CN116789458A - 一种晶须增强的耐火材料及其制备方法 - Google Patents
一种晶须增强的耐火材料及其制备方法 Download PDFInfo
- Publication number
- CN116789458A CN116789458A CN202310820534.8A CN202310820534A CN116789458A CN 116789458 A CN116789458 A CN 116789458A CN 202310820534 A CN202310820534 A CN 202310820534A CN 116789458 A CN116789458 A CN 116789458A
- Authority
- CN
- China
- Prior art keywords
- whisker
- titanium boride
- refractory material
- graphite
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011819 refractory material Substances 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 68
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 68
- 239000010936 titanium Substances 0.000 claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 41
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 40
- 229910002804 graphite Inorganic materials 0.000 claims description 40
- 239000010439 graphite Substances 0.000 claims description 40
- 239000000203 mixture Substances 0.000 claims description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 17
- 238000005245 sintering Methods 0.000 claims description 17
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 27
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 19
- 238000010791 quenching Methods 0.000 description 9
- 230000000171 quenching effect Effects 0.000 description 9
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- 238000000748 compression moulding Methods 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- PUAQLLVFLMYYJJ-UHFFFAOYSA-N 2-aminopropiophenone Chemical compound CC(N)C(=O)C1=CC=CC=C1 PUAQLLVFLMYYJJ-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- RWDBMHZWXLUGIB-UHFFFAOYSA-N [C].[Mg] Chemical compound [C].[Mg] RWDBMHZWXLUGIB-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3804—Borides
- C04B2235/3813—Refractory metal borides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/402—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/425—Graphite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/526—Fibers characterised by the length of the fibers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5276—Whiskers, spindles, needles or pins
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
