2024-03-29T02:16:26Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00007343
2023-01-16T03:52:48Z
320:321:322
Improvement in Performance of Bio-Adaptive Coating by Using Chemical Bonding
化学結合を援用した生体適合性被膜性能の向上
森, 敏彦
20322
MORI, Toshihiko
20323
広田, 健治
20324
HIROTA, Kenji
20325
助田, 直史
20326
SUKEDA, Naofumi
20327
中屋, 壮平
20328
NAKAYA, Sohei
20329
Spraying
Coating
Surface Treatment
Implant
Hydroxyapatite
Titanium
Self-deposition
Roughness
Demands of medical implants such as artificial hones increase as an aged society is coming. A medical implant can be substituted for original tissue only when it satisfies both mechanical properties and biocompatibility. Since such material is not found in nature, hybrid materials are promising and have been developed. In the previous paper, coatings of hydroxyapatite (HA) were deposited on titanium substrate by graded plasma spraying, but the properties of obtained coatings were inferior to those of bone. In this paper, two successive processes were conducted as a grounding of spraying. First stage is a formation of titanium compound which is processed chemically to titanium by NaOH and have high adhensive strength to both titanium and HA. Second stage is HA coatings self-deposited by dipping titanium in Ringer's solution. On these films, 50 μm thickness coating of HA was carried out by plasma spraying in vacuum chamber. It was clarified through the observation of self-deposited surface with SEM and AFM that increase of self-deposit time resulted in improvement of adhensive strength. Self-deposited surface becomes rough in microscopic order but keeps smoothness in mesoscopic, when self-deposited particles of HA grow and cover over the substrate surface. Such surface is easy to bond the sprayed particles by anchor effect as well as chemical affinity and results in increase in adhensive strength.
journal article
日本機械学会
2003-05
application/pdf
日本機械学會論文集 C編
681
69
1456
1461
http://hdl.handle.net/2237/9024
0387-5024
https://nagoya.repo.nii.ac.jp/record/7343/files/JsMecEngC_69-681-1456.pdf
jpn
http://ci.nii.ac.jp/naid/110002379016/
日本機械学会
本文データは学協会の許諾に基づきCiNiiから複製したものである。