CN104004998A - Preparation method of titanium alloy surface Ti-based amorphous coating - Google Patents
Preparation method of titanium alloy surface Ti-based amorphous coating Download PDFInfo
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- CN104004998A CN104004998A CN201410247198.3A CN201410247198A CN104004998A CN 104004998 A CN104004998 A CN 104004998A CN 201410247198 A CN201410247198 A CN 201410247198A CN 104004998 A CN104004998 A CN 104004998A
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Abstract
The invention discloses a preparation method of a titanium alloy surface Ti-based amorphous coating and belongs to the technical field of metal material surface modification. The preparation method of the titanium alloy surface Ti-based amorphous coating comprises the following steps: pretreating a titanium alloy workpiece; connecting the titanium alloy workpiece with a cathode of a power supply to form a workpiece electrode, and connecting a Ti-based amorphous material with an anode of the power supply to form a processing electrode; switching on the power supply, so that the Ti-based amorphous coating is prepared. The preparation method of the titanium alloy surface Ti-based amorphous coating has the beneficial effects that large-area and rapid preparation of the titanium alloy surface Ti-based amorphous coating can be realized and the obtained Ti-based amorphous coating has good abrasion performance.
Description
Technical field
The present invention relates to the preparation method of the titanium-based amorphous coating of a kind of titanium alloy surface, belong to metal surface properties modification technical field.
Background technology
Non-crystaline amorphous metal is because its unique microtexture shows the physics more excellent than traditional crystalline material, chemistry and mechanical property, as high intensity, hardness, excellent elastic performance, good resistance to corrosion and wear resisting property etc., be the new metallic material that a class has a extensive future.Non-crystaline amorphous metal is because size and the preparation technology of original amorphous block have greatly limited the application in industrial circle, prepare amorphous coating on product parts surface and can overcome the restriction in non-crystalline material size, can make full use of again the excellent characteristics such as non-crystaline amorphous metal high strength, high rigidity and good toughness, application prospect is extensive.
Titanium alloy has high specific tenacity, good erosion resistance and biocompatibility, has been widely used in numerous areas.In the summary that Chen Changjun delivers at it, point out that the plastic deformation ability lower due to titanium alloy, low work hardening capacity and surface film oxide do not have the factors such as protective capability and cause it to wear no resistance.Yin Zhenxing finds that the frictional coefficient of titanium alloy is high and unstable, has serious adhesive wear phenomenon, wears no resistance.Li Zhengxian also points out that in its patent of invention (ZL 200710188530.3) the bad frictional behaviour of the titanium alloy characteristic intrinsic with its metal is relevant, and for example its thermal conductivity is low, and when friction, even burn-back phenomenon of easy adhesive wear, wears no resistance.
Summary of the invention
The object of this invention is to provide a kind of preparation method who forms titanium-based amorphous coating at titanium alloy surface, prepare titanium-based amorphous coating at titanium alloy surface, the advantage of non-crystaline amorphous metal can be given full play to, and high coating-substrate bonding strength and good interface compatibility can be obtained; Take into account titanium alloy body mechanical property, significant for the application of expanding titanium alloy.
The present invention realizes by the following technical solutions:
A preparation method for the titanium-based amorphous coating of titanium alloy surface, comprises the following steps:
(1) by titanium alloy workpiece pre-treatment: by after the surface degreasing of titanium alloy workpiece, use SiC waterproof abrasive paper by titanium alloy workpiece polish step by step, cleaning, drying for standby;
(2) titanium alloy workpiece good pre-treatment is connected with the negative electrode of surface Hardening Treatment device power supply, becomes the workpiece utmost point, then by fixture by the anodic bonding of titanium-based amorphous matrix material and surface Hardening Treatment device power supply, become machined electrode;
(3) power supply of connection surface Hardening Treatment device, between the workpiece utmost point and machined electrode, apply volts DS 15～70 V, when the distance between the workpiece utmost point and machined electrode is during lower than 0.15 mm, gas between the two is ionized, produce gas discharge phenomenon, can start titanium alloy workpiece to carry out the preparation of titanium-based amorphous coating;
(4) volts DS between the workpiece utmost point and machined electrode is adjusted to 50～70 V, continuing through-current capacity to titanium alloy workpiece surface is the argon gas stream of 10～20 L/min, and mobile machined electrode makes electrodischarge machining(E.D.M.) rate-controlling at 0.5～1.5 cm
2/ min, be 0.5～1.5 h process period, machines the power supply of rear broken surface intensive treatment device, then maintain argon gas stream 5～15 min, makes titanium alloy workpiece slow cooling to room temperature; When logical argon gas, making the logical nozzle of argon gas and the distance of titanium alloy workpiece is 10～20 mm, and makes to become between nozzle and titanium alloy workpiece the angle of 30～60 °.
(5) titanium alloy workpiece that obtains titanium-based amorphous coating is carried out to wear weight loss detection, and contrast with untreated titanium alloy workpiece.
In such scheme, described titanium-based amorphous matrix material is comb shape, and comb shape structure is by some the right cylinders distribution and constitution that is arranged in parallel.
