Nd-YAG laser cladding method for preparing thickness adjustable biological ceramic composite coating adopting bone-like structure
A composite coating and laser cladding technology, applied in the field of bioceramic materials, to achieve the effects of improved stability, excellent biocompatibility, and high bonding strength
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Embodiment 1
[0024] In the first step, Y 2 o 3 , with CaCO 3 Weigh it according to the ratio (weight percentage) of 1:72:27, put it in a container, mix it evenly, let it stand for dehydration, then mix it again, stand it for enhanced dehydration, put it into a mixer and mix it evenly, and get an average particle size of 50-100μm , a mixed powder with a water content of 6.2%;
[0025] In the second step, the mixed powder obtained in the first step is stacked on the surface of the Ti6Al4V alloy substrate (using other titanium alloy substrates has the same effect), with a thickness of 0.5mm;
[0026]The third step is to use the iLS-YC-30A YAG laser, under the process parameters of argon as the shielding gas, 3mm spot diameter, 900W output power, and 2mm / s scan rate, use Nd-YAG high-energy laser beam to mix the powder and The metal substrate is processed by laser cladding process to form Nd-YAG laser cladding bioceramic composite coating on the surface of titanium alloy. After testing, t...
Embodiment 2
[0028] The first step, with embodiment 1.
[0029] In the second step, the mixed powder obtained in the first step is stacked on the surface of the Ti6Al4V alloy substrate (using other titanium alloy substrates has the same effect), with a thickness of 1.0mm;
[0030] The third step is to use the iLS-YC-30A YAG laser, under the process parameters of argon as the shielding gas, 3mm spot diameter, 1000W output power, and 2mm / s scan rate, use Nd-YAG high-energy laser beam to mix powder and The metal substrate is processed by laser cladding process to form Nd-YAG laser cladding bioceramic composite coating on the surface of titanium alloy. After testing, the obtained coating has uniform crystal grains, good crystallization performance, and has the characteristics of irregular grains and fibrous tissue of natural bone tissue. The thickness of the coating is 1.0mm, and it is a chemical metallurgical bond with the metal substrate. The bonding strength is 37Mpa. The phase composition...
Embodiment 3
[0033] In the first step, Ce 2 o 3 , with CaCO 3 Weigh it according to the ratio (weight percentage) of 2:74:24, put it in a container, mix it evenly, let it stand for dehydration, then mix it again, stand it for enhanced dehydration, put it into a mixer and mix it evenly, and get an average particle size of 50-100μm , a mixed powder with a water content of 6.2%;
[0034] In the second step, the mixed powder obtained in the first step is stacked on the surface of the Ti6Al4V alloy substrate (using other titanium alloy substrates has the same effect), with a thickness of 1.5mm;
[0035] The third step is to use the iLS-YC-30A YAG laser, under the process parameters of argon gas as the shielding gas, 3mm spot diameter, 1000W output power, and 1mm / s scan rate, use Nd-YAG high-energy laser beam to mix powder and The metal substrate is processed by laser cladding process to form Nd-YAG laser cladding bioceramic composite coating on the surface of titanium alloy. After testing...
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