AZ31/HA-Zeolite Nano Crystalline Biocomposite Fabricated by Mechanical Alloying and Powder Metallurgy: Mechanical Properties

Document Type : Persian

Authors

1 Vocational College Sama, Islamic Azad University of Najaf Abad, Najaf Abad, Iran

2 Assistant Advanced Materials Research Center, School of Materials Engineering, Najaf Abad Branch, Islamic Azad University, Najaf Abad, Iran

3 Master - Advanced Materials Research Center, School of Materials Engineering, Najaf Abad Branch, Islamic Azad University, Najaf Abad Branch, Iran

Abstract

 
Magnesium and its alloys are light, biodegradable, biocompatible metals that have promising applications as biomaterials. Magnesium is potentially useful for orthopedic and cardiovascular applications. However, the corrosion rate of this metal is so high that its degradation occurs before the end of the healing process. One of the ways to improve the corrosion rate is to compose it’s with ceramic materials such as HA. In this study, at first the alloy with a nominal composition of Mg-3%Al-1%Zn (AZ31 alloy) was produced by high energy ball milling (HEBM) of Mg powder, Zn powder and Al powder under high purity argon. The ball milling parameters were chosen following: shaft rotation was 600 rpm, ratio of balls to powder was 20:1 and milling time was 2, 4 and 6 h under argon atmosphere. The Mg alloy powders obtained were pressed with different amounts of HA-Zeolite nano composite powder, weight ratio HA (Hydroxyapatite) to Zeolite 4:1 ,HZ, under 1000 MPa in steel die with 10 mm in diameter and 20 mm in height. The samples pressed were sintered for 1 h at 630 K in an inert atmosphere furnace. Microstructure characterization of as-milled powders and as-sintered alloys were carried out by SEM. An X-ray diffraction (XRD) was used for phase analysis. It means that powder obtained is nano structure. Mechanical strength and El. % improved up to approximately 50% and 40% by in AZ31/HZ bio- composite samples containing 20 wt. % HZ. So, this nano biocomposite is good candidate for orthopedic medical applications.

Keywords

References

[1] دکتر محمد حسین فتحی،خواص و کاربرد پزشکی بیوسرامیک ها، انتشارات ارکان دانش،1388
[2] خواص و کاربرد پزشکی بیو فلزات ،فتحی/ محمدحسین مرتضوی/ وجیهه‌السادات، انتشارات ارکان دانش،1382
[3] هیدروکسی آپاتیت : نانوذرات معدنی استخوان،  مهدی سادات شجاعی،  سازمان انتشارات جهاد دانشگاهی،1389
[4] معرفی و کاربرد هیدروکسی آپاتیت (Interpore) در بیماریهای پریودنتال، یدالله سلیمانی‌شایسته/ امیر قاسمی، جهاد دانشگاهی (دانشگاه تهران، دانشکده دندانپزشکی)،1371
 
 
 

[5] Ali Nadernezhad1 ; Bahman Torabinejad2 et all, Poly (lactic-co-glycolic)/nanostructured merwinite porous composites for bone tissue engineering: II. structural and in vitro characterization Volume 2, Issue 4, Autumn 2014, Page 13-24

 [6] LeGeros, R. Z., Tung, M. S., "Chemical Stability of Carbonate and Fluoide Containing Apatites", Caries. Res., 17, pp. 419-429, 1983.
[7] Mohammadi Zahrani. E., Fathi. M. H., "Sintering and Mechanical Properties of Nanocrystalline Carbonated Fluorhydroxyapatite ", Proceedings of the 2nd International       Conference on Nanostructures (NS2008), P. 166, 11th-14th March 2008, Kish University,       Kish Island, Iran. 
[8]  Fathi. M. H., Mohammadi Zahrani. E., "Mechanochemical  Synthesis of Fluoridated-
[9] LeGeros RZ. Calcium phosphates in oral biology and medicine. In: Myers Karger H,   editor. Monographs in oral science, vol. 15. Basel: AG Publishers, Switzerland, 1991.
[10] Bonfield W., Gibson. I. R., "Process for the preparation of magnesium and carbonate  substituted hydroxyapatite", Patent Application No. WO 99/32400; 1999.
[11] Hassan Gheisari , Ebrahim Karamian and Majid Abdellahi , A novelhydroxyapatite –Hardystonite nanocompositeceramic,Ceramics International 41(2015)5967–5975.
[12] Hassan Gheisari , Ebrahim Karamian , "Preparation and characterization of hydroxyapatite reinforced with hardystonite as a novel bio-nanocomposite for tissue
 
Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering
Volume 9, Issue 3 - Serial Number 27
Autumn 2016
Pages 543-552

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