KR102507381B1 - Color Alloy Based on Juxtaposition Mixing - Google Patents

Abstract

A problem to be solved by the present invention is to provide a color alloy in which a hardness a, b, L values, etc. are controlled by grafting a concept of juxtaposed mixing onto an intermetallic compound having its own color, thereby being applicable to various fields. The present invention is the juxtaposed mixing based color alloy in which the L value is 55 to 85, the a value is -9 to 1, and the b value is -13.5 to -0.3 in Lab color coordinates.

Description

Color Alloy Based on Juxtaposition Mixing}

The present invention relates to juxtaposition-based color alloys.

Modern design technology has been developed with a clear purpose for industrialization, but it is superficial and the applicable fields are very limited. As the need and demand for the emotional market increased after the 4th industrial revolution, the development of value-innovative materials by design that satisfies the needs of users began, and various efforts were made to secure a wider range of emotional materials. it is progressing

In the metal industry, new materials are actively being developed through the convergence of design and metal technology, and among them, technologies for implementing various colors on metal surfaces are being developed.

In the metal industry, various colors can be implemented through processes such as painting, anodizing, ion plating, and nanopatterning on the metal surface in order to use metal as an emotional material. However, these processes have a disadvantage in that the color implementation layer may be destroyed or discolored due to being vulnerable to external physical or chemical action.

In order to solve this problem, color alloys having colors are being developed, but it is currently difficult to derive a desired color.

The problem to be solved by the present invention is to provide a color alloy with adjusted hardness, a, b, L values, etc. so that it can be applied to various fields by grafting the concept of juxtaposition mixing and intermetallic compounds having their own color.

The present invention is a color alloy based on juxtaposition and mixing in which the L value is 55 to 85, the a value is -9 to 1, and the b value is -13.5 to -0.3 in Lab color coordinates.

The hardness of the color alloy according to the present invention may be greater than 100 Hv.

The color alloy according to the present invention may include three or more elements selected from the group consisting of Al, Mg, Si, Cu, Sn, Fe, Cr, Ti, V, and Co.

The color alloy according to the present invention may be represented by any one chemical formula selected from the group consisting of Chemical Formulas 1 to 6, and may be multi-phase.

[Formula 1]

Al _100-3x (Mg ₂ Si) _x

[Formula 2]

Al _100-4y (Mg ₂ Si ₂ ) _y

[Formula 3]

Al _100-5z (Mg ₂ Si ₃ ) _z

[Formula 4]

Cu _75-a Mg _a Si ₂₅

[Formula 5]

(Cu-Mg-Sn) _b -M1 _n -M2 _m

[Formula 6]

CoMg _p Si _q

In Formula 1, x is 11 to 33, in Formula 2, y is 12.5 to 22.5, in Formula 3, z is 10 to 18, in Formula 4, a is 20 to 25, and in Formula 5, M1 or M2 is Fe, Cr, Ti or V, n or m is 0 or 1, b is 1 when n or m is 0 or 1, or an integer satisfying b+n = 100, and p in Formula 6 above. or q is 1 to 5.

The color alloy represented by Chemical Formula 5 according to the present invention may be a quaternary or pentameric alloy comprising one or more metal elements selected from among Fe, Cr, Ti, and V.

The color alloy represented by Chemical Formula 6 according to the present invention may be a ternary alloy of Co-Mg-Si.

In the present invention, the L, a, b values and hardness of the color alloy can be controlled by using an intermetallic compound having a limited element and weight %.

1 is a diagram showing a state diagram of a color alloy including Al, Mg and Si.
Figure 2 is a diagram showing the microstructure of alloy group A in the phase diagram of Figure 1;
Figure 3 is a diagram showing the microstructure of alloy group B in the phase diagram of Figure 1;
Figure 4 is a diagram showing the microstructure of alloy group C in the phase diagram of Figure 1;
FIG. 5 shows XRD analysis results of alloy groups A, B and C of FIGS. 2, 3 and 4.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

The present invention is a color alloy based on juxtaposition and mixing in which the L value is 55 to 85, the a value is -9 to 1, and the b value is -13.5 to -0.3 in Lab color coordinates, and the color alloy may have a hardness of 100 Hv or more. .