本发明属于耐火材料领域。更具体地，尤其是涉及一种晶须增强的耐火材料及其制备方法。本发明一种晶须增强的耐火材料，将特定尺寸的硼化钛晶须加入，改善了耐火材料的强韧性、抗热震性。控制硼化钛晶须含量，更有利于硼化钛晶须发挥作用。AlN与硼化钛晶须提高了各物相的结合力，有效的改善耐火材料的强韧性。本发明制得的硼化钛晶须增强耐火材料常温下的抗折强度、耐压强度，1400℃下高温抗折强度，断裂韧性，抗热震性都有大幅度提高，耐火材料综合性能优异。
Description
技术领域
本发明属于耐火材料领域。更具体地，尤其是涉及一种晶须增强的耐火材料及其制备方法。
背景技术
耐火材料常用于冶金设备中，这类耐火材料一方面要求有高的强度，另外还需要良好的抗热震性能、抗氧化性能和高的致密性。现有的耐火材料还存在不同的问题，如镁碳耐火材料会消耗较多的石墨资源，热导率过高导致热损耗较多。铝碳质耐火材料存在制备工艺复杂，抗折强度还有待提高等问题。如专利文献1（CN112811917A）中制备工艺成本过高、晶须加入后强度提高不明显的问题。专利文献2（CN112745137A）中存在致密度不够、耐压强度较低、抗热震性能不够等问题。
Al2O3-C耐火材料是含碳耐火材料，需要进一步改进Al2O3-C耐火材料的强度、抗热震性能、抗氧化性能和致密性。
发明内容
本发明要解决的技术问题是克服现有铝碳质耐火材料强度不高，抗热震性能较差，致密性较低，断裂韧性低的缺陷和不足，提供一种晶须增强的耐火材料及其制备方法。
本发明的目的是提供一种晶须增强的耐火材料，以解决现有技术中铝碳质耐火材料强度不高，抗热震性能较差，致密性较低，断裂韧性低的缺陷和不足的问题。
本发明上述目的通过以下技术方案实现：
一种晶须增强的耐火材料，其特征在于，原料以质量百分比计，Al2O3为75-85%，石墨为6-9%，硼化钛晶须为2-5%，SiO2为3-6%，Al粉为1-3%；将Al2O3、石墨、硼化钛晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量5-8%的水，在40-50MPa下压制成型，100-120℃干燥6-10h，在氮气气氛中1150-1300℃烧结0.5-0.8h，得到晶须增强的耐火材料；其中，Al2O3的粒径为5-10um，石墨的粒径为8-12um，SiO2、Al粉的粒径为15-20um；硼化钛晶须的长度为10-14mm，直径为0.2-0.3mm；长径比为40-60。
所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5%。
一种晶须增强的耐火材料的制备方法，其特征在于，原料以质量百分比计，Al2O3为75-85%，石墨为6-9%，硼化钛晶须为2-5%，SiO2为3-6%，Al粉为1-3%；将Al2O3、石墨、硼化钛晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量5-8%的水，在40-50MPa下压制成型，100-120℃干燥6-10h，在氮气气氛中1150-1300℃烧结0.5-0.8h，得到晶须增强的耐火材料；其中，Al2O3的粒径为5-10um，石墨的粒径为8-12um，SiO2、Al粉的粒径为15-20um；硼化钛晶须的长度为10-14mm，直径为0.2-0.3mm；长径比为40-60。
所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5%。
本申请中硼化钛晶须含量过多，将降低晶须和基体材料之间的界面的结合，不利于硼化钛晶须发挥作用。硼化钛晶须含量过少，难以体现加入硼化钛晶须的优势。
特别地，硼化钛晶须含量为3.2%时，更有利于发挥硼化钛晶须的作用。
本申请中特定尺寸的硼化钛晶须加入，可以大大改善耐火材料的强韧性、抗热震性。硼化钛晶须还能显著提高耐火材料的高温力学性能。
控制硼化钛晶须的长度在10-14mm，直径为0.2-0.3mm；长径比为40-60，能很好地分散晶须分布、降低烧结温度。
硼化钛晶须的长径比过低或过高，难以发挥硼化钛晶须在耐火材料中的优良的特性。
特别地，硼化钛晶须的长度为12mm，直径为0.25mm；长径比为48时，耐火材料的常温下的抗折强度、耐压强度，1400℃下高温抗折强度，断裂韧性，抗热震性能更好。
Al粉在氮气气氛中与氮反应可生成AlN，与硼化钛晶须进一步增加耐火材料的强韧性、抗热震性和致密度。AlN与硼化钛晶须提高了各物相的结合力，有效的改善耐火材料的强韧性。过高的烧结温度和烧结时间，会导致耐火材料的抗热震性降低，韧性也有所降低，并且不利于降低成本。过低的烧结温度难以获得充分均匀分布的AlN，AlN与硼化钛晶须的结合难以配合，无法充分发挥晶须的改善耐火材料的强韧性、抗热震性作用。
特别地，Al粉含量为2%，在氮气气氛中1200℃烧结0.6h时，耐火材料的常温下的抗折强度、耐压强度，1400℃下高温抗折强度，断裂韧性，抗热震性能更好，致密度更高。
本发明制得的硼化钛晶须增强耐火材料经检测，相对密度≥90%，常温下的抗折强度为48-60MPa，常温下的耐压强度为150-170MPa；1400℃下高温抗折强度为32-40MPa。断裂韧性为7.1-9.5MPa·m1/2。抗热震性：1100℃至冷水中急冷次数≥40次。
本发明具有以下有益效果：
