Fe-ni-cr-al based multi-principal element alloy transparent glaze frit and glazing process thereon

Abstract

The present application belongs to the technical field of glaze, and particularly relates to FeNiCrAl-based multi-main-element alloy transparent glaze glaze and glazing process thereof. The glaze contains inorganic oxide, hollow glass microspheres, barium oxide and sodium silicate aqueous solution. The glazing process comprises the following steps: uniformly mixing the inorganic oxide, hollow glass microspheres, barium oxide and sodium silicate aqueous solution to prepare the glaze; uniformly coating the glaze on the surface of the heated FeNiCrAl-based multi-main-element alloy; drying and solidifying; and firing the alloy at 1000-1300 DEG C. The glaze of the present application has the advantages of simple manufacturing process, simple glazing process steps, high operability, strong adhesion between the glaze layer and the alloy, and the ability to solve the problem of explosion and falling of the glaze layer on the surface of the multi-main-element alloy due to the difference between the two phases, and has the advantages of corrosion resistance, water resistance, chemical resistance and wear resistance.

Description

Technical Field

[0001] This invention belongs to the field of glaze technology, specifically relating to a FeNiCrAl-based multi-principal-element alloy transparent glaze and its glazing process. Background Technology

[0002] Glaze is a colorless or colored glassy thin layer covering the surface of an object. The glaze layer increases the mechanical strength of the product, beautifies the object, and gives it resistance to acids and alkalis, as well as wear. Currently, the glaze used on metal surfaces is mainly enamel glaze. Enamel glaze is a glaze layer that is coated on metal blanks such as steel, cast iron, aluminum, copper, and stainless steel, and after firing, it can firmly bond with the metal blank. Because metal and glaze are two different substances with a large difference in their coefficients of thermal expansion, one method of enamel glaze preparation is to first apply an opaque base glaze as a transition layer on the metal substrate to reduce the stress between the metal and the top glaze, and then apply the top glaze to give the product a smooth and beautiful surface. Alternatively, a one-time enamel coating process can be used, where the glaze serves as both a base glaze and a top glaze, applied and fired in one step. Due to the presence of the base glaze, these methods lack the translucency of porcelain glaze. Furthermore, the firing time is relatively long, generally requiring 3-5 hours, which greatly restricts production efficiency.

[0003] FeNiCrAl-based multi-principal element alloys are a novel structural material characterized by high strength, high hardness, high wear resistance, and high corrosion resistance. Compared to traditional alloys, the different phase composition and microstructure of FeNiCrAl-based multi-principal element alloys limit their glaze preparation. This is mainly because the alloy is composed of FCC (L12) and B2 (BCC) phases. The FCC phase is mainly rich in Fe and Cr elements, while the B2 phase is mainly rich in Ni and Al elements. The difference in the composition of the two phases and their different coefficients of thermal expansion easily cause the glaze to peel off, and existing glazes and processes cannot meet production requirements. Therefore, it is essential to study the glaze composition and glazing process of FeNiCrAl-based multi-principal element alloys. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a FeNiCrAl-based multi-principal alloy transparent glaze and its glazing process. The glaze of this invention is applicable to two-phase multi-principal alloys, has a simple manufacturing process, a simple glazing process, and the alloy can be fired in one step without pretreatment, exhibiting high operability. The glaze layer has strong adhesion to the alloy, and can solve the problem of glaze layer cracking and peeling on the surface of multi-principal alloys due to the difference in composition between the two phases.

[0005] The present invention is specifically implemented through the following technical solution.

[0006] This invention provides a FeNiCrAl-based multi-principal-element alloy transparent glaze, made from the following components:

[0007] An aqueous solution of inorganic oxides, hollow glass microspheres, barium oxide, and sodium silicate, wherein the mass ratio of the inorganic oxides, hollow glass microspheres, barium oxide, and sodium silicate aqueous solution is 1–10: 0.1–3: 0.5–4: 2–16;

[0008] In an aqueous solution of sodium silicate, the mixing ratio of sodium silicate to water is 5–15 g: 10–50 mL.

