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Ti-6Al-7Nb is produced by powder metallurgy methods. The most common methods are hot pressing, metal injection mouldering and blending and pressing. In the production of Ti-6Al-7Nb, usually a sintering temperature between 900-1400 o C is used. Altering the sintering temperature gives the Ti-6Al-7Nb different properties such as different ...
For most products loadings are between 10 and 35%, high loadings are used for plastisols: 34% Flame retardants: 1–30: Being petrochemicals, most plastics burn readily, flame retardants can prevent this: Brominated flame retardants, chlorinated paraffins: Non-chlorinated organophosphates are ecologically safer, though often less efficient: 13% ...
Knee replacement, also known as knee arthroplasty, is a surgical procedure to replace the weight-bearing surfaces of the knee joint to relieve pain and disability, most commonly offered when joint pain is not diminished by conservative sources. [1] [2] It may also be performed for other knee diseases, such as rheumatoid arthritis.
The high molecular weight makes it a very tough material, but results in less efficient packing of the chains into the crystal structure as evidenced by densities of less than high-density polyethylene (for example, 0.930–0.935 g/cm 3). UHMWPE can be made through any catalyst technology, although Ziegler catalysts are most common.
They have the advantage of being inert in the human body, and their hardness and resistance to abrasion makes them useful for bones and teeth replacement. Some ceramics also have excellent resistance to friction, making them useful as replacement materials for malfunctioning joints. Properties such as appearance and electrical insulation are ...
Traditional powder metallurgy methods are also more material efficient, yet acquiring fully dense products can be a common issue. [ 35 ] With the emergence of solid freeform fabrication ( 3D printing ) the possibility to produce custom-designed biomedical implants (e.g. hip joints) has been realized.
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