本申请中特定尺寸的硼化钛晶须加入，改善了耐火材料的强韧性、抗热震性。控制硼化钛晶须含量，更有利于硼化钛晶须发挥作用。硼化钛晶须含量为3.2%时，更有利于发挥硼化钛晶须的作用。
AlN与硼化钛晶须提高了各物相的结合力，有效的改善耐火材料的强韧性。Al粉含量为2%，在氮气气氛中1200℃烧结0.6h时，耐火材料的常温下的抗折强度、耐压强度，1400℃下高温抗折强度，断裂韧性，抗热震性能更好，致密度更高。
本发明制得的硼化钛晶须增强耐火材料常温下的抗折强度、耐压强度，1400℃下高温抗折强度，断裂韧性，抗热震性都有大幅度提高，耐火材料综合性能优异。
实施方式
以下通过实施例形式的具体实施方式，对本发明的上述内容作进一步的详细说明。但具体实施方式本质上被认为是例示性的而非限制性的。
实施例1
一种晶须增强的耐火材料，其特征在于，原料以质量百分比计，Al2O3为77%，石墨为9%，硼化钛晶须为5%，SiO2为6%，Al粉为3%；将Al2O3、石墨、硼化钛晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量5%的水，在40MPa下压制成型，120℃干燥6h，在氮气气氛中1150℃烧结0.8h，得到晶须增强的耐火材料；其中，Al2O3的粒径为5um，石墨的粒径为12um，SiO2、Al粉的粒径为20um；硼化钛晶须的长度为12mm，直径为0.3mm；长径比为40。
所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5%；
对制备得到的硼化钛晶须增强耐火材料进行测试，相对密度90%，常温下的抗折强度为48MPa，常温下的耐压强度为152MPa；1400℃下高温抗折强度为32MPa。断裂韧性为7.1MPa·m1/2。抗热震性：1100℃至冷水中急冷次数为40次。
实施例2
一种晶须增强的耐火材料，其特征在于，原料以质量百分比计，Al2O3为85%，石墨为6%，硼化钛晶须为2%，SiO2为6%，Al粉为1%；将Al2O3、石墨、硼化钛晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量8%的水，在50MPa下压制成型，100℃干燥10h，在氮气气氛中1300℃烧结0.5h，得到晶须增强的耐火材料；其中，Al2O3的粒径为10um，石墨的粒径为8um，SiO2、Al粉的粒径为15um；硼化钛晶须的长度为12mm，直径为0.2mm；长径比为60。
所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5%；
对制备得到的硼化钛晶须增强耐火材料进行测试，相对密度91%，常温下的抗折强度为50MPa，常温下的耐压强度为150MPa；1400℃下高温抗折强度为34MPa。断裂韧性为7.3MPa·m1/2。抗热震性：1100℃至冷水中急冷次数42次。
实施例3
一种晶须增强的耐火材料，其特征在于，原料以质量百分比计，Al2O3为83.3%，石墨为8%，硼化钛晶须为3.2%，SiO2为4%，Al粉为1.5%；将Al2O3、石墨、硼化钛晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量6%的水，在45MPa下压制成型，110℃干燥8h，在氮气气氛中1300℃烧结0.5h，得到晶须增强的耐火材料；其中，Al2O3的粒径为8um，石墨的粒径为10um，SiO2、Al粉的粒径为16um；硼化钛晶须的长度为12mm，直径为0.2mm；长径比为60。
所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5%；
对制备得到的硼化钛晶须增强耐火材料进行测试，相对密度92%，常温下的抗折强度为55MPa，常温下的耐压强度为159MPa；1400℃下高温抗折强度为36MPa。断裂韧性为7.8MPa·m1/2。抗热震性：1100℃至冷水中急冷次数45次。
实施例4
一种晶须增强的耐火材料，其特征在于，原料以质量百分比计，Al2O3为83.3%，石墨为8%，硼化钛晶须为3.2%，SiO2为4%，Al粉为1.5%；将Al2O3、石墨、硼化钛晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量6%的水，在45MPa下压制成型，110℃干燥8h，在氮气气氛中1300℃烧结0.5h，得到晶须增强的耐火材料；其中，Al2O3的粒径为8um，石墨的粒径为10um，SiO2、Al粉的粒径为16um；硼化钛晶须的长度为12mm，直径为0.25mm；长径比为48。
所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5%；
对制备得到的硼化钛晶须增强耐火材料进行测试，相对密度92%，常温下的抗折强度为58MPa，常温下的耐压强度为164MPa；1400℃下高温抗折强度为38MPa。断裂韧性为8.6MPa·m1/2。抗热震性：1100℃至冷水中急冷次数47次。
实施例5