In such scheme, described titanium alloy workpiece is Ti6Al4V workpiece.
In such scheme, described titanium-based amorphous matrix material is Ti46Zr20V12Cu5Be17.
Of the present invention
beneficial effect: can realize the big area of amorphous coating, preparation fast at titanium alloy surface, the titanium-based amorphous coating obtaining has good wear resistance.
Brief description of the drawings
Fig. 1 is coating preparation facilities schematic diagram;
Fig. 2 is the enlarged view of titanium-based amorphous matrix material in Fig. 1;
Fig. 3 is the X-ray diffractogram of titanium-based amorphous coating;
Fig. 4 is the wear weight loss figure of titanium alloy and titanium-based amorphous coating;
Fig. 5 is the polishing scratch figure of titanium alloy workpiece;
Fig. 6 is the polishing scratch figure of titanium-based amorphous coating.
The anode of 1-surface Hardening Treatment device power supply in figure; The negative electrode of 2-surface Hardening Treatment device power supply; 3-titanium-based amorphous matrix material; 4-titanium alloy workpiece; 5-obtain the wear weight loss of the titanium alloy workpiece of titanium-based amorphous coating; The wear weight loss of 6-untreated titanium alloy workpiece; The resistance element of M-surface Hardening Treatment device; The capacity cell of N-surface Hardening Treatment device; L-argon gas conduit and nozzle; H-argon gas stream; The polishing scratch of K-untreated titanium alloy workpiece; S-the obtain polishing scratch of the titanium alloy workpiece of titanium-based amorphous coating.
Embodiment
Further illustrate the present invention below by embodiment, but be not limited to following examples.
Embodiment 1:
Now, taking titanium alloy ti6al4v as example, titanium-based amorphous matrix material is Ti46Zr20V12Cu5Be17.
The present invention is implemented, as shown in Figure 1:
(1) by titanium alloy workpiece pre-treatment: by after the surface degreasing of titanium alloy workpiece 4, use SiC waterproof abrasive paper by titanium alloy workpiece polish step by step, cleaning, drying for standby;
(2) titanium alloy workpiece 4 good pre-treatment is connected with the negative electrode 2 of surface Hardening Treatment device power supply, becomes the workpiece utmost point, then by fixture, titanium-based amorphous comb shape matrix material 3 is connected with the anode 1 of surface Hardening Treatment device power supply, become machined electrode;
(3) power supply of connection surface Hardening Treatment device, between the workpiece utmost point and machined electrode, apply volts DS 15～70 V, in the time that the distance between the workpiece utmost point and machined electrode is 0.05 mm, gas between the two is ionized, produce gas discharge phenomenon, can start titanium alloy workpiece 4 to carry out the preparation of titanium-based amorphous coating;
(4) volts DS between the workpiece utmost point and machined electrode is adjusted to 60 V, the argon gas stream of 15 L/min that are to the titanium alloy workpiece 4 lasting through-current capacities in surface, mobile machined electrode makes electrodischarge machining(E.D.M.) rate-controlling at 1.0 cm
2/ min, be 1 h process period, machines the power supply of rear broken surface intensive treatment device, then maintain argon gas stream 10 min, makes titanium alloy workpiece 4 slow cooling to room temperature; Making the logical nozzle of argon gas and the distance of titanium alloy workpiece 4 is 15 mm, and makes to become between nozzle and titanium alloy workpiece the angle of 45 °.
(5) the titanium-based amorphous coating obtaining is carried out to wear weight loss detection, and contrast with untreated titanium alloy workpiece 4.
The enlarged view of titanium-based amorphous matrix material has been shown in Fig. 2, and described titanium-based amorphous matrix material is comb shape, and comb shape structure is by some the right cylinders distribution and constitution that is arranged in parallel.Adopt the design of this comb shape, can realize the big area of titanium-based amorphous coating, preparation fast at titanium alloy surface.
Shown in Fig. 3, the X-ray diffractogram of the titanium alloy workpiece of titanium-based amorphous coating, proves the non-crystalline state feature of coating.
Fig. 4 shows, the wear weight loss figure of untreated titanium alloy and titanium-based amorphous coated on titanium alloy, and the wear weight loss of titanium-based amorphous coated on titanium alloy is 0.5 × 10
-4g, the wear weight loss of untreated titanium alloy is 8.0 × 10
-4g, the wear weight loss of titanium-based amorphous coated on titanium alloy is far below untreated titanium alloy.
Fig. 5 and Fig. 6 show the grinding defect morphology of untreated titanium alloy and titanium-based amorphous coated on titanium alloy, and the polishing scratch width of titanium-based amorphous coated on titanium alloy is far below untreated titanium alloy, and titanium-based amorphous coated on titanium alloy has good wear resistance.
