CN116854476A - 一种薄带连铸用碳化钛铝基陶瓷侧封板及制备方法 - Google Patents
一种薄带连铸用碳化钛铝基陶瓷侧封板及制备方法 Download PDFInfo
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- 238000007789 sealing Methods 0.000 title claims abstract description 53
- 239000000919 ceramic Substances 0.000 title claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 30
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000009749 continuous casting Methods 0.000 title claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 71
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 24
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 12
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 12
- 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 11
- 238000003723 Smelting Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000010936 titanium Substances 0.000 claims description 17
- 239000010431 corundum Substances 0.000 claims description 11
- 229910052593 corundum Inorganic materials 0.000 claims description 11
- 238000007731 hot pressing Methods 0.000 claims description 11
- 238000005245 sintering Methods 0.000 claims description 11
- 238000000498 ball milling Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 239000002612 dispersion medium Substances 0.000 claims description 5
- 235000019441 ethanol Nutrition 0.000 claims description 5
- 239000010419 fine particle Substances 0.000 claims description 5
- 238000000875 high-speed ball milling Methods 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
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- 239000007787 solid Substances 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 2
- 239000013535 sea water Substances 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 238000003809 water extraction Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000009977 dual effect Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910020068 MgAl Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- -1 northeast university Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Abstract
本发明属于高温陶瓷技术领域，涉及一种薄带连铸用碳化钛铝基陶瓷侧封板及制备方法。涉及的一种薄带连铸用碳化钛铝基陶瓷侧封板的原料组成为：碳化钛粉、金属铝粉、金属钛粉、电熔氧化镁微粉、电熔氧化铝微粉和碳化硅微粉；原料的粒度均＜10μm；其中，碳化钛粉、金属铝粉、金属钛粉加入量为70wt%‑80wt%；电熔氧化镁微粉的加入量为2wt%‑5wt%、电熔氧化铝微粉的加入量为10wt%‑20wt%，碳化硅微粉的加入量3wt%‑8wt%。本发明兼具金属及陶瓷的双重性能优点，兼具金属的韧性和陶瓷的耐高温、耐氧化、耐腐蚀的综合性能。