[0009] Furthermore, the hollow glass microspheres have a density of 0.15 g / cc and are pure white in color.

[0010] Furthermore, the purity of barium oxide is 90.00% to 99.99%.

[0011] Furthermore, the sodium silicate modulus is 1–2.2, and the purity is analytical grade.

[0012] Furthermore, the inorganic oxides are a combination of silicon dioxide, boron trioxide, sodium oxide, potassium oxide, lithium oxide, zinc oxide, zirconium dioxide, aluminum oxide, titanium dioxide, and F2O, with an analytical purity.

[0013] This invention provides a glazing process for transparent glazes on FeNiCrAl-based multi-principal-element alloys, comprising the following steps:

[0014] S1. Weigh the raw materials according to the following proportions: the mixed mass ratio of inorganic oxide, hollow glass microspheres, barium oxide and sodium silicate aqueous solution is 1-10:0.1-3:0.5-4:2-16; in the sodium silicate aqueous solution, the mixing ratio of sodium silicate and water is 5-15g:10-50mL.

[0015] S2. Mix the inorganic oxide, hollow glass microspheres, barium oxide and sodium silicate aqueous solution weighed in S1 evenly to prepare the glaze;

[0016] S3. The glaze prepared in S2 is uniformly coated onto the surface of the preheated FeNiCrAl-based multi-principal-element alloy.

[0017] S4. Solidify the alloy treated in S3;

[0018] S5. The alloy treated with S4 can be fired at 1000-1300℃.

[0019] Furthermore, coating methods can include dipping, swishing, pouring, brushing, and spraying.

[0020] Furthermore, in S3, the alloy is polished and then preheated at a temperature of 30–70°C for 5–30 minutes.

[0021] Furthermore, in S4, the curing temperature is 25–70°C, and the curing time is 5–60 min.

[0022] Furthermore, in S5, the firing time is 5 to 60 minutes.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] The glaze and glazing process provided by this invention involve mixing inorganic oxides, hollow glass microspheres, barium oxide, and sodium silicate aqueous solution in a certain proportion, then applying the mixture to heated metal, curing, and firing to obtain a uniform glaze layer. The preheating and curing processes of the glaze and alloy play a crucial role in the preparation of the glaze layer. Preheating ensures rapid drying of the glaze near the metal surface during glazing, solving the problem of poor local wetting. Curing ensures the glaze dries and solidifies on the metal surface, solving the problem of high glaze fluidity and easy detachment. This glaze and glazing process can solve the problem of glaze cracking and detachment during cooling in dual-phase FeNiCrAl multi-principal alloys due to the difference in composition between the two phases. The glaze layer exhibits strong adhesion to the substrate, a noticeable gloss, and excellent performance.

[0025] Hollow microspheres, as a type of hollow glass microsphere filling material, possess characteristics such as low density, good stability, and corrosion resistance. Due to their lightweight and hollow nature, they can act as stress buffers, mitigating the tensile or compressive stress caused by the difference in expansion coefficients between the metal and the glaze layer during cooling, which can lead to glaze cracking or detachment. As stress release centers, hollow microspheres transfer and release stress from the metal or glaze layer, balancing the stresses of both and thus solving the problem of glaze detachment. Meanwhile, barium oxide has a fluxing effect, improving the gloss of the glaze and expanding the firing range; it can be used as a stabilizer and flux in glazes. Sodium silicate, as a soluble mineral binder, can be coated on metal surfaces to increase wettability and the bonding force between the metal matrix and the glaze, forming alkali metal silicate and gel films. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 Optical images of the glaze layer prepared in Example 1.

[0028] Figure 2 Optical images of the glaze layer prepared in Example 2.

[0029] Figure 3 Optical images of the glaze layer prepared in Example 3.

[0030] Figure 4 Optical images of the glaze layer prepared in Example 4.

[0031] Figure 5 Optical image of the glaze layer obtained without hollow microspheres, as shown in Comparative Example 1.