The juxtaposition mixing refers to a phenomenon in which two or more colors are delicately juxtaposed with a plurality of small dots and lines so that the colors appear mixed when viewed from a distance.

Since the color alloy is composed of multiple phases, it can exhibit various colors according to juxtaposition and mixing.

The color alloy may include three or more elements selected from the group consisting of Al, Mg, Si, Cu, Sn, Fe, Cr, Ti, V, and Co. Specifically, the element combination constituting the color alloy is as follows. Same as

The color alloy according to the present invention may have a compositional formula represented by [Formula 1]:

[Formula 1]

Al _100-3x (Mg ₂ Si) _x

In Formula 1, x may be 11 to 33, preferably 14 to 21 or 23 to 29. The color alloy represented by Chemical Formula 1 may be formed of a multi-phase.

2 and 5, the multi-phase may be composed of Mg ₂ Si phase and α-Al phase, blueness may be adjusted according to the fraction of Mg ₂ Si phase, and the fraction of Mg ₂ Si phase and α-Al phase may be 30 to 99% and 1 to 70%, respectively, preferably 75 to 85% and 15 to 25%.

Outside the range of the percentage fraction, it is not easy to adjust the desired L, a, b values and hardness.

In addition, the color alloy represented by Formula 1 may have an L value of 67 to 70, an a value of -1 to 1, and a b value of -13.5 to -1, preferably -6 to -2 or -11 to -7.

In addition, the hardness of the color alloy represented by Formula 1 may be 100 to 460 Hv, preferably 150 to 230 Hv or 240 to 310 Hv.

The color alloy according to the present invention may have a compositional formula represented by [Formula 2]:

[Formula 2]

Al _100-4y (Mg ₂ Si ₂ ) _y

In Formula 2, y may be 12.5 to 22.5, preferably 17.5 to 22.5. The color alloy represented by Chemical Formula 2 may be formed of a multi-phase.

3 and 5, the multi-phase may be composed of Mg ₂ Si phase, Si phase, and α-Al phase, and blueness may be adjusted according to the phase fraction of Mg ₂ Si phase and Si phase, and Mg ₂ Si phase , The fraction of the Si phase and the α-Al phase may be 30 to 98%, 1 to 40%, and 1 to 65%, respectively, and preferably 80 to 94%, 3 to 10%, and 3 to 10%.

Outside the range of the percentage fraction, it is not easy to adjust the desired L, a, b values and hardness.

In addition, the color alloy represented by Formula 2 may have an L value of 67 to 70, an a value of -1 to 1, and a b value of -10 to -3, preferably -9.5 to -6 can be

In addition, the hardness of the color alloy represented by Formula 2 may be 260 ~ 460Hv, preferably 340 ~ 460Hv.

The color alloy according to the present invention may have a compositional formula represented by [Formula 3]:

[Formula 3]

Al _100-5z (Mg ₂ Si ₃ ) _z

In Chemical Formula 3, z may be 10 to 18, preferably 14 to 16. The color alloy represented by Chemical Formula 3 may be formed of a multi-phase.

Referring to FIGS. 4 and 5, the multi-phase may be composed of Mg ₂ Si phase, Si phase, and α-Al phase, and blueness and hardness may be increased according to the formation of the eutectic structure of the Mg ₂ Si-Si phase, The fraction of Mg ₂ Si-Si phase, Si phase, and α-Al phase may be 30 to 98%, 1 to 40%, and 1 to 65%, respectively, and preferably 85 to 95%, 3 to 10%, and 1 to 65%. may be 5%.

Outside the range of the percentage fraction, it is not easy to adjust the desired L, a, b values and hardness.

In addition, the color alloy represented by Formula 3 may have an L value of 67 to 70, an a value of -1 to 1, and a b value of -9 to -2, preferably -7 to -5 can be

In addition, the hardness of the color alloy represented by Chemical Formula 3 may be 200 to 430 Hv, preferably 260 to 340 Hv.

