60 μm. Coatings fired under the optimum conditions do not delaminate during indentation tests of adhesion. Excellent adhesion to the alloy has been achieved through the formation of 200 nm thick interfacial layers (CrO x. X-ray diffraction patterns for the hydroxyapatite dispersed on the glass surface showed a strong preferred orientation of the (0 0 2) plane when immersed in a simulated body fluid (SBF).",

author = "Hirofumi Tokunaga and Shigeru Fujino",

year = "2005",

month = aug,

doi = "10.2320/jinstmet.69.684",

language = "English",

volume = "69",

pages = "684--690",

journal = "Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals",

issn = "0021-4876",

publisher = "公益社団法人日本金属学会",

number = "8",

}

TY - JOUR

T1 - Hydroxyapatite dispersed glass coatings on Co-Cr implant alloys

AU - Tokunaga, Hirofumi

AU - Fujino, Shigeru

PY - 2005/8

Y1 - 2005/8

N2 - Hydroxyapatite dispersed glass coatings on Vitallium®, a cobalt-chromium alloy were prepared using a simple enameling technique. The composition of the bioinert glasses in the SiO 2-B 2O 3-Na 2O-K 2O-MgO-Al 2O 3-ZrO 2-TiO 2 system has been tailored to match the thermal expansion of the alloys. The optimum glass composition and firing conditions (temperature and time) needed to fabricate homogeneous coatings with good adhesion to the alloy were determined. The final coating thickness ranged between 40 to 60 μm. Coatings fired under the optimum conditions do not delaminate during indentation tests of adhesion. Excellent adhesion to the alloy has been achieved through the formation of 200 nm thick interfacial layers (CrO x. X-ray diffraction patterns for the hydroxyapatite dispersed on the glass surface showed a strong preferred orientation of the (0 0 2) plane when immersed in a simulated body fluid (SBF).

AB - Hydroxyapatite dispersed glass coatings on Vitallium®, a cobalt-chromium alloy were prepared using a simple enameling technique. The composition of the bioinert glasses in the SiO 2-B 2O 3-Na 2O-K 2O-MgO-Al 2O 3-ZrO 2-TiO 2 system has been tailored to match the thermal expansion of the alloys. The optimum glass composition and firing conditions (temperature and time) needed to fabricate homogeneous coatings with good adhesion to the alloy were determined. The final coating thickness ranged between 40 to 60 μm. Coatings fired under the optimum conditions do not delaminate during indentation tests of adhesion. Excellent adhesion to the alloy has been achieved through the formation of 200 nm thick interfacial layers (CrO x. X-ray diffraction patterns for the hydroxyapatite dispersed on the glass surface showed a strong preferred orientation of the (0 0 2) plane when immersed in a simulated body fluid (SBF).

UR - http://www.scopus.com/inward/record.url?scp=26944468296&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=26944468296&partnerID=8YFLogxK

U2 - 10.2320/jinstmet.69.684

DO - 10.2320/jinstmet.69.684

M3 - Article

AN - SCOPUS:26944468296

VL - 69

SP - 684

EP - 690

JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals

JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals

SN - 0021-4876

IS - 8

ER -