[0032] Figure 6 Optical images of the barium oxide-free glaze prepared in Comparative Example 2; the left image is the image before firing, and the right image is the image after firing.

[0033] Figure 7 Optical image of the glaze layer obtained without sodium silicate in Comparative Example 3;

[0034] Figure 8 The images shown are optical images of the glaze layer obtained before firing in Comparative Example 4; the left image shows the glaze layer without preheating, and the right image shows the glaze layer with preheating. Detailed Implementation

[0035] To enable those skilled in the art to better understand and implement the technical solutions of the present invention, the present invention will be further described below in conjunction with specific embodiments and accompanying drawings. However, the embodiments described are not intended to limit the present invention.

[0036] Unless otherwise specified, the experimental and detection methods described in the following embodiments are conventional methods; unless otherwise specified, the reagents and materials are commercially available.

[0037] The hollow microspheres were purchased from Foshan Lanling Chemical Co., Ltd., model S15, with a density of 0.15 g / cc and a pure white color.

[0038] Barium oxide was purchased from Beijing Innocare Technology Co., Ltd., with a purity of 90.00% to 99.99%.

[0039] Sodium silicate was purchased from Beijing Innocare Technology Co., Ltd., with a modulus of 1–2.2, and was of analytical grade.

[0040] The inorganic oxides are a combination of silicon dioxide, boron trioxide, sodium oxide, potassium oxide, lithium oxide, zinc oxide, zirconium dioxide, aluminum oxide, titanium dioxide, and F2O, with an analytical purity.

[0041] For FeNiCrAl-based multi-principal alloys, which are composed of FCC (L12) and B2 (BCC) phases, the FCC phase is mainly rich in Fe and Cr elements, while the B2 phase is mainly rich in Ni and Al elements. The difference in composition and expansion coefficient between the two phases easily causes glaze peeling, and existing glazes and processes cannot meet production requirements. Therefore, this invention provides a transparent glaze for FeNiCrAl-based multi-principal alloys and its glazing process, improving both the glaze composition and the glazing process:

[0042] Regarding the glaze composition, inorganic oxides, hollow glass microspheres, barium oxide, and sodium silicate aqueous solution were selected. Hollow microspheres can alleviate the problem of glaze cracking or detachment caused by tensile or compressive stress due to the difference in the expansion coefficients of the metal and glaze layer during cooling. As stress release centers, the hollow microspheres transfer and release stress from the metal or glaze layer, balancing the stresses of both and thus solving the problem of glaze detachment. Meanwhile, barium oxide has a fluxing effect, improving the gloss of the glaze and expanding the firing range; it can be used as a stabilizer and flux in the glaze. Sodium silicate, as a soluble mineral binder, can be coated on the metal surface to increase wettability and the bonding force between the metal matrix and the glaze, forming an alkali metal silicate and gel film.

[0043] In terms of the glazing process, inorganic oxides, hollow glass microspheres, barium oxide, and sodium silicate aqueous solution are mixed in a certain proportion. Then, heated metal is glazed, cured, and fired to obtain a uniform glaze layer. It is important to note that the preheating and curing processes of the glaze and alloy play a crucial role in the preparation of the glaze layer. Preheating ensures rapid drying of the glaze near the metal surface during glazing, solving the problem of poor local wetting. Curing ensures the glaze dries and sets on the metal surface, solving the problem of high glaze fluidity and easy detachment. This glaze and glazing process can solve the problem of glaze cracking and detachment during cooling in dual-phase FeNiCrAl multi-principal alloys due to the difference in composition between the two phases. The glaze layer has strong adhesion to the substrate, obvious gloss, and good results.

[0044] The present invention will now be described in detail through the following embodiments and comparative examples.

[0045] Example 1

[0046] A method for preparing a transparent glaze for FeNiCrAl-based multi-principal-element alloys includes the following steps:

[0047] S1. Weigh 100g of inorganic oxides using an electronic analytical balance, including 54.26g of silicon dioxide, 12.38g of boron trioxide, 6.55g of sodium oxide, 11.32g of potassium oxide, 1.14g of lithium oxide, 3.34g of zirconium dioxide, 10.04g of titanium dioxide, and 2.91g of F2O.