一种晶须增强的耐火材料，其特征在于，原料以质量百分比计，Al2O3为82.8%，石墨为8%，硼化钛晶须为3.2%，SiO2为4%，Al粉为2%；将Al2O3、石墨、硼化钛晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量6%的水，在45MPa下压制成型，110℃干燥8h，在氮气气氛中1200℃烧结0.6h，得到晶须增强的耐火材料；其中，Al2O3的粒径为8um，石墨的粒径为10um，SiO2、Al粉的粒径为16um；硼化钛晶须的长度为12mm，直径为0.25mm；长径比为48。
所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5%；
对制备得到的硼化钛晶须增强耐火材料进行测试，相对密度94%，常温下的抗折强度为60MPa，常温下的耐压强度为170MPa；1400℃下高温抗折强度为40MPa。断裂韧性为9.5MPa·m1/2。抗热震性：1100℃至冷水中急冷次数50次。
对比例1、
一种晶须增强的耐火材料，其特征在于，原料以质量百分比计，Al2O3为77%，石墨为9%，氮化硅晶须为5%，SiO2为6%，Al粉为3%；将Al2O3、石墨、氮化硅晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量5%的水，在40MPa下压制成型，120℃干燥6h，在氮气气氛中1150℃烧结0.8h，得到晶须增强的耐火材料；其中，Al2O3的粒径为5um，石墨的粒径为12um，SiO2、Al粉的粒径为20um；氮化硅晶须的长度为15mm，直径为0.1mm；长径比为150。
所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5%；
对制备得到的氮化硅晶须增强耐火材料进行测试，相对密度87%，常温下的抗折强度为35MPa，常温下的耐压强度为120MPa；1400℃下高温抗折强度为24MPa。断裂韧性为5.4MPa·m1/2。抗热震性：1100℃至冷水中急冷次数为23次。
对比例2、
一种晶须增强的耐火材料，其特征在于，原料以质量百分比计，Al2O3为72%，石墨为9%，碳化硅晶须为5%，SiO2为6%，Al粉为8%；将Al2O3、石墨、碳化硅晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量5%的水，在40MPa下压制成型，120℃干燥6h，在氮气气氛中1150℃烧结0.8h，得到晶须增强的耐火材料；其中，Al2O3的粒径为5um，石墨的粒径为12um，SiO2、Al粉的粒径为20um；碳化硅晶须的长度为12mm，直径为0.3mm；长径比为40。
所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5%；
对制备得到的碳化硅晶须增强耐火材料进行测试，相对密度81%，常温下的抗折强度为32MPa，常温下的耐压强度为118MPa；1400℃下高温抗折强度为21MPa。断裂韧性为4.7MPa·m1/2。抗热震性：1100℃至冷水中急冷次数为18次。
对比例3、
一种晶须增强的耐火材料，其特征在于，原料以质量百分比计，Al2O3为74.9%，石墨为9%，硼化钛晶须为10%，SiO2为6%，Al粉为0.1%；将Al2O3、石墨、硼化钛晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量5%的水，在40MPa下压制成型，120℃干燥6h，在氮气气氛中1500℃烧结0.3h，得到晶须增强的耐火材料；其中，Al2O3的粒径为5um，石墨的粒径为12um，SiO2、Al粉的粒径为20um；硼化钛晶须的长度为8mm，直径为0.8mm；长径比为10。
所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5%；
对制备得到的硼化钛晶须增强耐火材料进行测试，相对密度78%，常温下的抗折强度为34MPa，常温下的耐压强度为123MPa；1400℃下高温抗折强度为25MPa。断裂韧性为5.1MPa·m1/2。抗热震性：1100℃至冷水中急冷次数为22次。
采用本发明的具体实施方式制备得到的晶须增强的耐火材料，常温下具有良好的抗折强度、耐压强度，1400℃下高温抗折强度，断裂韧性，抗热震性都有大幅度提高，制备耐火材料的实施方式具有低成本和工艺简单的特点。所制备的耐火材料抗折耐压强度较大、热震稳定性优良。
上述实施例阐明的内容应当理解为这些实施例仅用于更清楚地说明本发明，而不用于限制本发明的范围，在不脱离本发明的范围的情况下，所做出的改进和修改都应该在本发明的保护范围之内。
Claims (8)
1.一种晶须增强的耐火材料，其特征在于，原料以质量百分比计，Al2O3为75-85%，石墨为6-9%，硼化钛晶须为2-5%，SiO2为3-6%，Al粉为1-3%；将Al2O3、石墨、硼化钛晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量5-8%的水，在40-50MPa下压制成型，100-120℃干燥6-10h，在氮气气氛中1150-1300℃烧结0.5-0.8h，得到晶须增强的耐火材料；其中，Al2O3的粒径为5-10um，石墨的粒径为8-12um，SiO2、Al粉的粒径为15-20um；硼化钛晶须的长度为10-14mm，直径为0.2-0.3mm；长径比为40-60；所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5%。