The color alloy according to the present invention may have a compositional formula represented by [Chemical Formula 4]:

[Formula 4]

Cu _75-a Mg _a Si ₂₅

In Formula 4, a may be 20 to 25. The color alloy represented by Chemical Formula 4 may be formed of a multi-phase, specifically, a phase composed of a Cu-based compound and a Mg ₂ Si phase.

In addition, the color alloy represented by Chemical Formula 4 may have an L value of 75 to 85, an a value of -4 to -3, and a b value of -1 to 1.

In addition, the hardness of the color alloy represented by Chemical Formula 4 may be 450 to 600 Hv, preferably 500 to 520 Hv.

The color alloy according to the present invention may be a Cu-Mg-Sn ternary system, a quaternary system, or a pentagonal system, and may have a compositional formula represented by [Formula 5]:

[Formula 5]

(Cu-Mg-Sn) _b -M1 _n -M2 _m

In Formula 5, M1 or M2 is Fe, Cr, Ti, or V, n or m is 0 or 1, and b is 1 when n or m is 0 or 1, or an integer satisfying b+n = 100. there is.

In Chemical Formula 5, when n and m are 0 and b is 1, it may be a Cu-Mg-Sn ternary alloy. The ternary alloy of Cu-Mg-Sn may be multi-phase CuMgSn, and specifically may include a phase composed of a Cu-based compound and a phase composed of a Mg-Sn compound.

In addition, the Cu-Mg-Sn ternary alloy may have an L value of 70 to 80, an a value of -5 to -1, and a b value of -10 to -8, and the Cu- The hardness of the Mg-Sn ternary alloy may be 200 to 400 Hv, preferably 250 to 350 Hv.

In Formula 5, when M1 is Fe or Cr, n is 1, m is 0, b is 1, M1 is Ti or V, m is 0, and b+n is an integer satisfying 100 , The color alloy according to the present invention may be a quaternary alloy of Cu-Mg-Sn. The Cu-Mg-Sn quaternary alloy may be multi-phase CuMgSnFe, CuMgSnCr, (CuMgSn) ₉₉ Ti ₁ or (CuMgSn) ₉₉ V ₁ .

Specifically, the CuMgSnFe may consist of a phase composed of a Cu-based compound and a phase composed of an Fe-based compound, and the (CuMgSn) ₉₉ Ti ₁ and the (CuMgSn) ₉₉ V ₁ may include a phase composed of a Cu-based compound and a Fe-based compound. It may consist of a phase made of a compound, and Ti or V may be dissolved throughout the alloy.

The Cu-Mg-Sn quaternary alloy may have an L value of 70 to 80, an a value of -5 to -1, and a b value of -10 to -8, and the Cu-Mg- The hardness of the quaternary alloy of Sn may be 200 to 400 Hv, preferably 250 to 360 Hv.

In Chemical Formula 5, when n and m are 1 and b is 1, it may be a five-membered alloy of Cu-Mg-Sn. The five-component alloy of Cu-Mg-Sn may be multi-phase CuMgSnFeCr.

In addition, the Cu-Mg-Sn five-member alloy may have an L value of 70 to 80, an a value of -5 to -1, and a b value of -10 to -8, and the Cu- The hardness of the Mg-Sn five-membered alloy may be 200 to 400 Hv, preferably 250 to 350 Hv.

The color alloy according to the present invention may be a ternary alloy of Co-Mg-Si, and may have a compositional formula represented by [Formula 6]:

[Formula 6]

CoMg _p Si _q

In Formula 6, p or q may be 1 to 5. The ternary alloy of Co-Mg-Si may be multi-phase CoMg ₂ Si ₃ , and may include a phase composed of a Co-based compound, a CoSi phase, and a Mg ₂ Si phase.

In addition, the Co-Mg-Si ternary alloy may have an L value of 70 to 80, an a value of -3 to -2, and a b value of -7 to -5, and the Co- The hardness of the Mg-Si ternary alloy may be 550 to 650 Hv, preferably 580 to 610 Hv.

Hereinafter, specific embodiments according to the present invention will be described.