Claims (5)
1. a preparation method for the titanium-based amorphous coating of titanium alloy surface, is characterized in that: comprise the following steps:
(1) by titanium alloy workpiece pre-treatment: by after the surface degreasing of titanium alloy workpiece, use SiC waterproof abrasive paper by titanium alloy workpiece polish step by step, cleaning, drying for standby;
(2) titanium alloy workpiece good pre-treatment is connected with the negative electrode of surface Hardening Treatment device power supply, becomes the workpiece utmost point, then by fixture by the anodic bonding of titanium-based amorphous matrix material and surface Hardening Treatment device power supply, become machined electrode;
(3) power supply of connection surface Hardening Treatment device, between the workpiece utmost point and machined electrode, apply volts DS 15～70 V, when the distance between the workpiece utmost point and machined electrode is during lower than 0.15 mm, gas between the two is ionized, produce gas discharge phenomenon, can start titanium alloy workpiece to carry out the preparation of titanium-based amorphous coating;
(4) volts DS between the workpiece utmost point and machined electrode is adjusted to 50～70 V, continuing through-current capacity to titanium alloy workpiece surface is the argon gas stream of 10～20 L/min, and mobile machined electrode makes electrodischarge machining(E.D.M.) rate-controlling at 0.5～1.5 cm
2/ min, be 0.5～1.5 h process period, machines the power supply of rear broken surface intensive treatment device, then maintain argon gas stream 5～15 min, makes titanium alloy workpiece slow cooling to room temperature;
(5) titanium alloy workpiece that obtains titanium-based amorphous coating is carried out to wear weight loss detection, and contrast with untreated titanium alloy workpiece.
2. the preparation method of the titanium-based amorphous coating of titanium alloy surface according to claim 1, is characterized in that: described titanium-based amorphous matrix material is comb shape, and comb shape structure is by some the right cylinders distribution and constitution that is arranged in parallel.
3. the preparation method of the titanium-based amorphous coating of titanium alloy surface according to claim 1, it is characterized in that: while leading to argon gas stream in described step (4), making the logical nozzle of argon gas and the distance of titanium alloy workpiece is 10～20 mm, becomes the angle of 30～60 ° between nozzle and titanium alloy workpiece.
4. the preparation method of the titanium-based amorphous coating of titanium alloy surface according to claim 1, is characterized in that: described titanium-based amorphous matrix material is Ti46Zr20V12Cu5Be17.
5. the preparation method of the titanium-based amorphous coating of titanium alloy surface according to claim 1, is characterized in that: described titanium alloy workpiece is Ti6Al4V workpiece.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911512A (en) * | 2015-04-17 | 2015-09-16 | 辽宁工业大学 | Method for making bimetallic composite board by using dendrite reinforced titanium-based metal glass composite material and pure titanium |
| CN105908182A (en) * | 2016-06-01 | 2016-08-31 | 太原理工大学 | Preparation method of austenite stainless steel surface nickel-titanium alloy coating |
| CN106011852A (en) * | 2016-06-01 | 2016-10-12 | 太原理工大学 | Preparation method of high-entropy alloy coating on surface of austenitic stainless steel |
| CN109957801A (en) * | 2017-12-25 | 2019-07-02 | 财团法人金属工业研究发展中心 | Surface modification method and products thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107953619B (en) * | 2016-10-17 | 2019-11-08 | 中国科学院金属研究所 | Titanium-based amorphous/titanium alloy stratiform composite material and preparation method |
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| CN102660732A (en) * | 2012-04-28 | 2012-09-12 | 南京航空航天大学 | Process for preparing (Ti,Al)BN ceramic amorphous-nanocrystalline wear-resistant anti-corrosion composite coating |
| US20130180528A1 (en) * | 2010-09-29 | 2013-07-18 | Xing Zhou | Implanted tongue pulling device, pull plate, pull line, retractor and method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20130180528A1 (en) * | 2010-09-29 | 2013-07-18 | Xing Zhou | Implanted tongue pulling device, pull plate, pull line, retractor and method |
| CN102660732A (en) * | 2012-04-28 | 2012-09-12 | 南京航空航天大学 | Process for preparing (Ti,Al)BN ceramic amorphous-nanocrystalline wear-resistant anti-corrosion composite coating |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911512A (en) * | 2015-04-17 | 2015-09-16 | 辽宁工业大学 | Method for making bimetallic composite board by using dendrite reinforced titanium-based metal glass composite material and pure titanium |
| CN105908182A (en) * | 2016-06-01 | 2016-08-31 | 太原理工大学 | Preparation method of austenite stainless steel surface nickel-titanium alloy coating |
| CN106011852A (en) * | 2016-06-01 | 2016-10-12 | 太原理工大学 | Preparation method of high-entropy alloy coating on surface of austenitic stainless steel |
| CN105908182B (en) * | 2016-06-01 | 2019-02-22 | 太原理工大学 | A kind of preparation method of austenitic stainless steel surface Nitinol coating |
| CN106011852B (en) * | 2016-06-01 | 2019-03-01 | 太原理工大学 | A kind of preparation method of austenite stainless steel surface high entropy alloy coating |
| CN109957801A (en) * | 2017-12-25 | 2019-07-02 | 财团法人金属工业研究发展中心 | Surface modification method and products thereof |
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