CN113666758A - 一种镁碳砖用抗氧化涂层及其制备方法 - Google Patents
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- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 228
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 114
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 239000011449 brick Substances 0.000 title claims abstract description 87
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 87
- 238000000576 coating method Methods 0.000 title claims abstract description 51
- 239000011248 coating agent Substances 0.000 title claims abstract description 50
- 239000003963 antioxidant agent Substances 0.000 title claims abstract description 41
- 230000003078 antioxidant effect Effects 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 68
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000002994 raw material Substances 0.000 claims abstract description 26
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052796 boron Inorganic materials 0.000 claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 25
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000003647 oxidation Effects 0.000 claims abstract description 20
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 16
- 238000000498 ball milling Methods 0.000 claims abstract description 14
- 239000007767 bonding agent Substances 0.000 claims abstract description 13
- 229910020968 MoSi2 Inorganic materials 0.000 claims abstract description 4
- QXYJCZRRLLQGCR-UHFFFAOYSA-N molybdenum(IV) oxide Inorganic materials O=[Mo]=O QXYJCZRRLLQGCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000002699 waste material Substances 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 14
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 238000009991 scouring Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 229910016006 MoSi Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910021343 molybdenum disilicide Inorganic materials 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910003470 tongbaite Inorganic materials 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明涉及一种镁碳砖用抗氧化涂层及其制备方法。其技术方案是：以84.0～94.0wt％的硅钼棒回收料、1.0～5.0wt％的镁碳砖回收料、3.0～6.0wt％的可水合氧化铝、1.0～3.0wt％的电熔镁砂和1.0～2.0wt％的硼玻璃回收料为原料，外加所述原料12.2～13.4wt％的结合剂，行星球磨30～40min，即得镁碳砖用抗氧化涂层。所述硅钼棒回收料的主要化学成分是：MoSi2含量≥98.0wt％，SiO2含量≤1.1wt％，MoO2含量≤0.6wt％。本发明具有环境友好、工艺简单和成本低廉的特点；所制备的镁碳砖用抗氧化涂层的界面结合强度高、抗氧化性优良、耐冲刷性好和使用寿命长，产业化前景大。
Description
技术领域
本发明属于抗氧化涂层技术领域。具体涉及一种镁碳砖用抗氧化涂层及其制备方法。
背景技术
镁碳砖是20世纪70年代开发的耐火材料，具有优异的抗热震性能、抗渣侵蚀性能和抗渣渗透性能，广泛应用于钢水的精炼连铸流程。随着市场对特殊钢种的需求和炉外精炼工艺的发展，现有的镁碳砖由于存在钢水大量增碳、氧化失效等问题已不能满足一些特殊冶炼工艺的需求。目前，如何优化提升镁碳砖的抗氧化能力已成为国内外的热点研究方向之一。
如“一种镁碳砖无铝抗氧化涂层的制备方法”(CN101928480A)专利技术，该技术以硼玻璃、碳化硅、熔融石英、电熔镁砂、氧化钙和羧甲基纤维素为原料，以硅溶胶、水玻璃和水为结合剂，均匀混合，制得镁碳砖无铝抗氧化涂层，该技术中的氧化钙及羧甲基纤维素均为极易水化的物质，容易在涂层中形成水化裂纹，且水玻璃引入的Na元素对高温使用性能不利。
如“一种耐高温镁碳砖高性能抗氧化涂料及其检测方法”(CN111454595A)专利技术，该技术以硅酸钠溶液、氧化铝、二氧化硅、碳化硅、硼玻璃和二氧化钛为原料，均匀混合，制得镁碳砖抗氧化涂料，该技术中所引入的碳化硅抗氧化性不佳，且硅酸钠引入Na元素对高温使用性能不利。
如“镁碳砖用新型防氧化剂的制备、性能及应用”(第十七届全国耐火材料青年学术报告会论文集)文献，公开了一种碳化铬为原料制备镁碳砖抗氧化涂料的方法，该方法中所引入的碳化铬使用过程中易被氧化为具有毒性的六价铬(Cr6+)，易对环境造成污染。
发明内容
本发明旨在克服现有技术缺陷，目的是提供一种环境友好、工艺简单和成本低廉的镁碳砖用抗氧化涂层的制备方法；用该法所制备的镁碳砖用抗氧化涂层的界面结合强度高、抗氧化性优良、抗冲刷性好和使用寿命长，产业化前景大。
为实现上述目的，本发明所采用的技术方案是：以84.0～94.0wt％的硅钼棒回收料、1.0～5.0wt％的镁碳砖回收料、3.0～6.0wt％的可水合氧化铝、1.0～3.0wt％的电熔镁砂和1.0～2.0wt％的硼玻璃回收料为原料，外加所述原料12.2～13.4wt％的结合剂，行星球磨30～40min，即得镁碳砖用抗氧化涂层。
所述硅钼棒回收料是将废弃的硅钼棒经剔除蚀变层、破碎和筛分后得到的粒径小于0.088mm的粉料；所述硅钼棒回收料的主要化学成分是：MoSi2含量≥98.0wt％，SiO2含量≤1.1wt％，MoO2含量≤0.6wt％。
所述镁碳砖回收料是将废弃的镁碳砖经剔除蚀变层、破碎和筛分后得到的粒径小于0.088mm的粉料；所述镁碳砖回收料的主要化学成分是：MgO含量≥85.0wt％，CaO含量≤1.1wt％，SiO2含量≤1.5wt％，Fe2O3含量≤0.7wt％，IL≤3.9wt％。
所述可水合氧化铝的粒径小于0.088mm；可水合氧化铝的主要化学成分是：Al2O3含量≥79.0wt％，IL≤18.5wt％。
所述电熔镁砂的粒径小于0.088mm；所述电熔镁砂的主要化学成分是：MgO含量≥97.3wt％，IL≤0.5wt％。
所述硼玻璃回收料是将废弃的硼玻璃经破碎和筛分后得到的粒径小于0.044mm颗粒料；硼玻璃回收料的主要化学成分是：SiO2含量≥78.0wt％，B2O3含量≥20.6wt％。
所述结合剂为聚乙烯醇水溶液、或为聚乙烯吡咯烷酮水溶液。