Description
技术领域
本发明属于高温陶瓷技术领域，具体涉及一种薄带连铸用碳化钛铝基陶瓷侧封板及制备方法。
背景技术
薄带连铸连轧流程更加简约高效、节能减排效果显著，是一种典型的钢铁绿色制造技术，受到了国际广泛关注和高度重视，涌现如纽柯、新日铁、蒂森克虏伯、浦项、宝钢、东北大学、沙钢等一批工业化技术开发者、实践者，并取得了工业化关键技术的突破，实现了薄带连铸轧技术在钢铁工业的初步应用。薄带连铸侧封技术是制约双辊薄带连铸连轧应用与发展的关键技术之一，而侧封板是侧封技术的核心，其主要作用是与铸辊配合形成熔池，防止钢水侧漏，因被压在铸辊上而承受机械应力、与钢液接触而受到侵蚀、与铸辊和初生坯壳接触而受到磨损，并在与钢液初次接触时受到热冲击，因此要求其具有良好的抗热震性、抗钢液侵蚀性和高温耐磨性。
侧封板材质经历了熔融石英质、碳质、锆质和氮化硼基陶瓷等，当前BN-ZrO2-SiC热压陶瓷侧封板已成为主流，能够较好的满足抗热震性、抗侵蚀性、与摩擦磨损性； h-BN晶粒的片状结构导致烧结过程中容易形成卡片房式结构，导致材料难以烧结致密化，导致其烧结成本较高；BN基侧封板氧化后迅速挥发也导致其抗钢液侵蚀性能不足，尤其是初生凝固壳对BN基侧封板的摩擦磨损是侧封板损毁的关键，因为初生凝固壳温度＞1000℃，BN氧化后耐摩擦磨损性能迅速下降，特别是该区域BN的润滑性无法发挥，导致了侧封板磨损加剧而失效，其与侧封板含量有大量的BN物相有关；因此一款高性能低成本的侧封板将进一步促进薄带连铸更好更快的发展。
发明内容
本发明的目的是提出一种薄带连铸用碳化钛铝基陶瓷侧封板及制备方法，使其能降低侧封板的制备成本，解决侧封板抗初生坯壳摩擦磨损性能不足的问题，同时满足薄带连铸对侧封板抗钢液侵蚀、抗钢液热冲击、耐摩擦摩损性的服役要求。
为完成上述目的本发明采用如下技术方案：
一种薄带连铸用碳化钛铝基陶瓷侧封板，碳化钛铝基陶瓷侧封板的原料组成为：碳化钛粉、金属铝粉、金属钛粉、电熔氧化镁微粉、电熔氧化铝微粉和碳化硅微粉；原料的粒度均＜10μm；其中，碳化钛粉、金属铝粉、金属钛粉加入量为70 wt%-80wt%；电熔氧化镁微粉的加入量为2wt%-5wt%、电熔氧化铝微粉的加入量为10wt%-20wt%，碳化硅微粉的加入量为3wt%-8wt%。
碳化钛粉、金属铝粉、金属钛粉的纯度≥99.5%，三种粉体的摩尔比为2.0：1.1：1。
所述的电熔氧化镁微粉为海水提炼制备，纯度≥99.5%，电熔氧化铝纯度≥99.5%，碳化硅微粉纯度≥99.0 %。
一种薄带连铸用碳化钛铝基陶瓷侧封板的制备方法为：按照上述配比将粉料以及减水剂和高纯刚玉球一起放入聚氨脂球磨罐，并倒入高纯无水乙醇作为分散介质，其中固体粉料：减水剂：刚玉球：乙醇的质量比为1：0.01：3：1；将球磨罐装入行星式球磨机中，设置转速为150r/min，高速球磨2~5h，得到混合均匀的细颗粒料浆；将料浆用托盘盛装后放入鼓风干燥箱内进行干燥，待粉末彻底干燥后过80目筛( 孔径为0.2 mm) ，然后收集粉料并密封保存；将粉料倒入侧封板热压碳纤维模具中，放入真空热压炉中进行焙烧，设置烧结工艺，即在温度为1280-1350℃、氮气氛、压力为20-30MPa 的条件下保温保压1-3h。然后将温度升到1400-1500℃、真空条件下、压力为20-30MPa 的条件下保温保压1-2h，然后样品随炉冷却至室温后，将样品取出进行后续加工，得到Ti3AlC2基陶瓷侧封板。
本发明提出的一种薄带连铸用碳化钛铝基陶瓷侧封板，引入的粉体在热压炉中发生如下反应2TiC + Al + Ti = Ti3AlC2，MgO + Al2O3 = MgAl2O4；上述反应形成大量的Ti3AlC2以及少量的MgAl2O4，形成了Ti3AlC2基陶瓷材料，Ti3AlC2属于三元层状化合物MAX相，所具有的独特的晶体结构使其兼具金属及陶瓷的双重性能优点，兼具金属的韧性和陶瓷的耐高温、耐氧化、耐腐蚀的综合性能，以及一些其他的特性，如优良的自润滑性能、氧化环境的损伤自修复性能；本发明所述的碳化钛铝基陶瓷侧封板在烧结过程中形成的尖晶石与刚玉有利进下强增侧封板的结构强度和提高耐磨性，同时也有利于提高侧封板熔池区域的抗钢液侵蚀性；包括尖晶石可以固熔钢液中的FeO等强侵蚀性物质；SiC作为调控Ti3AlC2硬度从而提高耐铸辊摩擦磨损性能；
本发明所述的Ti3AlC2物相较BN有相似的润滑性能，铸辊区域温度较低，Ti3AlC2不会发生氧化，其润滑性能可能充分保证铸辊侧端的安全运转，即便是在其它高温区域，其抗氧化性能优于BN，本发明所述的粉体烧结温度低，能够显著降低烧成温度，而BN因其鳞片卡房结构难以烧结性差，本发明所述的Ti3AlC2基陶瓷侧封板不含有ZrO2，避免BN基陶瓷侧封板熔池工作层因ZrO2液相烧结长大形成渣团。
本发明所述Ti3AlC2基侧封板被初生凝固壳侵蚀后，在工作面能够形成TiO2以及Al2O3陶瓷膜，特别是两者自身也可以进一步反应形成Al2TiO5，Al2TiO5也属于耐火物相，同时Al2O3也可以进一步固溶到尖晶石体系中，因此Ti3AlC2氧化后物质基体结合性能好，抗侵蚀性与耐磨性优异，相较于BN基侧封板形成的B2O3液膜，耐摩擦磨损性大大提高，进而提高现有侧封板的服役寿命，使得侧封板服役寿命从现有的6炉提升至8炉及以上。
