Department of Chemistry

Permanent URI for this communityhttps://repository.cuilahore.edu.pk/handle/123456789/14

Browse

Author: search.filters.author.Dr. Eng. Farasat IqbalSubject: search.filters.subject.Dr. Eng. Farasat Iqbal

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Optimization of Mechanical Properties of Biodegradable Zn-Mg-Cu Alloys for Pediatric Orthopedic Applications
    (Library Information Services, COMSATS University Islamabad, Lahore Campus, 2025) Kiran Nayab Laila; CIIT/SP24-R06-011/LHR; Dr. Eng. Farasat Iqbal; LHR TP 10018
    The research for biodegradable metals for pediatric orthopedic applications with suitable mechanical strength is still ongoing. Previous study demonstrates that although Zinc has a suitable corrosion rate but it possesses low mechanical strength which is not suitable for pediatric orthopedic applications. On the other hand, magnesium and copper have a suitable mechanical property and their addition in Zn based alloys make them a potential candidate for Orthopedic applications. This study aims to develop Zinc-based biodegradable alloys using powder metallurgical processing technique and to analyze their properties using different techniques (SEM, EDX, XRD, hardness, UTM and AAS). It was concluded that addition of magnesium has increased the density, compressive strength and microhardness of the Zinc alloys due to small grain size. However, inclusion of copper to Zn-Mg alloys enhanced the density, microhardness and compressive strength further due to formation of rich intermetallic phases. Analysis of AAS revealed the increased concentration of release of Zinc ions and loss of Zn mass in stimulated body fluid (SBF) after degradation of Zn alloys in different time intervals.
  • No Thumbnail Available
    Item
    Hydrothermal Synthesis of Silver & Zinc Doped Bioactive Coatings on Magnesium Alloy for Potential Application in Orthopedics
    (Library Information Services COMSATS University Islamabad Lahore Campus, 2022-02-25) Kinza Mujahid; FA20-R06-008; Dr. Eng. Farasat Iqbal; LHR TP 7879
    Biomaterials are artificially designed implants used in various medical applications such as orthopedic, cardiovascular and dental implants in past. These metallic implants have been selected based on biocompatibility, mechanical strength and bioresorbability to fix the bone fracture. Conventional implants i.e., Titanium, stainless steel and cobalt alloy have been implanted as bone fixation devices that needs revised surgery to remove them once the bone healed. So, they are health costly as well as cause financial burden on patients. Therefore, biodegradable and biocompatible permanent implants are required, which degrade slowly with healing process and maintain its mechanical integrity until new bone is regenerated. The ideal candidate for this is Mg and its alloys that can be used in orthopedic devices. Mg and its alloys fulfill the criterial of biocompatibility, osteogenetic ability, appropriate mechanical strength, and low elastic modulus (~40 GPa) which is close to human bone (~20 GPa). Its fast degradation rate results into release of hydrogen gas at surgery site and loss of its mechanical strength and attack of bacteria are the major challenges in orthopedic application.