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Metallographic Examination of Medical Implants

fig 4 b. wsgifMedical technology has developed many new devices that can be implanted into humans (in-vivo) to repair, assist or take the place of diseased or defective bones, arteries and even organs. The materials used for these devices have evolved steadily over the past fifty years with titanium and cobalt-based alloys replacing stainless steels. Metallographic examination has become an indispensable tool in the testing, quality control, failure studies and post-mortem analyses of these devices. This paper presents techniques and results for examination of titanium-based acetabular cups and Co-Cr-Mo femoral hip stems and knees. These implants have porous metallic coatings on one side to enhance bone/metal interface adhesion by in-growth of bone into the porous coatings. By George Vander Voort

Archeometallurgy – List of Articles

Characterizing Iron Based Historical Specimens – Struers Characterizing Iron Based Historical Specimens – Buehler Microstructure of Historical Iron-Based Objects Microstructure of Historical Objects – Copper-Based Alloys

Failure Analysis

Fractography Failure Analysis 1. Conducting The Examination 2. Materials Manufacturing Problems 3. Service Problems Fractography 1. Fractography 2. Fractography Volume 12 Other Failure Analysis and Litigation Papers 1. Met Techniques for FA 2. Metallography and Failure Analysis 3. Now You Know July 2010 IH 4. Three Mile Island Unit 2 Failure 5. Wire Ropes 6. World … Read more

Microscopy

Advances in Metallography Introduction to Metallography Microstructure, Its Evolution Al Matrix Composites Intro to Stereology, Volume Fraction and Spacing Microstructure of Titanium and Its Alloys Al-Si Phase Diagram Intro to Stereology, Grain Size Measurement Nonferrous Alloys Ceramic Preparation Intro to Stereology, Measurement of Size and Shape Pb-Sn and Pb-Free Solders Copper Alloys Intro to Stereology, ASTM E 1245 … Read more

Fractography

1. Fractography 2. Fractography Volume 12 The articles and presentations that can be down-loaded from this web site are based upon work done by GFV while employed at Bethlehem Steel (1967-1983), Carpenter Technology (1983-1996), Buehler Ltd. (1996-2009) and from the authors consulting work for companies such as Struers Inc., Latrobe Steel, Scot Forge, etc., and … Read more

George Vander Voort is a World-Renown…

…Metallography Consultant specializing in metallographic preparation and microstructural interpretation problems as well as fractography and failure analysis.