实施方式
结合具体实施例对本发明加以详细说明：
实施例
一种碳化钛铝基陶瓷侧封板组成（质量分数）如下：碳化钛粉、金属铝粉、金属钛粉合计70%（三种粉体摩尔比2.0：1.1：1），电熔氧化镁微粉5%、电熔氧化铝微粉20%、碳化硅微粉5%。按照上述配比将粉料以及减水剂和高纯刚玉球一起放入聚氨脂球磨罐，并倒入高纯无水乙醇作为分散介质，其中固体粉料：分散剂：刚玉球：乙醇的质量比为1：0.01：3：1。将球磨罐装入行星式球磨机中，设置转速为150r/min，高速球磨5h，得到混合均匀的细颗粒料浆。将料浆用托盘盛装后放入鼓风干燥箱内进行干燥，待粉末彻底干燥后过80目筛( 孔径为0.2 mm) ，然后收集粉料并密封保存。将粉料倒入侧封板热压碳纤维模具中，放入真空热压炉中进行焙烧，设置烧结工艺，即在温度为1350℃、氮气氛、压力为30 MPa 的条件下保温保压1h。然后将温度升到1400℃、真空条件下、压力为30MPa 的条件下保温保压2h，然后样品随炉冷却至室温后，将样品取出进行后续加工，得到Ti3AlC2基陶瓷侧封板。
实施例
一种Ti3AlC2基陶瓷侧封板组成（质量分数）如下：碳化钛粉、金属铝粉、金属钛粉合计80%（三种粉体摩尔比2.0：1.1：1），电熔氧化镁微粉2%、电熔氧化铝微粉10%、碳化硅微粉8%。按照上述配比将粉料以及减水剂和高纯刚玉球一起放入聚氨脂球磨罐，并倒入高纯无水乙醇作为分散介质，其中固体粉料：分散剂：刚玉球：乙醇的质量比为1：0.01：3：1。将球磨罐装入行星式球磨机中，设置转速为150r/min，高速球磨3h，得到混合均匀的细颗粒料浆。将料浆用托盘盛装后放入鼓风干燥箱内进行干燥，待粉末彻底干燥后过80目筛( 孔径为0.2 mm) ，然后收集粉料并密封保存。将粉料倒入侧封板热压碳纤维模具中，放入真空热压炉中进行焙烧，设置烧结工艺，即在温度为1280℃、氮气氛、压力为30 MPa 的条件下保温保压1h。然后将温度升到1500℃、真空条件下、压力为20MPa 的条件下保温保压1h，然后样品随炉冷却至室温后，将样品取出进行后续加工，得到Ti3AlC2基陶瓷侧封板。
实施例
一种Ti3AlC2基陶瓷侧封板组成（质量分数）如下：碳化钛粉、金属铝粉、金属钛粉合计78%（三种粉体摩尔比2.0：1.1：1），电熔氧化镁微粉3%、电熔氧化铝微粉16%、碳化硅微粉3%。按照上述配比将粉料以及减水剂和高纯刚玉球一起放入聚氨脂球磨罐，并倒入高纯无水乙醇作为分散介质，其中固体粉料：分散剂：刚玉球：乙醇的质量比为1：0.01：3：1。将球磨罐装入行星式球磨机中，设置转速为150r/min，高速球磨2h，得到混合均匀的细颗粒料浆。将料浆用托盘盛装后放入鼓风干燥箱内进行干燥，待粉末彻底干燥后过80目筛( 孔径为0.2 mm) ，然后收集粉料并密封保存。将粉料倒入侧封板热压碳纤维模具中，放入真空热压炉中进行焙烧，设置烧结工艺，即在温度为1300℃、氮气氛、压力为25MPa 的条件下保温保压2h。然后将温度升到1450℃、真空条件下、压力为25MPa 的条件下保温保压1.5h，然后样品随炉冷却至室温后，将样品取出进行后续加工，得到Ti3AlC2基陶瓷侧封板。
Claims (4)
1.一种薄带连铸用碳化钛铝基陶瓷侧封板，其特征在于：Ti3AlC2基陶瓷侧封板的原料组成为：碳化钛粉、金属铝粉、金属钛粉、电熔氧化镁微粉、电熔氧化铝微粉和碳化硅微粉；原料的粒度均＜10μm；其中，碳化钛粉、金属铝粉、金属钛粉加入量为70wt%-80wt%；电熔氧化镁微粉的加入量为2wt%-5wt%、电熔氧化铝微粉的加入量为10wt%-20wt%，碳化硅微粉的加入量3wt%-8wt%。
2.一种薄带连铸用碳化钛铝基陶瓷侧封板，其特征在于：碳化钛粉、金属铝粉、金属钛粉的纯度≥99.5%，三种粉体的摩尔比为2.0：1.1：1。
3.一种薄带连铸用碳化钛铝基陶瓷侧封板，其特征在于：所述的电熔氧化镁微粉为海水提炼制备，纯度≥99.5%，电熔氧化铝纯度≥99.5%，碳化硅微粉纯度≥99.0 %。
4.制备权利要求1-3任一所述一种薄带连铸用碳化钛铝基陶瓷侧封板的制备方法，其特征在于：按照上述配比将粉料以及减水剂和高纯刚玉球一起放入聚氨脂球磨罐，并倒入高纯无水乙醇作为分散介质，其中固体粉料：减水剂：刚玉球：乙醇的质量比为1：0.01：3：1；将球磨罐装入行星式球磨机中，设置转速为150r/min，高速球磨2~5h，得到混合均匀的细颗粒料浆；将料浆用托盘盛装后放入鼓风干燥箱内进行干燥，待粉末彻底干燥后过80目筛，然后收集粉料并密封保存；将粉料倒入侧封板热压碳纤维模具中，放入真空热压炉中进行焙烧，设置烧结工艺，即在温度为1280-1350℃、氮气氛、压力为20-30MPa 的条件下保温保压1-3h。然后将温度升到1400-1500℃、真空条件下、压力为20-30MPa 的条件下保温保压1-2h，然后样品随炉冷却至室温后，将样品取出进行后续加工，得到碳化钛铝基陶瓷侧封板。
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