Significant improvement of corrosion resistance of biodegradable metallic implants processed by laser shock peening

被引：76

作者：

Guo, Yuebin ^{[1
]}

Sealy, Michael P. ^{[1
]}

Guo, Changsheng ^{[2
]}

机构：

[1] Univ Alabama, Dept Mech Engn, Tuscaloosa, AL 35487 USA

[2] United Technol Res Ctr, E Hartford, CT 06118 USA

来源：

CIRP ANNALS-MANUFACTURING TECHNOLOGY | 2012年 / 61卷 / 01期

基金：

美国国家科学基金会;

关键词：

Surface integrity; Laser; Corrosion; MACHINING PROCESSES; MAGNESIUM; ALLOYS; SURFACE;

D O I：

10.1016/j.cirp.2012.03.125

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Biodegradable magnesium-calcium alloys are attractive new orthopedic biomaterials compared to conventional permanent implant alloys. However, magnesium-calcium alloys corrode too fast in human body fluids. This study explores the process capability of laser shock peening (LSP) to control the corrosion of magnesium-calcium implants by tailoring the surface integrity. LSP induced unique surface topographies, highly compressive residual stresses, and extended strain hardening significantly enhanced the corrosion resistance of the alloy by more than 100-fold in simulated body fluid. Furthermore, corrosion of the peened implants was controllable by varying the laser power and peening overlap ratio. (C) 2012 CIRP.

引用

页码：583 / 586

页数：4

共 12 条

[1] Chemical aspects of machining processes [J].

Brinksmeier, E ;

Lucca, DA ;

Walter, A .

CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2004, 53 (02) :685-699

[2] Advances in engineered surfaces for functional performance [J].

Bruzzone, A. A. G. ;

Costa, H. L. ;

Lonardo, P. M. ;

Lucca, D. A. .

CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2008, 57 (02) :750-769

[3] Biocompatible magnesium alloys as absorbable implant materials - Adjusted surface and subsurface properties by machining processes [J].

Denkena, B. ;

Lucas, A. .

CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2007, 56 (01) :113-116

[4]

Dindorf C, 2005, P 6 INT C MAGN ALL T, P575

[5] LASER SHOCK-INDUCED MICROSTRUCTURAL AND MECHANICAL PROPERTY CHANGES IN 7075 ALUMINUM [J].

FAIRAND, BP ;

WILLIAMS, DN ;

WILCOX, BA ;

GALLAGHER, WJ .

JOURNAL OF APPLIED PHYSICS, 1972, 43 (09) :3893-+

[6] Process mechanics and surface integrity by high-speed dry milling of biodegradable magnesium-calcium implant alloys [J].

Guo, Y. B. ;

Salahshoor, M. .

CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2010, 59 (01) :151-154

[7] The role of implant surface characteristics in the healing of bone [J].

Kieswetter, K ;

Schwartz, Z ;

Dean, DD ;

Boyan, BD .

CRITICAL REVIEWS IN ORAL BIOLOGY & MEDICINE, 1996, 7 (04) :329-345

[8] In-vitro dissolution of magnesium-calcium binary alloys: Clarifying the unique role of calcium additions in bioresorbable magnesium implant alloys [J].

Kirkland, Nicholas T. ;

Birbilis, Nick ;

Walker, Jemimah ;

Woodfield, Tim ;

Dies, George J. ;

Steiger, Mark P. .

JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS, 2010, 95B (01) :91-100

[9] The design and manufacture of biomedical surfaces [J].

Ramsden, J. J. ;

Allen, D. M. ;

Stephenson, D. J. ;

Alcock, J. R. ;

Peggs, G. N. ;

Fuller, G. ;

Goch, G. .

CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2007, 56 (02) :687-711

[10] Magnesium and its alloys as orthopedic biomaterials: A review [J].

Staiger, MP ;

Pietak, AM ;

Huadmai, J ;

Dias, G .

BIOMATERIALS, 2006, 27 (09) :1728-1734

← 1 2 →