Examples 1 to 41 and Comparative Examples 1 and 2

First, Al, Mg, Si, Cu, Sn, Fe, Cr, Ti, V, Co, Ag, and Li metals having a purity of 99.9% or more are prepared. Thereafter, metals were mixed for each element according to the composition of Tables 1 to 3, and a plate-shaped alloy having a width of 50 mm, a length of 50 mm, and a thickness of 5 mm was prepared by induction melting casting in an argon (Ar) mixed gas atmosphere. do.

division Furtherance Example 1 Al ₆₇ Mg ₂₂ Si ₁₁ Example 2 Al ₆₄ Mg ₂₄ Si ₁₂ Example 3 Al ₆₁ Mg ₂₆ Si ₁₃ Example 4 Al ₅₈ Mg ₂₈ Si ₁₄ Example 5 Al ₅₅ Mg ₃₀ Si ₁₅ Example 6 Al ₅₂ Mg ₃₂ Si ₁₆ Example 7 Al ₄₉ Mg ₃₄ Si ₁₇ Example 8 Al ₄₆ Mg ₃₆ Si ₁₈ Example 9 Al ₄₃ Mg ₃₈ Si ₁₉ Example 10 Al ₄₀ Mg ₄₀ Si ₂₀ Example 11 Al ₃₇ Mg ₄₂ Si ₂₁ Example 12 Al ₃₄ Mg ₄₄ Si ₂₂ Example 13 Al ₃₁ Mg ₄₆ Si ₂₃ Example 14 Al ₂₈ Mg ₄₈ Si ₂₄ Example 15 Al ₂₅ Mg ₅₀ Si ₂₅ Example 16 Al ₂₂ Mg ₅₂ Si ₂₆ Example 17 Al ₁₉ Mg ₅₄ Si ₂₇ Example 18 Al ₁₆ Mg ₅₆ Si ₂₈ Example 19 Al ₁₃ Mg ₅₈ Si ₂₉ Example 20 Al ₁₀ Mg ₆₀ Si ₃₀ Example 21 A _l7 Mg ₆₂ Si ₃₁ Example 22 Al ₄ Mg ₆₄ Si ₃₂ Example 23 Al ₁ Mg ₆₆ Si ₃₃ Example 24 Al ₅₀ Mg ₂₅ Si ₂₅ Example 25 Al ₄₀ Mg ₃₀ Si ₃₀ Example 26 Al ₃₀ Mg ₃₅ Si ₃₅ Example 27 Al ₂₀ Mg ₄₀ Si ₄₀ Example 28 Al ₁₀ Mg ₄₅ Si ₄₅ Example 29 Al ₅₀ Mg ₂₀ Si ₃₀ Example 30 Al ₄₀ Mg ₂₄ Si ₃₆ Example 31 Al ₃₀ Mg ₂₈ Si ₄₂ Example 32 Al ₂₀ Mg ₃₂ Si ₄₈ Example 33 Al ₁₀ Mg ₃₆ Si ₅₄

division Furtherance Example 34 CuMgSn Example 35 CuMgSnFeCr Example 36 CuMgSnFe Example 37 CuMgSnCr Example 38 (CuMgSn) ₉₉ Ti ₁ Example 39 (CuMgSn) ₉₉ V ₁ Example 40 Cu ₅₅ Mg ₂₀ Si ₂₅ Example 41 CoMg ₂ Si ₃

division Furtherance Comparative Example 1 Ag ₂ LiSn Comparative Example 2 Al ₁ Co ₃₃ Si ₆₆

Experimental example

L, a, b and hardness of the color alloys prepared in Examples 1 to 41 and Comparative Examples 1 and 2 were measured by the following measuring method, and the results thereof are shown in Table 4 (Examples 1 to 33) and Table 5 (Examples 34 to 41) and Table 6 (Comparative Examples 1 and 2).

[measurement method]

L, a, b values: The reflectivity of the alloy is measured using a photon-sprectrometer and converted into three color stimulus values (X, Y, Z), and then converted into the CIE L*a*b* color space.