由于采用上述技术方案，本发明与现有技术相比具有以下积极效果：
1、本发明采用的硅钼棒回收料、镁碳砖回收料和硼玻璃回收料等废料的使用率≥90％，不仅有助于解决硅钼棒回收料等废料大量堆积的占地和环境污染的问题，绿色环保，且实现了二次资源的有效利用，成本低廉。
2、本发明仅以硅钼棒回收料、镁碳砖回收料、可水合氧化铝、电熔镁砂和硼玻璃回收料为原料，外加结合剂，行星球磨，即得镁碳砖用抗氧化涂层，制备工艺简单；本发明通过行星球磨将可水合氧化铝和电熔镁砂等释放的大量羟基-OH与硅钼棒回收料和镁碳砖回收料化学键合，制得的镁碳砖用抗氧化涂层性能优越，具有很大的产业化前景。
3、本发明以制备高温抗氧化涂层的方式回收使用废弃硅钼棒，硅钼棒中的主要成分为二硅化钼(MoSi2)，含钼量达63wt％；硅钼棒中的MoSi2能与镁碳砖中的C形成陶瓷结合，在优化镁碳砖抗氧化性的同时，涂层与镁碳砖本体之间的界面结合强度也得到显著提高。在利用废弃硅钼棒的同时，能有效提高镁碳砖用抗氧化涂层的抗氧化性能。在保证镁碳砖较高的强度、高耐侵蚀性和高耐冲刷性等一系列性能的前提条件下，还能优化镁碳砖的抗氧化性能和延长使用寿命。
因此，本发明具有环境友好、工艺简单和成本低廉的特点；所制备的镁碳砖用抗氧化涂层的界面结合强度高、抗氧化性优良、耐冲刷性好和使用寿命长，产业化前景大。
具体实施方式
下面结合具体实施方式对本发明做进一步的描述，并非对本发明保护范围的限制。
一种镁碳砖用抗氧化涂层及其制备方法。以84.0～94.0wt％的硅钼棒回收料、1.0～5.0wt％的镁碳砖回收料、3.0～6.0wt％的可水合氧化铝、1.0～3.0wt％的电熔镁砂和1.0～2.0wt％的硼玻璃回收料为原料，外加所述原料12.2～13.4wt％的结合剂，行星球磨30～40min，即得镁碳砖用抗氧化涂层。
所述结合剂为聚乙烯醇水溶液、或为聚乙烯吡咯烷酮水溶液。
本具体实施方式中：
所述硅钼棒回收料是将废弃的硅钼棒经剔除蚀变层、破碎和筛分后得到的粒径小于0.088mm的粉料；所述硅钼棒回收料的主要化学成分是：MoSi2含量≥98.0wt％，SiO2含量≤1.1wt％，MoO2含量≤0.6wt％。
所述镁碳砖回收料是将废弃的镁碳砖经剔除蚀变层、破碎和筛分后得到的粒径小于0.088mm的粉料；所述镁碳砖回收料的主要化学成分是：MgO含量≥85.0wt％，CaO含量≤1.1wt％，SiO2含量≤1.5wt％，Fe2O3含量≤0.7wt％，IL≤3.9wt％。
所述可水合氧化铝的粒径小于0.088mm；可水合氧化铝的主要化学成分是：Al2O3含量≥79.0wt％，IL≤18.5wt％。
所述电熔镁砂的粒径小于0.088mm；所述电熔镁砂的主要化学成分是：MgO含量≥97.3wt％，IL≤0.5wt％。
所述硼玻璃回收料是将废弃的硼玻璃经破碎和筛分后得到的粒径小于0.044mm颗粒料；硼玻璃回收料的主要化学成分是：SiO2含量≥78.0wt％，B2O3含量≥20.6wt％。
实施例中不再赘述。
实施例1
一种镁碳砖用抗氧化涂层及其制备方法。以84.0wt％的硅钼棒回收料、5.0wt％的镁碳砖回收料、6.0wt％的可水合氧化铝、3.0wt％的电熔镁砂和2.0wt％的硼玻璃回收料为原料，外加所述原料12.2wt％的结合剂，行星球磨30min，即得镁碳砖用抗氧化涂层。
所述结合剂为聚乙烯醇水溶液。
实施例2
一种镁碳砖用抗氧化涂层及其制备方法。以86.0wt％的硅钼棒回收料、5.0wt％的镁碳砖回收料、5.0wt％的可水合氧化铝、2.5.0wt％的电熔镁砂和1.5wt％的硼玻璃回收料为原料，外加所述原料12.5wt％的结合剂，行星球磨32min，即得镁碳砖用抗氧化涂层。
所述结合剂为聚乙烯醇水溶液。
实施例3
一种镁碳砖用抗氧化涂层及其制备方法。以88.0wt％的硅钼棒回收料、4.0wt％的镁碳砖回收料、4.5wt％的可水合氧化铝、2.5wt％的电熔镁砂和1.0wt％的硼玻璃回收料为原料，外加所述原料13.2wt％的结合剂，行星球磨34min，即得镁碳砖用抗氧化涂层。
所述结合剂为聚乙烯吡咯烷酮水溶液。
实施例4
一种镁碳砖用抗氧化涂层及其制备方法。以90.0wt％的硅钼棒回收料、3.0wt％的镁碳砖回收料、4.0wt％的可水合氧化铝、2.0wt％的电熔镁砂和1.0wt％的硼玻璃回收料为原料，外加所述原料12.8wt％的结合剂，行星球磨36min，即得镁碳砖用抗氧化涂层。
