阅读说明：本技术 一种真空镀蓝黑色功能梯度复合层及其制备方法 (Vacuum plating blue-black functional gradient composite layer and preparation method thereof ) 是由 满伟文 范伟华 刘海华 王云鹏 谢见文 于 2020-07-14 设计创作，主要内容包括：本发明公开了一种真空镀蓝黑色功能梯度复合层及其制备方法,包括金属基体、打底过渡层、钛钢层、蓝黑色镀层,打底过渡层位于金属基体上方,钛钢层位于打底过渡层上方,蓝黑色镀层位于钛钢层上方；钛钢层包含Ti、Al、Cr,其中,Ti、Al、Cr的原子百分比为：30％～50％：25％～40％：15％～30％。本发明具有如下有益效果：结合力优良：通过“相似相溶”原理,使得涂层间的结合力达到最优；高致密性：以真空镀技术制备,致密度高；高耐磨性：蓝黑色镀层的厚度可达1μm以上,提高使用磨损时间；工艺适用范围广。(The invention discloses a vacuum plating bluish black function gradient composite layer and a preparation method thereof, wherein the composite layer comprises a metal substrate, a priming transition layer, a titanium steel layer and a bluish black coating layer, the priming transition layer is positioned above the metal substrate, the titanium steel layer is positioned above the priming transition layer, and the bluish black coating layer is positioned above the titanium steel layer; the titanium steel layer comprises Ti, Al and Cr, wherein the atomic percentages of the Ti, the Al and the Cr are as follows: 30% -50%: 25% -40%: 15 to 30 percent. The invention has the following beneficial effects: the binding force is excellent: the bonding force between the coatings is optimized by the principle of 'similar intermiscibility'; high compactness: the density is high by the vacuum plating technology; high wear resistance: the thickness of the blue-black coating can reach more than 1 mu m, so that the service wear time is prolonged; the process has wide application range.)

1. The composite layer is characterized by comprising a metal substrate, a priming transition layer, a titanium steel layer and a blue-black coating, wherein the priming transition layer is positioned above the metal substrate, the titanium steel layer is positioned above the priming transition layer, and the blue-black coating is positioned above the titanium steel layer;

The titanium steel layer comprises Ti, Al and Cr, wherein the atomic percentages of the Ti, the Al and the Cr are as follows: 30% -50%: 25% -40%: 15 to 30 percent.

2. The vacuum plated blue-black functionally graded composite layer according to claim 1, wherein the priming transition layer is Ti.

3. The composite layer with blue-black function gradient vacuum plating according to claim 2, wherein the thickness of the priming transition layer is 20 to 80nm, the thickness of the titanium steel layer is 50 to 100nm, and the thickness of the blue-black plating layer is 1 to 3 um.

4. The vacuum plated blue-black functionally graded composite layer according to claim 3, wherein the blue-black plated layer has a color LAB value ranging from L: 33.00-38.00, A: -3.00 to 1.00, B: -10.00 to-8.00.

5. A method for preparing the blue-black functionally graded composite layer plated in vacuum according to any one of claims 1 to 4 is characterized by comprising the following steps:

s1, vacuumizing to 3-8 x 10 < -3 > Pa, introducing high-purity argon with the purity of more than or equal to 99.999 percent, and stabilizing the pressure to 1-6 x 10 < -1 > Pa;

s2, priming with Ti, biasing at 270-320V, and priming for 2-6 min;

s3, electroplating for 5-8 min by using Ti, Al and Cr in a certain proportion, and stabilizing the pressure to 1-3 multiplied by 10 < -1 > Pa by using high-purity argon with the purity of more than or equal to 99.999%;

S4, introducing acetylene gas 35-100 ml/min, and then introducing oxygen with the purity of more than or equal to 99.9% 20-320 ml/min;

s5, the titanium steel target current is 30-100A;

and S6, vacuum plating a blue-black coating for 70-180 min to obtain the vacuum plated blue-black functionally graded composite layer.

6. The method of claim 5, wherein in step S4, the oxygen is introduced gradually, the initial flow rate of oxygen is 20-150 ml/min, and then the oxygen flow rate is increased by 3-9 ml/min per minute until the oxygen flow rate is 250-320 ml/min.

Technical Field

The invention relates to the field of metal composite layers, in particular to a vacuum plating blue-black functional gradient composite layer and a preparation method thereof.

Background

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provides a vacuum plating blue-black functional gradient composite layer with high compactness, high wear resistance and excellent binding force and a preparation method thereof.

The technical scheme of the invention is as follows: the utility model provides a vacuum plating bluish black function gradient composite bed, includes metal substrate, priming transition layer, titanium steel layer, bluish black cladding material, priming transition layer is located metal substrate top, the titanium steel layer is located priming transition layer top, bluish black cladding material is located titanium steel layer top.

