A kind of cobalt-chromium alloy biological material and preparation method thereof

Abstract

The invention discloses a cobalt-chromium alloy biological material and a preparation method thereof, which comprises the following components in terms of weight percentage: the balance is Co. The preparation method of the material is to weigh the raw materials in proportion, mix and smelt Co, Mo, Cr, Si, Fe, C, N, homogenize and cast according to biological requirements; spray ZrO on the surface of the cast and uncooled product. 2 , and then cooled naturally to obtain a cobalt-chromium alloy biomaterial; this scheme improves the composition of the alloy material, effectively improves the mechanical properties and biocompatibility of the material, and modifies the surface of the alloy material by spraying, causing a phase change on the surface to enhance The strength of the alloy surface while maintaining the toughness inside the alloy makes the surface of the material more wear-resistant, thereby ensuring its high service life.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a cobalt-chromium alloy biological material and a preparation method thereof. Background technique [0002] With the continuous development of modern science and technology, the level of medical treatment is becoming more and more developed. Biomaterials are the most important field of life science research. Most organs of the human body can be replaced by artificial organs and other medical devices implanted in the body, such as the human body. Human hard tissues such as bones and cardiac pacemakers can be replaced by metal titanium alloys and chromium alloys. Since medical devices, alloys, or alloys are implanted in living organisms or are in direct contact with the surface of living organisms, these medical devices are required to have high corrosion resistance and biocompatibility. In addition, when these medical devices are used as artificial joint materials, they a...

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Problems solved by technology

However, the surface grains of the alloy prepared by casting are relatively coarse, the mechanical properties and wear resistance are low, and it is difficult to ensure the high hardness and high wear resistance characteristics of the alloy as materials for artificial joints and surgical instruments, and it is difficult to ensure the service life of the alloy