Influence of shot peening on corrosion properties of biocompatible magnesium alloy AZ31 coated by dicalcium phosphate dihydrate (DCPD)

Mhaede, Mansour; Pastorek, Filip; Hadzima, Branislav

doi:10.1016/j.msec.2014.03.023

Cited by 95 publications

(71 citation statements)

References 29 publications

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“…However, the shot peening sample presented higher values of i corr when compared to other samples. The lower corrosion resistance of the shot peening sample is attributed to increased surface energy and the residual stresses after the shot peening process, generating more active surfaces 28 . egend: R a = Roughness arithmetic average; R ms = Average square roughness; R pp = Maximum or peak-to-peak roughness.…”

Section: Resultsmentioning

confidence: 98%

“…This behavior is confirmed by increased values of i corr and decreased values of E corr and of E pit [27] . The current density (i corr ) is directly related to the corrosion rate, consequently, reflects on the intensity of the constant process of corrosion in specific electrolytes 28 . However, the shot peening sample presented higher values of i corr when compared to other samples.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of the Shot Peening Process on the Corrosion and Oxidation Resistance of AISI430 Stainless Steel

et al. 2015

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Effect of the Shot Peening Process on the Corrosion and Oxidation Resistance of AISI430 Stainless Steel

et al. 2015

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“…"Shot Peening") materiálu. Tryskanie povrchu je potvrdeným a dobre zvládnutým typom mechanického spracovania povrchu, ktoré zvyšuje odolnosť kovových komponentov vystavených cyklickému namáhaniu, koróznemu praskaniu, alebo opotrebeniu [12,13]. Tryskanie je spôsob mechanického opracovania povrchu za studena, kde je povrch súčiastky bombardovaný malými tvrdými časticami najčastejšie guľovitého tvaru.…”

Section: úVodunclassified

“…Jednou z najdôležitejších elektrochemických charakteristík vyjadrujúcich odpor povrchu materiálu proti korózii je polarizačný odpor R p [12,19,20]. Prvok CPE predstavuje konštantný fázový element a jeho účel v ekvivalentných obvodoch je bližšie popísaný u predchád-zajúcich autorov [21,22].…”

Section: Brúsená -P500unclassified

Electrochemical Corrosion Characteristics of High Strength Low Alloy Domex 700 Steel After Mechanical Surface Treatment in Chloride Environment

Borko

Pastorek

Hadzima

2017

Koroze a Ochrana Materialu

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162 Czech AssociaƟon of Corrosion Engineers ÚVODV súčasnej dobe je trendom nahrádzať bežné konštrukčné ocele vysokopevnými nízko legovanými (HSLA) oceľami. Pri použití HSLA (vysokopevné nízkolegované ocele) ocelí namiesto bežných uhlíkových ocelí je možné ušetriť až 20 % hmotnosti pri zachovaní vysokej pevnosti, tuhosti a húževnatosti konštrukcie. Vysokopevné nízkolegované ocele boli vyvinuté predovšetkým ako náhrada nízkouhlíkovej a uhlíkovej ocele pre automobilový priemysel s cieľom zlepšiť pomer pevnosti k hmotnosti a tým znížiť hmotnosť konštruk-cie. Vysoká pevnosť a vysoké mechanické vlastnosti nie sú dosiahnuté prostredníctvom vysokého obsahu legujúcich prvkov, ale predovšetkým riadeným tepelným a termo-mechanickým spracovaním. Jedná sa o nízko alebo o mikrolegované ocele a obsah legujúcich prvkov nepresahuje 0,25 % (mikrolegované) a 5 % (nízkolegované). Obsah uhlíka sa pohybuje v rozmedzí 0,05-0,25 % C [1][2][3][4][5].Existuje mnoho druhov mechanického spracovania povrchu konštrukčných materiálov [9]. Jednou z metód, ktorá sa zaraďuje medzi mechanické opracovania povrchu je brúsenie predstavujúce abrazívnu technológiu, prostredníctvom ktorej je možné povrch materiálu zhomogenizovať a odstrániť korózne produkty a iné nečistoty [10,11]. Medzi ďalšie mechanické úpravy povrchu sa zaraďuje tryskanie (tzv. "Shot Peening") materiálu. Tryskanie povrchu je potvrdeným a dobre zvládnutým typom mechanického spracovania povrchu,

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“…For many other applications, it is known that modifying the surface integrity of a material can affect both mechanical and degradation properties. Several studies have shown the effects of Laser Shock Peening (LSP) [10][11][12][13][14][15][16][17], burnishing [18][19][20][21][22][23][24], and shot peening [25][26][27][28][29][30][31][32][33] on corrosion and fatigue performance. Specifically, techniques to mechanically induce increased residual stress in a surface layer have been shown to increase fatigue strength and slow the degradation rate.…”

Section: Introductionmentioning

confidence: 99%

A Strategy to Optimize Recovery in Orthopedic Sports Injuries

Sealy¹,

Liu²,

Li³

et al. 2017

J Bioanal Biomed

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An important goal for treatment of sports injuries is to have as short a recovery time as possible. The critical problem with current orthopedic implants is that they are designed to be permanent and have a high complication rate (15%) that often requires removal and replacement with a second surgery; and subsequently a second rehabilitation cycle. This study tests the feasibility of having a device that provides the needed mechanical properties, to promote healing for a specified amount of time and then degrades away to shorten recovery time. The specific strategy was to create a surface layer on a degradable metal alloy with a controllable degradation rate. Previous studies have shown the feasibility of using surface treatments to alter the surface integrity (i.e., topography, microhardness, and residual stress) leading to increased fatigue strength and a decreased degradation rate. This study was an extension of these previous studies to look at the changes in surface integrity and mechanical properties initially as well as the degradation over time for two surface treatments (shot peening and burnishing). Although the treatments improved initial properties and the burnishing treatment slowed the degradation rate, the faster degradation of the base material in vitro (compared to previous studies) probably reduced the overall impact. The study helped support the feasibility of this approach by showing the ability of the surface treatment to modify surface integrity, initial mechanical properties, and degradation rate; the degradation rate of the base material used needs to be slower and/or the surface treatment needs to create a bigger change in the degradation rate. Further it ultimately needs to be shown that the surface treatment can produce a material that will allow orthopedic devices to meet the required clinical design constraints in vivo.

show abstract

Influence of shot peening on corrosion properties of biocompatible magnesium alloy AZ31 coated by dicalcium phosphate dihydrate (DCPD)

Cited by 95 publications

References 29 publications

Effect of the Shot Peening Process on the Corrosion and Oxidation Resistance of AISI430 Stainless Steel

Effect of the Shot Peening Process on the Corrosion and Oxidation Resistance of AISI430 Stainless Steel

Electrochemical Corrosion Characteristics of High Strength Low Alloy Domex 700 Steel After Mechanical Surface Treatment in Chloride Environment

A Strategy to Optimize Recovery in Orthopedic Sports Injuries

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