The titanium steel layer comprises Ti, Al and Cr, wherein the atomic percentages of the Ti, the Al and the Cr are as follows: 30% -50%: 25% -40%: 15 to 30 percent.

By adopting the technical scheme, in the vacuum plating blue-black function gradient composite layer, the priming transition layer is Ti.

By adopting the technical scheme, in the vacuum plating blue-black functional gradient composite layer, the thickness of the priming transition layer is 20nm, the thickness of the titanium steel layer is 50nm, and the thickness of the blue-black plating layer is 1 um.

By adopting the technical scheme, in the vacuum plating blue-black function gradient composite layer, the color LAB value range of the blue-black plating layer is L: 33.00-38.00, A: -3.00 to 1.00, B: -10.00 to-8.00.

A method for preparing a vacuum plating blue-black function gradient composite layer comprises the following steps:

s1, vacuumizing to 3-8 x 10 < -3 > Pa, introducing high-purity argon with the purity of more than or equal to 99.999 percent, and stabilizing the pressure to 1-6 x 10 < -1 > Pa;

s2, priming with Ti, biasing at 270-320V, and priming for 2-6 min;

s3, electroplating for 5-8 min by using Ti, Al and Cr in a certain proportion, and stabilizing the pressure to 1-3 multiplied by 10 < -1 > Pa by using high-purity argon with the purity of more than or equal to 99.999%;

s4, introducing acetylene gas 35-100 ml/min, and then introducing oxygen with the purity of more than or equal to 99.9% 20-320 ml/min;

s5, the titanium steel target current is 30-100A;

and S6, vacuum plating a blue-black coating for 70-180 min to obtain the vacuum plated blue-black functionally graded composite layer.

By adopting the technical scheme, in the method for preparing the vacuum plating blue-black function gradient composite layer, in the step S4, oxygen is introduced in a progressive mode, the initial flow rate of the oxygen is 20-150 ml/min, and then the oxygen flow rate is increased by 3-9 ml/min every minute until the oxygen flow rate is 250-320 ml/min.

By adopting the technical schemes, the invention has the following beneficial effects:

1. the binding force is excellent: the coating is designed by the principle of 'similar intermiscibility', so that the bonding force between the coatings is optimal;

2. high compactness: the coating is prepared by a vacuum plating technology, and has high density;

3. high wear resistance: the thickness of the blue-black coating in the composite layer can reach more than 1 mu m, so that the wearing or use wear time of the coating is effectively prolonged;

4. the process has wide application range: the process is suitable for most of various metal base materials, such as brass, steel, stainless steel and the like.

Detailed Description

The present invention will be described in detail with reference to specific examples.

The invention provides a vacuum plating bluish black function gradient composite layer which comprises a metal substrate, a priming transition layer, a titanium steel layer and a bluish black coating, wherein the priming transition layer is positioned above the metal substrate, the priming transition layer is Ti, the titanium steel layer is positioned above the priming transition layer, and the bluish black coating is positioned above the titanium steel layer.

The titanium steel layer comprises Ti, Al and Cr, wherein the atomic percentages of the Ti, the Al and the Cr are as follows: 30% -50%: 25% -40%: 15 to 30 percent.

The thickness of priming transition layer is 20 ~ 80nm, the thickness on titanium steel layer is 50 ~ 100nm, the thickness of blue black cladding material is 1 ~ 3 um.

The LAB value range of the blue-black coating is L: 33.00-38.00, A: -3.00 to 1.00, B: -10.00 to-8.00.

A method for preparing a vacuum plating blue-black function gradient composite layer comprises the following steps:

s1, vacuumizing to 3-8 x 10 < -3 > Pa, introducing high-purity argon with the purity of more than or equal to 99.999 percent, and stabilizing the pressure to 1-6 x 10 < -1 > Pa.

S2, priming with Ti under a bias voltage of 270-320V for 2-6 min.

S3, electroplating for 5-8 min by using Ti, Al and Cr in a certain proportion, and stabilizing the pressure to 1-3 multiplied by 10 < -1 > Pa by using high-purity argon with the purity of more than or equal to 99.999 percent.

S4, introducing acetylene gas 35-100 ml/min, and then introducing oxygen with the purity of more than or equal to 99.9% 20-320 ml/min; the oxygen is introduced in a progressive mode, the initial flow rate of the oxygen is 20-150 ml/min, and then the oxygen flow rate is increased by 3-9 ml/min every minute until the oxygen flow rate is 250-320 ml/min.

S5, and the titanium steel target current is 30-100A.

And S6, vacuum plating a blue-black coating for 70-180 min to obtain the vacuum plated blue-black functionally graded composite layer.