2.根据权利要求1所述的晶须增强的耐火材料，其特征在于，所述硼化钛晶须含量为3.2%。
3.根据权利要求1或2所述的晶须增强的耐火材料，其特征在于，所述硼化钛晶须的长度为12mm，直径为0.25mm；长径比为48。
4.根据权利要求1或2所述的晶须增强的耐火材料，其特征在于，所述Al粉含量为2%，在氮气气氛中1200℃烧结0.6h。
5.一种根据权利要求1至4任一项所述的晶须增强的耐火材料的制备方法，其特征在于，原料以质量百分比计，Al2O3为75-85%，石墨为6-9%，硼化钛晶须为2-5%，SiO2为3-6%，Al粉为1-3%；将Al2O3、石墨、硼化钛晶须、SiO2、Al粉混合得到混合物，向混合物中加入混合物重量5-8%的水，在40-50MPa下压制成型，100-120℃干燥6-10h，在氮气气氛中1150-1300℃烧结0.5-0.8h，得到晶须增强的耐火材料；其中，Al2O3的粒径为5-10um，石墨的粒径为8-12um，SiO2、Al粉的粒径为15-20um；硼化钛晶须的长度为10-14mm，直径为0.2-0.3mm；长径比为40-60；所述Al2O3的纯度≥99%；所述氮气纯度为≥99.5% 。
6.根据权利要求5所述的晶须增强的耐火材料的制备方法，其特征在于，所述硼化钛晶须含量为3.2%。
7.根据权利要求5所述的晶须增强的耐火材料的制备方法，其特征在于，所述硼化钛晶须的长度为12mm，直径为0.25mm；长径比为48。
8.根据权利要求5所述的晶须增强的耐火材料的制备方法，其特征在于，所述Al粉含量为2%，在氮气气氛中1200℃烧结0.6h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310820534.8A CN116789458B (zh) | 2023-07-06 | 2023-07-06 | 一种晶须增强的耐火材料及其制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310820534.8A CN116789458B (zh) | 2023-07-06 | 2023-07-06 | 一种晶须增强的耐火材料及其制备方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116789458A true CN116789458A (zh) | 2023-09-22 |
| CN116789458B CN116789458B (zh) | 2024-08-09 |
Family
ID=88036264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310820534.8A Active CN116789458B (zh) | 2023-07-06 | 2023-07-06 | 一种晶须增强的耐火材料及其制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116789458B (zh) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4804645A (en) * | 1987-03-27 | 1989-02-14 | Sandvik Aktiebolag | Ceramic material based on alumina and refractory hard constituents |
| CN1053603A (zh) * | 1989-12-13 | 1991-08-07 | 唐化学原料公司 | 碳化硅晶须增强陶瓷复合材料及其制造方法 |
| CN101429037A (zh) * | 2007-11-07 | 2009-05-13 | 鞍钢集团耐火材料公司 | 一种铝碳滑板砖及其制造方法 |
| WO2009072652A1 (ja) * | 2007-12-07 | 2009-06-11 | Krosakiharima Corporation | 高炉炉床用アルミニウム化合物結合れんが |
| CN101659548A (zh) * | 2009-09-02 | 2010-03-03 | 中钢集团洛阳耐火材料研究院有限公司 | 一种含铝氮化物原位复合铝碳耐火材料的制备方法 |
| CN104446456A (zh) * | 2014-11-11 | 2015-03-25 | 合肥皖为电气设备工程有限责任公司 | 一种高抗弯强度切削刀具用陶瓷及其制备方法 |
-
2023
- 2023-07-06 CN CN202310820534.8A patent/CN116789458B/zh active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4804645A (en) * | 1987-03-27 | 1989-02-14 | Sandvik Aktiebolag | Ceramic material based on alumina and refractory hard constituents |