Hardness (Vickers hardness): Measured through micro-indentation. Considering the characteristics of the alloy, indentation is created by applying pressure with a load of 1 N for 10 seconds. The average Vickers hardness is calculated by deriving a total of 10 measurement results.

division L a b Vickers hardness (Hv) Example 1 67-70 -1 to 1 -1.30 114.8 Example 2 -1.93 118.3 Example 3 -2.41 143.8 Example 4 -2.33 154.2 Example 5 -2.63 146.3 Example 6 -3.33 165.8 Example 7 -4.24 172.0 Example 8 -5.05 157.3 Example 9 -4.70 204.2 Example 10 -5.59 206.6 Example 11 -5.97 225.4 Example 12 -6.42 250.2 Example 13 -7.22 245.6 Example 14 -7.88 289.3 Example 15 -7.54 271.9 Example 16 -8.26 287.8 Example 17 -9.79 298.8 Example 18 -10.15 301.7 Example 19 -10.16 305.2 Example 20 -11.22 328.7 Example 21 -12.72 369.8 Example 22 -11.97 410.6 Example 23 -13.13 452.5 Example 24 -3.18 260.1 Example 25 -4.74 302.2 Example 26 -6.30 346.0 Example 27 -7.87 390.7 Example 28 -9.43 457.7 Example 29 -2.58 201.7 Example 30 -4.02 227.6 Example 31 -5.46 262.9 Example 32 -6.91 353.3 Example 33 -8.35 422.61

division L a b Vickers hardness (Hv) Example 34 75 -3.7 -8.5 293.56 Example 35 75 -3.7 -8.5 320.33 Example 36 75 -3.7 -8.5 272.80 Example 37 75 -3.7 -8.5 282.16 Example 38 75 -3.7 -8.5 315.52 Example 39 75 -3.7 -8.5 353.10 Example 40 79 -3.28 -0.4 510.3 Example 41 78 -2.5 -6 606.13

division L a b Vickers hardness (Hv) Comparative Example 1 70.01 -6.7 -2.8 Brittle Comparative Example 2 58 -3 -6 Brittle

Referring to Table 4 (color alloy according to an embodiment of the present invention), Table 5 (color alloy according to an embodiment of the present invention) and Table 6 (color alloy according to a comparative example), the juxtaposition and mixing base according to the present invention Color alloys have L values of 55 to 85, a values of -9 to 1, b values of -13.5 to -0.3, and hardness of 100 Hv or more through various element combinations, but 1 and 2 in comparison It can be confirmed that the hardness does not satisfy this.

As such, referring to the experimental example, the present invention can adjust the hardness by using an intermetallic compound, through juxtaposition mixing, by adjusting the L, a, b values of the color alloy, and by limiting the elements and weight%, , The color alloy prepared according to this method can be utilized in various industrial fields.

In the above, preferred embodiments of the present invention have been described in detail. The description of the present invention is for illustrative purposes, and those skilled in the art will understand that other specific forms can be easily modified without changing the technical spirit or essential features of the present invention.

Therefore, the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modifications derived from the meaning, scope and equivalent concepts of the claims are interpreted to be included in the scope of the present invention. It should be.

Claims (6)

As a juxtaposition mixture-based color alloy with an L value of 55 to 85, a value of -9 to 1, and b value of -13.5 to -0.3 in Lab color coordinates,
The color alloy is represented by any one chemical formula selected from the group consisting of the following formulas 4 to 6, and is a juxtaposed mixture-based color alloy, characterized in that the multi-phase.
[Formula 4]
Cu _75-a Mg _a Si ₂₅
[Formula 5]
(Cu-Mg-Sn) _b -M1 _n -M2 _m
[Formula 6]
CoMg _p Si _q
In Formula 4, a is 20 to 25, M1 or M2 in Formula 5 is Fe, Cr, Ti or V, n or m is 0 or 1, and b is 1 when n or m is 0 or 1, or , b + n = 100, and in Formula 6, p or q is 1 to 5. According to claim 1,
The color alloy based on juxtaposition mixing, characterized in that the hardness of the color alloy is 100 Hv or more. delete delete According to claim 1
The color alloy represented by Formula 5 is a juxtaposition-mixing-based color alloy, characterized in that it is a quaternary or five-component alloy comprising one or more metal elements selected from Fe, Cr, Ti, and V. According to claim 1
The color alloy represented by Formula 6 is a ternary alloy of Co-Mg-Si.

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