Cobalt-chromium alloy biological material and preparation method thereof

Abstract

The invention discloses a cobalt-chromium alloy biological material and a preparation method thereof. The cobalt-chromium alloy biological material comprises the following components according to theweight percent and the balance is Co. The preparation method of the material comprises the following steps that the raw materials are weighed in proportion, Co, Mo, Cr, Si, Fe, C and N are mixed and smelted, homogenizing is conducted, and then casting and molding are conducted according to biological requirements; and ZrO2 is sprayed on the surface of a cast and uncooled product, and then the cobalt-chromium alloy biological material is obtained through natural cooling. According to the scheme, the composition of the alloy material is improved, the mechanical property and biocompatibility of the material are effectively improved, the surface of the alloy material is modified through spraying, phase change is generated on the surface of the alloy material, the strength of the alloy surfaceis improved, meanwhile, the internal toughness of the alloy is maintained, the surface of the material is more resistant to abrasion, and then it is ensured that the material has long 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...

AI Technical Summary

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