Product Description
Vacuum
plasma spraying
equipment
Vacuum plasma spraying
equipment
Hydroxyapatite
(Hydroxyapatite, HA) biological ceramic material with excellent
biological activity and biocompatibility, but HA sintering
intensity is low after, and large brittle, to meet clinical use
requirement. In recent years, the use of material surface
treatment technology will HA biological ceramic materials coated
in titanium alloy of metal substrate surface to form HA
biological ceramic coating material. HA biological ceramic
coating can give full play to the biological ceramic material and
titanium alloy material each advantage, and overcome the
shortcomings of their respective, better meet the need of
clinical application
1. The artificial joint surface
vacuum plasma arc spraying Ti, HA coating
The artificial joint
surface vacuum plasma arc spraying Ti, HA coating Ti or its alloy
in the substrate of sedimentary plasma spraying titanium (Ti),
hydroxyapatite (HA) coating has set up a file in the clinical
application of gain. Plasma arc spraying is a high temperature
process, powder spraying process in there is a complicated
physical and chemical change. Plasma arc spraying HA coating and
its spraying powder, compared to happen structure and composition
of the change, and lead to coating of crystallinity decreased. In
the higher than **0 ℃ environment, Ti easily with
O2, H2, and N2 and CO2 reaction. Because of plasma arc jet high
temperature (as high as ****0 ℃), in the atmosphere
on plasma arc spraying, Ti will react with the surrounding
atmosphere. Spraying created during the reaction products will
often reduce the ductility of coating, and lead to material
produces crack
2. Vacuum plasma arc spraying and
atmospheric plasma arc spraying, in comparison
with jet speed, the
temperature is lower, spraying room atmosphere controllable and
other features, is the preparation of dense, coating oxygen
levels low, composition and powder approaches. Figure 1 for
vacuum plasma spraying equipment. Apply the vacuum technology can
be prepared by plasma spraying good performance of Ti and HA
coating.
Apply the vacuum
technology can be prepared by plasma spraying good performance of
Ti and HA coating.
Figure 1 vacuum
plasma spraying equipment
3. In the Ti*6 Al*4 V substrate
by vacuum and atmospheric plasma arc spraying Ti, HA coating
prepared,
and compares them,
found the spray coating oxidation atmosphere Ti is more serious,
coating contain a lot of TiO2 and TiO. And in the vacuum coating,
the oxidation to avoid. The oxidation of the coating affect the
it and alloy substrate union, atmospheric spraying (APS) Ti
coating and the base of the bond strength between about *7 MPa,
and vacuum coating (VPS) the combination of Ti coating strength
of *0 MPa. Compared with the original powder, plasma spraying HA
coating contain some amorphous and new phase, such as CaO and Ca3
(PO4) 2. Amorphous phase formation is mainly due to high
temperature melting in the particles in the basal spraying on
caused by reports; And CaO and Ca3 (PO4) 2 and other new phase is
from spraying process HA decomposition. Vacuum spray coating of
amorphous and HA new phase significantly reduced, this is mainly
thanks to VPS spraying low flame flow temperature measuring
results of crystallinity display, the APS HA, the crystallinity
of coating is only *2%, but the crystallinity of VPS HA coating
is more than *0%, can meet clinical implanted on the coating of
crystallinity requirements. Vacuum plasma spraying Ti-HA coating
artificial hip actual parts figure 2.Already spraying artificial hip
implant about ***0 pieces.
Figure 2 by vacuum
plasma spraying titanium-hydroxyapatite coating artificial
hip
4. HA matrix composite coating.
Adopt plasma arc spraying technology, in the Ti*6 Al*4 V alloy
substrate, the preparation of Ti, HA HA / / TiO2, HA/ZrO2, on
composite coating, can effectively improve coating and the union
between substrate.
Bond strength
analysis shows that, in HA coating blended with metal or ceramic
composition etc, the combination of coating can be improved. By
HA/ZrO2 composite coating, for example, mixed
withω
ZrO2 = *0% of the
composite coatings combined with strength than pure HA coating
about a times higher. With the improvement of strength, mainly
because of doping thing to ease the coating substrate and the hot
coefficient of expansion between the mismatch, reducing the
thermal expansion coefficient mismatch lead to the remnants of
the thermal stress in the coating and matrix interface in
concentration. In addition, the combination of doping thing small
body high strength is also composite coating to improve the
bonding strength one important reason.
Service and quality
acceptance:
1, free package
equipment installation debugging and operator training. Equipment
quality safe warranty period.
2, our quality policy
is: "with satisfactory products and sincere service, distinct
characteristics, meet the demand of customers".
3, enterprise with
complete before the sale of after-sales service system, the
company also provides warranty period of maintenance, after
maintenance services (only charge the corresponding cost).
4, we will provide
you perfect service enthusiasm accurately and timely, make great
efforts to meet and exceed your expectations and requirements.
Please contact with us immediately.
| Country: |
China |
| Model No: |
SX-
|
| FOB Price: |
(Negotiable)
Get Latest Price
|
| Place of Origin: |
China Guangzhou |
| Price for Minimum Order: |
- |
| Minimum Order Quantity: |
1 Set |
| Packaging Detail: |
free package equipment installation debugging and operator training. Equipment quality safe warrant |
| Delivery Time: |
15-45 |
| Supplying Ability: |
10 Set per Year |
| Payment Type: |
T/T, L/C |
| Product Group : |
- |
