Composite-coating bone scaffold and preparation method thereof
A composite coating and bone technology, applied in the direction of coating, metal material coating process, superimposed layer plating, etc., can solve the problems of unconnected bone tissue binding, affecting bone healing, bone inflammation and other problems
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[0018] figure 1 The preparation method of the composite coated skeletal scaffold 100 shown according to an embodiment of the present invention includes the following steps:
[0019] Provide bone support 10;
[0020] A nano-hard coating composed of AlCrN, CrAlN, CrN, AlTiN, TiAlN, TiAlCrN, TiSiN, TiSiAlN, TiAlWN or a mixture thereof is deposited on the surface 10a of the skeletal support 10 by a PVD process to form a PVD coating 12; and
[0021] The growth-promoting nanoparticles composed of calcium nanoparticles, phosphorus nanoparticles, zinc nanoparticles or a mixture thereof are introduced into a PVD process furnace, and a PVD coating modified by growth-promoting nanoparticles is formed on the surface 12a of the PVD coating 12 by a PVD process. Layer 14.
[0022] In one embodiment of the present invention, the step of forming the PVD coating 12 by using the PVD process includes: firstly passing argon gas with a purity of 99.999%, and cleaning the surface 10a of the skelet...
Embodiment 1
[0027] Provides skeletal support;
[0028] Feed into argon with a purity of 99.999% (i.e. high-purity argon), and under the condition of a bias voltage of 800-1000V, clean the surface of the skeletal support; then stop feeding the argon, and feed with a purity of 99.999% nitrogen ( That is, high-purity nitrogen), under the condition of bias voltage of 80-100V, open the CrAl target, arc current of 120A-200A, use PVD process to deposit AlCrN alloy on the surface of the cleaned bone bracket to form a PVD coating with a thickness of 3μm-6μm layer;
[0029] Next, continue to feed nitrogen with a purity of 99.999% (i.e. high-purity nitrogen), under the condition of a bias voltage of 80-100V, keep the CrAl target in the open state, and introduce calcium nanoparticles of 1nm-100nm at the same time, and the arc current is 120A -200A, using PVD process to deposit calcium nanoparticle modified PVD coating with a thickness of 3μm-6μm on the surface of PVD coating to form a composite coat...
Embodiment 2
[0031] Provides skeletal support;
[0032] Feed into argon with a purity of 99.999% (i.e. high-purity argon), and under the condition of a bias voltage of 800-1000V, clean the surface of the skeletal support; then stop feeding the argon, and feed with a purity of 99.999% nitrogen ( That is, high-purity nitrogen), under the condition of bias voltage of 80-100V, open the CrAl target, arc current of 120A-200A, use PVD process to deposit AlCrN alloy on the surface of the cleaned bone bracket to form a PVD coating with a thickness of 3μm-6μm layer;
[0033] Next, continue to pass in nitrogen gas with a purity of 99.999% (i.e. high-purity nitrogen gas), under the condition of a bias voltage of 80-100V, keep the CrAl target in the open state, and introduce phosphorus nanoparticles of 1nm-100nm at the same time, and the arc current is 120A -200A, using PVD process to deposit phosphorus nano-particle modified PVD coating with a thickness of 3μm-6μm on the surface of PVD coating to for...
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