所述结合剂为聚乙烯吡咯烷酮水溶液。
实施例5
一种镁碳砖用抗氧化涂层及其制备方法。以92.0wt％的硅钼棒回收料、2.0wt％的镁碳砖回收料、3.0wt％的可水合氧化铝、1.5wt％的电熔镁砂和1.5wt％的硼玻璃回收料为原料，外加所述原料13.4wt％的结合剂，行星球磨40min，即得镁碳砖用抗氧化涂层。
所述结合剂为聚乙烯吡咯烷酮水溶液。
实施例6
一种镁碳砖用抗氧化涂层及其制备方法。以94.0wt％的硅钼棒回收料、1.0wt％的镁碳砖回收料、3.0wt％的可水合氧化铝、1.0wt％的电熔镁砂和1.0wt％的硼玻璃回收料为原料，外加所述原料13.1wt％的结合剂，行星球磨38min，即得镁碳砖用抗氧化涂层。
所述结合剂为聚乙烯醇水溶液。
本具体实施方式与现有技术相比具有以下积极效果：
1、本具体实施方式采用的硅钼棒回收料、镁碳砖回收料和硼玻璃回收料等废料的使用率≥90％，不仅有助于解决硅钼棒回收料等废料大量堆积的占地和环境污染的问题，绿色环保，且实现了二次资源的有效利用，成本低廉。
2、本具体实施方式仅以硅钼棒回收料、镁碳砖回收料、可水合氧化铝、电熔镁砂和硼玻璃回收料为原料，外加结合剂，行星球磨，即得镁碳砖用抗氧化涂层，制备工艺简单；本具体实施方式通过行星球磨将可水合氧化铝和电熔镁砂等释放的大量羟基-OH与硅钼棒回收料和镁碳砖回收料化学键合，制得的镁碳砖用抗氧化涂层性能优越，具有很大的产业化前景。
3、本具体实施方式以制备高温抗氧化涂层的方式回收使用废弃硅钼棒，硅钼棒中的主要成分为二硅化钼(MoSi2)，含钼量达63wt％；硅钼棒中的MoSi2能与镁碳砖中的C形成陶瓷结合，在优化镁碳砖抗氧化性的同时，涂层与镁碳砖本体之间的界面结合强度也得到显著提高。在利用废弃硅钼棒的同时，能有效提高镁碳砖用抗氧化涂层的抗氧化性能。在保证镁碳砖较高的强度、高耐侵蚀性和高耐冲刷性等一系列性能的前提条件下，还能优化镁碳砖的抗氧化性能和延长使用寿命。
因此，本具体实施方式具有环境友好、工艺简单和成本低廉的特点；所制备的镁碳砖用抗氧化涂层的界面结合强度高、抗氧化性优良、耐冲刷性好和使用寿命长，产业化前景大。
Claims (8)
1.一种镁碳砖用抗氧化涂层的制备方法，其特征在于：以84.0～94.0wt％的硅钼棒回收料、1.0～5.0wt％的镁碳砖回收料、3.0～6.0wt％的可水合氧化铝、1.0～3.0wt％的电熔镁砂和1.0～2.0wt％的硼玻璃回收料为原料，外加所述原料12.2～13.4wt％的结合剂，行星球磨30～40min，即得镁碳砖用抗氧化涂层。
2.根据权利要求1所述的镁碳砖用抗氧化涂层的制备方法，其特征在于所述硅钼棒回收料是将废弃的硅钼棒经剔除蚀变层、破碎和筛分后得到的粒径小于0.088mm的粉料；所述硅钼棒回收料的主要化学成分是：MoSi2含量≥98.0wt％，SiO2含量≤1.1wt％，MoO2含量≤0.6wt％。
3.根据权利要求1所述的镁碳砖用抗氧化涂层的制备方法，其特征在于所述镁碳砖回收料是将废弃的镁碳砖经剔除蚀变层、破碎和筛分后得到的粒径小于0.088mm的粉料；所述镁碳砖回收料的主要化学成分是：MgO含量≥85.0wt％，CaO含量≤1.1wt％，SiO2含量≤1.5wt％，Fe2O3含量≤0.7wt％，IL≤3.9wt％。
4.根据权利要求1所述的镁碳砖用抗氧化涂层的制备方法，其特征在于所述可水合氧化铝的粒径小于0.088mm；可水合氧化铝的主要化学成分是：Al2O3含量≥79.0wt％，IL≤18.5wt％。
5.根据权利要求1所述的镁碳砖用抗氧化涂层的制备方法，其特征在于所述电熔镁砂的粒径小于0.088mm；所述电熔镁砂的主要化学成分是：MgO含量≥97.3wt％，IL≤0.5wt％。
6.根据权利要求1所述的镁碳砖用抗氧化涂层的制备方法，其特征在于所述硼玻璃回收料是将废弃的硼玻璃经破碎和筛分后得到的粒径小于0.044mm颗粒料；硼玻璃回收料的主要化学成分是：SiO2含量≥78.0wt％，B2O3含量≥20.6wt％。
7.根据权利要求1所述的镁碳砖用抗氧化涂层的制备方法，其特征在于所述结合剂为聚乙烯醇水溶液、或为聚乙烯吡咯烷酮水溶液。
8.一种镁碳砖用抗氧化涂层，所述的镁碳砖用抗氧化涂层是根据权利要求1～7项中任一项所述的镁碳砖用抗氧化涂层的制备方法所制得的镁碳砖用抗氧化涂层。
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