[0048] S2. Weigh 10g of sodium silicate and use a dropper to draw 20ml of deionized water. Stir and mix thoroughly.

[0049] S3. The solid and liquid are mixed evenly according to the mass ratio of inorganic oxide: hollow glass microspheres: barium oxide: sodium silicate aqueous solution = 5:1:0.5:10 to obtain the glaze.

[0050] A glazing process for FeNiCrAl-based multi-principal-element alloy transparent glaze includes the following steps:

[0051] (1) After holding the FeNiCrAl alloy at 50℃ for 5 minutes, immerse it completely vertically in the above glaze by dipping it in the glaze and leave it for 2 seconds. Then take it out and hold it at 50℃ for 60 minutes until the glaze is completely dry and cured.

[0052] (2) The dried FeNiCrAl alloy was placed in a box-type resistance furnace and fired at 1200℃ for 5 minutes before being removed. The alloy was then cooled to room temperature to obtain a glaze coating.

[0053] Figure 1 The image shows an optical image of the glaze layer prepared in Example 1. It can be seen that there is no obvious peeling on the surface, the glaze layer adheres well to the alloy, and the gloss is high.

[0054] Example 2

[0055] A method for preparing a transparent glaze for FeNiCrAl-based multi-principal-element alloys includes the following steps:

[0056] S1. Weigh out 100g of inorganic oxides using an electronic analytical balance, including 45.26g of silicon dioxide, 12.38g of boron trioxide, 6.55g of sodium oxide, 11.32g of potassium oxide, 1.14g of lithium oxide, 4.50g of zinc oxide, 3.34g of zirconium dioxide, 4.50g of aluminum oxide, 10.04g of titanium dioxide, and 2.91g of F2O.

[0057] S2. Weigh 10g of sodium silicate and use a dropper to draw 20ml of deionized water. Stir and mix thoroughly.

[0058] S3. The solid and liquid are mixed evenly according to the ratio of inorganic oxide: hollow glass microspheres: barium oxide: sodium silicate aqueous solution = 5:1:0.5:10 to obtain the glaze.

[0059] A glazing process for FeNiCrAl-based multi-principal-element alloy transparent glaze includes the following steps:

[0060] (1) After holding the FeNiCrAl alloy at 50℃ for 5 minutes, immerse it completely vertically in the glaze by dipping it in the glaze and leave it for 3 seconds. Then take it out and hold it at 50℃ for 60 minutes until the glaze is completely dry and cured.

[0061] (2) The dried FeNiCrAl alloy was placed in a box-type resistance furnace and fired at 1200℃ for 5 minutes before being removed. The alloy was then cooled to room temperature to obtain a glaze coating.

[0062] Figure 2 The image shows an optical image of the glaze layer prepared in Example 2. The hollow microsphere particles are clearly visible, and the glaze layer adheres well to the alloy.

[0063] Example 3

[0064] A method for preparing a transparent glaze for FeNiCrAl-based multi-principal-element alloys includes the following steps:

[0065] S1. Weigh out 100g of inorganic oxides using an electronic analytical balance, including 45.26g of silicon dioxide, 12.38g of boron trioxide, 6.55g of sodium oxide, 11.32g of potassium oxide, 1.14g of lithium oxide, 4.50g of zinc oxide, 3.34g of zirconium dioxide, 4.50g of aluminum oxide, 10.04g of titanium dioxide, and 2.91g of F2O.

[0066] S2. Weigh 10g of sodium silicate and use a dropper to draw 20ml of deionized water. Stir and mix thoroughly.

[0067] S3. The solid and liquid are mixed evenly according to the ratio of inorganic oxide: hollow glass microspheres: barium oxide: sodium silicate aqueous solution = 5:1:0.5:10 to obtain the glaze.

[0068] A glazing process for FeNiCrAl-based multi-principal-element alloy transparent glaze includes the following steps:

[0069] (1) After holding the FeNiCrAl alloy at 50℃ for 5 minutes, immerse it completely vertically in the glaze by dipping for 2-3 seconds, then take it out and hold it at 50℃ for 60 minutes until the glaze is completely dry.

[0070] (2) The dried FeNiCrAl alloy was placed in a box-type resistance furnace and fired at 1200℃ for 10 min before being removed. The alloy was then cooled to room temperature to obtain a glaze coating.

[0071] Figure 3 The image shows an optical image of the glaze layer prepared in Example 3. The hollow microsphere particles are clearly visible, and the glaze layer adheres well to the alloy.

[0072] Example 4

[0073] A method for preparing a transparent glaze for FeNiCrAl-based multi-principal-element alloys includes the following steps:

[0074] S1. Weigh out 100g of inorganic oxides using an electronic analytical balance, including 45.26g of silicon dioxide, 12.38g of boron trioxide, 6.55g of sodium oxide, 11.32g of potassium oxide, 1.14g of lithium oxide, 4.50g of zinc oxide, 3.34g of zirconium dioxide, 4.50g of aluminum oxide, 10.04g of titanium dioxide, and 2.91g of F2O.

[0075] S2. Weigh 10g of sodium silicate and use a dropper to draw 20ml of deionized water. Stir and mix thoroughly.

[0076] S3. The solid and liquid are mixed evenly according to the ratio of inorganic oxide: hollow glass microspheres: barium oxide: sodium silicate aqueous solution = 5:0.5:0.5:10 to obtain the glaze.

[0077] A glazing process for FeNiCrAl-based multi-principal-element alloy transparent glaze includes the following steps:

[0078] (1) After holding the FeNiCrAl alloy at 50℃ for 5 minutes, immerse it completely vertically in the glaze by dipping and leave it for 3 seconds. Then take it out and hold it at 50℃ for 10 minutes until the glaze is completely dry and cured.

[0079] (2) The dried FeNiCrAl alloy was placed in a box-type resistance furnace and fired at 1200℃ for 5 minutes before being removed. The alloy was then cooled to room temperature to obtain a glaze coating.

[0080] Figure 4 The image shows an optical image of the glaze layer prepared in Example 4. The hollow microsphere particles are clearly visible, and the glaze layer adheres well to the alloy.

[0081] Comparative Example 1

[0082] A method for preparing a transparent glaze for FeNiCrAl-based multi-principal-element alloys includes the following steps:

[0083] S1. Weigh 100g of inorganic oxides using an electronic analytical balance, including 54.26g of silicon dioxide, 12.38g of boron trioxide, 6.55g of sodium oxide, 11.32g of potassium oxide, 1.14g of lithium oxide, 3.34g of zirconium dioxide, 10.04g of titanium dioxide, and 2.91g of F2O.

[0084] S2. Weigh 10g of sodium silicate and use a dropper to draw 20ml of deionized water. Stir and mix thoroughly.

[0085] S3. The solid and liquid are mixed evenly according to the ratio of inorganic oxide: hollow glass microspheres: barium oxide: sodium silicate aqueous solution = 5:0:0.5:10 to obtain the glaze.

[0086] A glazing process for FeNiCrAl-based multi-principal-element alloy transparent glaze includes the following steps:

[0087] (1) After holding the FeNiCrAl alloy at 50℃ for 5 minutes, immerse it completely vertically in the above glaze by dipping it in the glaze and leave it for 2-3 seconds. Then take it out and hold it at 50℃ for 60 minutes until the glaze is completely dry and cured.

[0088] (2) The dried FeNiCrAl alloy was placed in a box-type resistance furnace and fired at 1200℃ for 5 minutes before being removed. The alloy was then cooled to room temperature to obtain a glaze coating.

[0089] Figure 5 The image shown is an optical image of the glaze layer obtained without hollow microspheres in Comparative Example 1. It is evident that almost all of the glaze layer has detached. This indicates that hollow microspheres play a crucial role in the glaze layer, primarily by relieving stress and thus preventing glaze detachment.

[0090] Comparative Example 2

[0091] A method for preparing a transparent glaze for FeNiCrAl-based multi-principal-element alloys includes the following steps:

[0092] S1. Weigh 100g of inorganic oxides using an electronic analytical balance, including 54.26g of silicon dioxide, 12.38g of boron trioxide, 6.55g of sodium oxide, 11.32g of potassium oxide, 1.14g of lithium oxide, 3.34g of zirconium dioxide, 10.04g of titanium dioxide, and 2.91g of F2O.

[0093] S2. Weigh 10g of sodium silicate and use a dropper to draw 20ml of deionized water. Stir and mix thoroughly.

[0094] S3. The solid and liquid are mixed evenly according to the ratio of inorganic oxide: hollow glass microspheres: barium oxide: sodium silicate aqueous solution = 5:0.5:0:10 to obtain the glaze.

[0095] A glazing process for FeNiCrAl-based multi-principal-element alloy transparent glaze includes the following steps:

[0096] (1) After holding the FeNiCrAl alloy at 50℃ for 5 minutes, immerse it completely vertically in the above glaze by dipping it in the glaze and leave it for 2-3 seconds. Then take it out and hold it at 50℃ for 60 minutes until the glaze is completely dry and cured.

[0097] (2) The dried FeNiCrAl alloy was placed in a box-type resistance furnace and fired at 1200℃ for 5 minutes before being removed. The alloy was then cooled to room temperature to obtain a glaze coating.

[0098] Figure 6 Optical images of the barium oxide-free glaze prepared for Comparative Example 2 are shown. The left image is before firing, and the right image is after firing, showing a significant reduction in gloss.

[0099] Comparative Example 3

[0100] A method for preparing a transparent glaze for FeNiCrAl-based multi-principal-element alloys includes the following steps:

[0101] S1. Weigh 100g of inorganic oxides using an electronic analytical balance, including 54.26g of silicon dioxide, 12.38g of boron trioxide, 6.55g of sodium oxide, 11.32g of potassium oxide, 1.14g of lithium oxide, 3.34g of zirconium dioxide, 10.04g of titanium dioxide, and 2.91g of F2O.

[0102] S2. Weigh 10g of sodium silicate and use a dropper to draw 20ml of deionized water. Stir and mix thoroughly.

[0103] S3. The solid and liquid are mixed evenly according to the ratio of inorganic oxide: hollow glass microspheres: barium oxide: aqueous solution = 5:0.5:0.5:10 to obtain the glaze.

[0104] A glazing process for FeNiCrAl-based multi-principal-element alloy transparent glaze includes the following steps:

[0105] (1) After holding the FeNiCrAl alloy at 50℃ for 5 minutes, immerse it completely vertically in the above glaze by dipping it in the glaze and leave it for 2-3 seconds. Then take it out and hold it at 50℃ for 60 minutes until the glaze is completely dry and cured.

[0106] (2) The dried FeNiCrAl alloy was placed in a box-type resistance furnace and fired at 1200℃ for 5 minutes before being removed. The alloy was then cooled to room temperature to obtain a glaze coating.

[0107] Figure 7 The image shown is an optical image of the glaze layer obtained without sodium silicate in Comparative Example 3. The right side shows images under a laser confocal microscope at different magnifications, revealing obvious localized flaking characteristics and indicating that the glaze layer cannot completely cover the alloy surface. This confirms the role of the sodium silicate coating: increasing the wettability of the metal surface and the bonding force between the metal substrate and the glaze, forming an alkali metal silicate and gel film.

[0108] Comparative Example 4

[0109] A method for preparing a transparent glaze for FeNiCrAl-based multi-principal-element alloys includes the following steps:

[0110] S1. Weigh 100g of inorganic oxides using an electronic analytical balance, including 54.26g of silicon dioxide, 12.38g of boron trioxide, 6.55g of sodium oxide, 11.32g of potassium oxide, 1.14g of lithium oxide, 3.34g of zirconium dioxide, 10.04g of titanium dioxide, and 2.91g of F2O.

[0111] S2. Weigh 10g of sodium silicate and use a dropper to draw 20ml of deionized water. Stir and mix thoroughly.

[0112] S3. The solid and liquid are mixed evenly according to the ratio of inorganic oxide: hollow glass microspheres: barium oxide: sodium silicate aqueous solution = 5:0:0.5:10 to obtain the glaze.

[0113] A glazing process for FeNiCrAl-based multi-principal-element alloy transparent glaze includes the following steps:

[0114] The FeNiCrAl alloy was completely and vertically immersed in the above glaze using the glaze dipping method, left for 2-3 seconds, and then removed and kept at 50°C for 60 minutes until the glaze was completely dry and cured.

[0115] Figure 8 The images shown are optical images of the glaze layer obtained before firing in Comparative Example 4. The left image shows the glaze layer without preheating, while the right image shows the glaze layer after preheating. It can be seen that the glaze layer without preheating is uneven, exhibiting poor film formation in some areas. This demonstrates that preheating plays a crucial role in glaze preparation. Preheating ensures rapid drying of the glaze layer near the metal surface during glazing, resolving the problem of poor local wetting.

[0116] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, it is intended to include any modifications and variations that fall within the scope of the claims and their equivalents.

Claims

1. A FeNiCrAl-based multi-principal-element alloy transparent glaze, characterized in that, Made from the following ingredients: An aqueous solution of inorganic oxides, hollow glass microspheres, barium oxide, and sodium silicate, wherein the mass ratio of the inorganic oxides, hollow glass microspheres, barium oxide, and sodium silicate aqueous solution is 1~10:0.1~3:0.5~4:2~16; In an aqueous solution of sodium silicate, the mixing ratio of sodium silicate to water is 5~15 g: 10~50 mL; The inorganic oxides are various combinations of silicon dioxide, boron trioxide, sodium oxide, potassium oxide, lithium oxide, zinc oxide, zirconium dioxide, aluminum oxide, titanium dioxide, and F2O.

2. The FeNiCrAl-based multi-principal-element alloy transparent glaze according to claim 1, characterized in that, The hollow glass microspheres have a density of 0.15 g / cc and are white in color.

3. The FeNiCrAl-based multi-principal-element alloy transparent glaze according to claim 1, characterized in that, The purity of barium oxide is 90.00%~99.99%.

4. The FeNiCrAl-based multi-principal-element alloy transparent glaze according to claim 1, characterized in that, The sodium silicate has a modulus of 1 to 2.2 and a purity of analytical grade.

5. A glazing process for a transparent glaze on a FeNiCrAl-based multi-principal-element alloy, characterized in that, Includes the following steps: S1. Weigh the raw materials according to the following proportions: the mixed mass ratio of inorganic oxides, hollow glass microspheres, barium oxide, and sodium silicate aqueous solution is 1~10:0.1~3:0.5~4:2~16; in the sodium silicate aqueous solution, the mixing ratio of sodium silicate to water is 5~15 g:10~50 mL; the inorganic oxides are a combination of silicon dioxide, boron trioxide, sodium oxide, potassium oxide, lithium oxide, zinc oxide, zirconium dioxide, aluminum oxide, titanium dioxide, and F2O. S2. Mix the inorganic oxide, hollow glass microspheres, barium oxide and sodium silicate aqueous solution weighed in S1 evenly to prepare the glaze; S3. Apply the glaze prepared in S2 to the surface of the preheated FeNiCrAl-based multi-principal-element alloy. S4. Solidify the alloy treated in S3; S5. The alloy treated with S4 can be fired at 1000~1300℃.

6. The glazing process according to claim 5, characterized in that, In S3, the alloy is polished and then preheated at a temperature of 30~70ºC for 5~30 min.

7. The glazing process according to claim 5, characterized in that, In S4, the curing temperature is 25~70ºC and the curing time is 5~60 min.

8. The glazing process according to claim 5, characterized in that, In S5, the firing time is 5~60 min.

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