Bioactivity of titanium-based bulk metallic glass surfaces via hydrothermal hot-pressing treatment

Abstract

Apatite forming and hydroxyapatite ceramics bonding ability of titanium (Ti)-based bulk metallic glasses (Ti 40 Zr 10 Cu 36 Pd 14 and (Ti 0.40 Zr 0.10 Cu 0.36 Pd 0.14 ) 99 Ca 1 : BMGs) were investigated as a new type of biomaterials. Powder mixture of CaHPO 4 ･2H 2 O and Ca(OH) 2 and the BMGs disks were treated with autoclave for hydrothermal hot-pressing (HHP) simultaneously (150°C, 40 MPa, 2hours). Direct bonding hydroxyapatite ceramics and both type of BMGs could not be achieved. And then, the BMGs disks with the HHP treatment were soaked in simulated body fluid for 7-10 days. It was observed that apatite are deposited and covered on the surface of the BMGs with the HHP treatment. It was firstly demonstrated that surfaces of Ti based bulk metallic glasses can be made bioactive and that HHP techniques were useful methods in purpose of making Ti-based bulk metallic glass surface bioactive.

Recent Progress in Ti-Based Metallic Glasses for Application as Biomaterials

“…103) The formation and growth rate of bone-like apatite on metallic implants in SBF before implant are usually regarded as a criterion in evaluating bioactivity of metallic implants. Therefore, the most important factor before the Ti-based BMGs are implanted is to succeed in growing bone-like apatite or similar calcium phosphate layer on Tibased BMGs.…”

Porous Apatite Coating on Various Titanium Metallic Materials via Low Temperature Processing

“…In our previous reports, we have proposed a HHP method for bonding HA ceramics and pure Ti, Ti alloys, Magnesium alloy, and Ti based bulk metallic glass by hydrothermal hotpressing techniques [Onoki et al, 2003a[Onoki et al, , 2003b[Onoki et al, , 2005[Onoki et al, , 2006[Onoki et al, , 2008a[Onoki et al, , 2008b[Onoki et al, 2009a[Onoki et al, , 2009b[Onoki et al, , 2010a[Onoki et al, , 2010b[Onoki et al, , 2010c[Onoki et al, , 2011.…”

Bioactivity of a Ni-Free Ti-Based Metallic Glass

“…6) Some apatite particles were deposited only physically and covered on the surface of Ti-based BMGs with hydrothermal hot-pressing treatment. 7) The formation and growth rate of bone-like apatite on metallic implants in SBF before implant are usually regarded as a criterion in evaluating bioactivity of metallic implants. Therefore, the most important factor before the Ti-based BMGs are implanted is to succeed in growing bone-like apatite or similar calcium phosphate layer on Ti-based BMGs.…”