| CN1053603A (zh) * | 1989-12-13 | 1991-08-07 | 唐化学原料公司 | 碳化硅晶须增强陶瓷复合材料及其制造方法 |
| CN101429037A (zh) * | 2007-11-07 | 2009-05-13 | 鞍钢集团耐火材料公司 | 一种铝碳滑板砖及其制造方法 |
| WO2009072652A1 (ja) * | 2007-12-07 | 2009-06-11 | Krosakiharima Corporation | 高炉炉床用アルミニウム化合物結合れんが |
| CN101659548A (zh) * | 2009-09-02 | 2010-03-03 | 中钢集团洛阳耐火材料研究院有限公司 | 一种含铝氮化物原位复合铝碳耐火材料的制备方法 |
| CN104446456A (zh) * | 2014-11-11 | 2015-03-25 | 合肥皖为电气设备工程有限责任公司 | 一种高抗弯强度切削刀具用陶瓷及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116789458B (zh) | 2024-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110330350B (zh) | 一种纤维增韧氧化铝陶瓷的制备方法 | |
| CN107473756B (zh) | 一种多用途含低维碳的陶瓷/炭复合材料及其生产方法 | |
| CN110923498B (zh) | 一种含金属碳化物和金属氧化物复合陶瓷摩擦组元的铜基粉末冶金摩擦材料及其制备方法 | |
| CN115141008B (zh) | 一种长寿命摆动沟浇注料及其制备方法 | |
| CN107324818A (zh) | 一种碳化硅耐火材料及其制备方法 | |
| CN112358305A (zh) | 一种防纵裂的电炉钢包包壁镁碳砖及其制备工艺 | |
| CN114057472A (zh) | 一种低碳镁尖晶石滑板砖及制备方法 | |
| WO2023029080A1 (zh) | 氮化硼纳米管/纳米片-碳化硼陶瓷复合材料及其制备方法 | |
| CN116789458B (zh) | 一种晶须增强的耐火材料及其制备方法 | |
| CN112500177B (zh) | 硝酸盐催化氮化反应赛隆纤维结合碳化硅-刚玉复合耐高温材料的制备方法 | |
| CN113248270A (zh) | 一种碳纤维复合ZrO2-C材料及其制备方法 | |
| CN117164348A (zh) | 一种碳硅化铝晶须增强的氧化铝-碳化硅-碳免烧耐火材料及其制备方法和应用 | |
| CN115057692B (zh) | 一种添加钛铁合金的铝碳滑板砖及其生产方法 | |
| CN117049883A (zh) | 一种高炉主铁沟用抗氧化浇注料 | |
| CN113979761A (zh) | 一种三元复合自修复免烧滑板砖及其制备方法 | |
| CN115321996B (zh) | 一种含亚微米复合防氧化剂的铁沟浇注料及其制备方法 | |
| CN110845244A (zh) | 一种高钙钢用滑板砖及其生产工艺 | |
| TWI785803B (zh) | 等方向性石墨塊材組成物及等方向性石墨塊材之製造方法 | |
| CN117865658B (zh) | 一种铝磷酸盐结合的高炉出铁沟浇注料 | |
| CN115010504B (zh) | 一种两步法制备高强矾土基莫来石均质料的方法 | |
| CN116789453B (zh) | 一种石墨坩埚及其制备方法和应用 | |
| CN115231907B (zh) | 一种钒钛合金-刚玉复合滑板及其制备方法 | |
| CN117326852A (zh) | 原位多相陶瓷网络结合低碳镁碳耐火材料及其制备方法 | |
| CN113416065A (zh) | 一种新型高铝碳化硅碳质浇注料 | |
| CN117342859A (zh) | Si3N4/SiC复合粉体、低碳镁碳耐火材料及其制备方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240716 Address after: 526000 Jin Du Zhen LAN Tang Cun, Gaoyao District, Zhaoqing City, Guangdong Province Applicant after: ZHAOQING GAOYAO JINXIANG FINE CERAMICS Co.,Ltd. Country or region after: China Address before: 710000 Xi'an Jiaotong University, West District, No. 76, Yanta West Road, Yanta District, Xi'an, Shaanxi Applicant before: Yang Guocheng Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |