CN108117395A - 一种六方氮化硼-玻璃复合材料及其制备方法 - Google Patents
一种六方氮化硼-玻璃复合材料及其制备方法 Download PDFInfo
- Publication number
- CN108117395A CN108117395A CN201611068970.0A CN201611068970A CN108117395A CN 108117395 A CN108117395 A CN 108117395A CN 201611068970 A CN201611068970 A CN 201611068970A CN 108117395 A CN108117395 A CN 108117395A
- Authority
- CN
- China
- Prior art keywords
- boron nitride
- hexagonal boron
- powder
- glass
- composite material
- 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
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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/583—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on boron nitride
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
- C04B35/645—Pressure sintering
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
-
- 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
- C04B2235/34—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
- C04B2235/3427—Silicates other than clay, e.g. water glass
-
- 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
- C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
-
- 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
- C04B2235/6562—Heating rate
-
- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
本发明涉及陶瓷基复合材料领域,具体为一种六方氮化硼‑玻璃复合材料及其制备方法。采用六方氮化硼粉、三氧化二镱粉和二氧化硅粉为主要原料,氧化镁、三氧化二铝和二氧化钛中的一种或两上以上氧化物为烧结助剂。原料粉经物理机械方法混合6~24小时,烘干、过筛后装入石墨模具中冷压成型,以10~20MPa的压强冷压1~10分钟,在通有保护气氛的热压炉内烧结,升温速率为5~15℃/分钟,烧结温度为1700~2000℃、烧结时间为1~3小时、烧结压强为20~40MPa。采用本发明方法能够在短时间内制备得到致密度高、可加工性好、室温及高温强度优异的六方氮化硼‑玻璃复合材料,玻璃包含两相:二氧化硅玻璃和富镱硅酸盐玻璃。
Description
技术领域
本发明涉及陶瓷基复合材料领域,具体为一种六方氮化硼-玻璃复合材料及其制备方法。
背景技术
在氮化硼的诸多晶型中,以六方氮化硼(h-BN)最为稳定,它具有较高的热导率、较低的热膨胀系数、良好的抗热震性能、低的介电常数和介电损耗、可靠的电绝缘性、优异的可加工性、对大多数金属不浸润、无毒等性能,在诸多领域得到了广泛应用。
但由于特殊的层状结构,导致六方氮化硼陶瓷烧结较为困难,致使强度和硬度偏低,限制其作为结构材料更广泛的应用,而制备复合材料是改善其性能的一条有效途径。文献1:Journal of the American Ceramic Society.1999,82(9):2563–2565中,RodneyW.Trice等人通过在h-BN中引入氧化物烧结助剂形成Y2Si2O7第二相明显提高了h-BN陶瓷的弯曲强度;文献2:Journal of the European Ceramic Society 2000,20:1923-1928中,Wen等人通过热压烧结途径成功制备了h-BN/熔融石英复合材料,充分发挥了h-BN和石英各自的性能优势最终得到综合性能良好的复合材料制品。文献3:Materials Science&Engineering A.2015,633:194–199中,Cai等人制备的h-BN/MAS复合材料具有较高的弯曲强度和断裂韧性。
镱硅酸盐以玻璃态的形式与六方氮化硼(h-BN)陶瓷复合,目前尚没有相关报道。
发明内容
本发明的目的在于提供一种制备六方氮化硼-玻璃复合材料的方法,通过添加氧化物烧结助剂在六方氮化硼陶瓷基体中形成SiO2玻璃相和富Yb硅酸盐玻璃相,制备得到一种致密度高,室温及高温性能良好的六方氮化硼陶瓷基复合材料,解决纯h-BN陶瓷烧结困难,力学性能低等问题。
本发明的技术方案是:
一种六方氮化硼-玻璃复合材料,由六方氮化硼相、二氧化硅玻璃相和富镱硅酸盐玻璃相组成,六方氮化硼相的体积百分数为50~95%,SiO2玻璃相和富镱硅酸盐玻璃相的总体积为5~50%,两玻璃相的体积百分数分别为2.5~47.5%和2.5~47.5%。
所述的六方氮化硼-玻璃复合材料,富镱硅酸盐玻璃相中含Mg、Al、Ti元素中的一种或两种以上;SiO2玻璃相中含有Mg、Al、Ti元素中的一种或两种以上。
所述的六方氮化硼-玻璃复合材料的制备方法,原料粉通过添加氧化物烧结助剂在六方氮化硼陶瓷基体中形成SiO2玻璃相和富镱硅酸盐玻璃相。
所述的六方氮化硼-玻璃复合材料的制备方法,原料粉为六方氮化硼粉、三氧化二镱粉和二氧化硅粉,氧化物烧结助剂为氧化镁、三氧化二铝和二氧化钛;所述的BN粉为六方晶型,粒度范围为0.5~10微米;Yb2O3和SiO2粉粒度范围为200~400目;MgO、Al2O3和TiO2粉的粒度分别为120~200目。
所述的六方氮化硼-玻璃复合材料的制备方法,原料粉经物理机械方法混合6~24小时,烘干、过筛后装入石墨模具中冷压成型,以10~20MPa的压强冷压1~10分钟,在通有保护气氛的热压炉内烧结,升温速率为5~15℃/分钟,烧结温度为1700~2000℃、烧结时间为1~3小时、烧结压强为20~40MPa。
所述的六方氮化硼-玻璃复合材料的制备方法,物理机械方法混合采用在氮化硅球磨罐中用无水乙醇作介质湿混球磨。
所述的六方氮化硼-玻璃复合材料的制备方法,保护气氛为氩气或氮气。
所述的六方氮化硼-玻璃复合材料的制备方法,烧结方式为热压烧结。
本发明的优点及有益效果是:
1.本发明使用的原料成分简单,主要为六方氮化硼(h-BN)粉、三氧化二镱(Yb2O3)粉和二氧化硅(SiO2)粉;氧化物烧结助剂为氧化镁(MgO)、三氧化二铝(Al2O3)和二氧化钛(TiO2)。
2.工艺简单,成本低。本发明通过简单的一步热压方法,能够实现原位合成制备六方氮化硼-玻璃复合材料。在升温过程中,达到某一温度后,三氧化二镱粉与二氧化硅粉发生化学反应生成镱硅酸盐。在氧化物烧结助剂的作用下,反应生成的镱硅酸盐和过量的二氧化硅在较低的温度下就能转变为液相,随着温度的升高液相量逐渐增加直至全部转变为液相,在随炉冷却的过程中由于冷却速度较快液相来不及结晶而被保留下来,最终以玻璃态的形式存在于复合材料中。另外,该复合材料具有较低的硬度,保持了良好的可加工性,可用普通刀具进行高精度加工。
3.优异的力学性能。本发明通过将玻璃态的物质引入到六方氮化硼陶瓷中,不仅得到了室温强度优异的复合材料,同时高温强度也得到了大幅度的提高。
附图说明
图1为六方氮化硼-玻璃复合材料的X射线衍射图谱。
图2为六方氮化硼-玻璃复合材料的扫描电镜照片。
具体实施方式
在具体实施过程中,本发明六方氮化硼-玻璃复合材料中的相组成为h-BN基体相、SiO2玻璃相及富Yb硅酸盐玻璃相,其中h-BN基体相的体积百分数为50~95%(优选为70%),SiO2玻璃相和富Yb硅酸盐玻璃相的总体积为5~50%(优选为30%),两玻璃相的体积百分数分别为2.5~47.5%(优选为25%)和2.5~47.5%(优选为5%)。在富Yb硅酸盐玻璃相中,Yb占55~80wt%,硅酸盐占20~45wt%。
另外,富镱硅酸盐玻璃相中含Mg、Al、Ti元素中的一种或两种以上,Mg、Al、Ti元素的含量均为0.2~2wt%;SiO2玻璃相中含有Mg、Al、Ti元素中的一种或两种以上,Mg、Al、Ti元素的含量均为0.1~1wt%。
本发明六方氮化硼-玻璃复合材料的技术指标如下:复合材料的密度为2.23~3.68/cm3,杨氏模量为76~105GPa,剪切模量为35~45GPa,维氏硬度为1.6~3.1GPa,压缩强度为425~625MPa,室温弯曲强度为191~285MPa,800℃高温弯曲强度最优为496MPa。
下面通过实施例详述本发明。
实施例1
将10微米六方氮化硼(h-BN)粉11.94克、300目的三氧化二镱(Yb2O3)粉19.74克、300目的二氧化硅(SiO2)粉8.32克、120目的氧化镁(MgO)粉0.12克、120目的三氧化二铝(Al2O3)粉0.12克和120目的二氧化钛(TiO2)粉0.12克装入氮化硅球磨罐中球磨24小时,60℃烘干12小时,经过80目筛过筛,随后装入石墨模具中冷压成型,施加的压强为10MPa,保压10分钟后再放入热压炉中热压烧结,升温速率为15℃/分钟,升温至600℃开始加压,以2kN/min的速率加压至20MPa,加热到1700℃保温1小时,整个烧结过程在氩气保护下进行。所获得的复合材料经X射线衍射分析包括BN结晶相和玻璃相,其中BN结晶相的体积百分数为50%,SiO2玻璃相体积百分数为10%,富Yb硅酸盐玻璃相体积百分数为40%。测得复合材料的密度为3.68g/cm3,杨氏模量为105GPa,剪切模量为45GPa,维氏硬度为3.1GPa,压缩强度为625MPa,室温弯曲强度为273MPa。
实施例2
将5微米六方氮化硼(h-BN)粉18.70克,400目的三氧化二镱(Yb2O3)粉2.87克、400目的二氧化硅(SiO2)粉8.43克、120目的氧化镁(MgO)粉0.09克、120目的三氧化二铝(Al2O3)粉0.09克和120目的二氧化钛(TiO2)粉0.09克装入氮化硅罐中球磨6小时,60℃烘干12小时,经过80目筛过筛,随后装入石墨模具中冷压成型,施加的压强为15MPa,保压5分钟后再放入热压炉中热压烧结,升温速率为10℃/分钟,升温至600℃开始加压,以2kN/min的速率加压至30MPa,加热到1860℃保温1.5小时。整个烧结过程在氩气保护下进行,获得的复合材料经X射线衍射和能谱综合分析为h-BN结晶相、SiO2玻璃相和富Yb的硅酸盐玻璃相,其中h-BN结晶相的体积百分数为70%,SiO2玻璃相体积百分数为25%,富Yb硅酸盐玻璃相体积百分数为5%,如图1所示。制备所得到的复合材料中浅灰色的SiO2玻璃相和白色的富Yb硅酸盐玻璃相弥散均匀的分布在深色的h-BN基体中,如图2所示。在本实施例中该复合材料的密度为2.40g/cm3,杨氏模量为81GPa,剪切模量为37GPa,维氏硬度为2.4GPa,压缩强度为561MPa。特别地,该复合材料的室温弯曲强度为285MPa,而在800℃的高温弯曲强度达到了496MPa,提高幅度为74%。
实施例3
将0.5微米六方氮化硼(h-BN)粉22.80克,200目的三氧化二镱(Yb2O3)粉1.24克、200目的二氧化硅(SiO2)粉0.96克、200目的氧化镁(MgO)粉0.10克、200目的三氧化二铝(Al2O3)粉0.10克和200目的二氧化钛(TiO2)粉0.10克装入氮化硅罐中球磨12小时,60℃烘干12小时,经过80目筛过筛,随后装入石墨模具中冷压成型,施加的压强为20MPa,保压1分钟后再放入热压炉中热压烧结,升温速率为5℃/分钟,升温至600℃开始加压,以0.5kN/min的速率加压至40MPa,加热到2000℃保温3小时,整个烧结过程在氩气保护下进行。获得的复合材料经X射线衍射和能谱综合分析由h-BN结晶相、SiO2玻璃相和富Yb的硅酸盐玻璃相组成,其中h-BN结晶相的体积百分数为95%,SiO2玻璃相体积百分数为2.5%,富Yb硅酸盐玻璃相体积百分数为2.5%。测得复合材料的密度为2.23g/cm3,杨氏模量为76GPa,剪切模量为35GPa,维氏硬度为1.6GPa,压缩强度为495MPa,室温弯曲强度为191MPa。
比较例1
文献1:Journal of the American Ceramic Society.1999,82(9):2563–2565中Rodney W.Trice等人的研究结果表明,引入22wt.%的氧化物烧结助剂得到的h-BN/Y2Si2O7复合材料的室温弯曲强度最高达到117MPa。而实施例3所获得的复合材料的室温弯曲强度为191MPa,较文献1中的强度有明显提高。
比较例2
文献4:Ceramics International.2015,9(41):10891-10896中Zhang等人获得的h-BN/30vol%Y2SiO5复合材料室温和800℃时的弯曲强度分别为119MPa和150MPa,而实施例2中得到的h-BN/玻璃复合材料的室温和800℃高温弯曲强度分别达到285MPa和496MPa。这一结果表明:h-BN/玻璃复合材料具有更加优异的高温力学性能。
由实施例1、2、3及比较例1和2,氧化物烧结助剂的引入有利于玻璃相的形成,而玻璃与基体的复合明显提高了六方氮化硼基复合材料的力学性能。采用本发明方法能够在短时间内制备得到致密度高、可加工性好、室温及高温强度优异的六方氮化硼-玻璃复合材料。
Claims (8)
1.一种六方氮化硼-玻璃复合材料,其特征在于:由六方氮化硼相、二氧化硅玻璃相和富镱硅酸盐玻璃相组成,六方氮化硼相的体积百分数为50~95%,SiO2玻璃相和富镱硅酸盐玻璃相的总体积为5~50%,两玻璃相的体积百分数分别为2.5~47.5%和2.5~47.5%。
2.按照权利要求1所述的六方氮化硼-玻璃复合材料,其特征在于:富镱硅酸盐玻璃相中含Mg、Al、Ti元素中的一种或两种以上;SiO2玻璃相中含有Mg、Al、Ti元素中的一种或两种以上。
3.一种权利要求1至2之一所述的六方氮化硼-玻璃复合材料的制备方法,其特征在于:原料粉通过添加氧化物烧结助剂在六方氮化硼陶瓷基体中形成SiO2玻璃相和富镱硅酸盐玻璃相。
4.按照权利要求3所述的六方氮化硼-玻璃复合材料的制备方法,其特征在于:原料粉为六方氮化硼粉、三氧化二镱粉和二氧化硅粉,氧化物烧结助剂为氧化镁、三氧化二铝和二氧化钛;所述的BN粉为六方晶型,粒度范围为0.5~10微米;Yb2O3和SiO2粉粒度范围为200~400目;MgO、Al2O3和TiO2粉的粒度分别为120~200目。
5.按照权利要求3或4所述的六方氮化硼-玻璃复合材料的制备方法,其特征在于:原料粉经物理机械方法混合6~24小时,烘干、过筛后装入石墨模具中冷压成型,以10~20MPa的压强冷压1~10分钟,在通有保护气氛的热压炉内烧结,升温速率为5~15℃/分钟,烧结温度为1700~2000℃、烧结时间为1~3小时、烧结压强为20~40MPa。
6.按照权利要求5所述的六方氮化硼-玻璃复合材料的制备方法,其特征在于:物理机械方法混合采用在氮化硅球磨罐中用无水乙醇作介质湿混球磨。
7.按照权利要求5所述的六方氮化硼-玻璃复合材料的制备方法,其特征在于:保护气氛为氩气或氮气。
8.按照权利要求5所述的六方氮化硼-玻璃复合材料的制备方法,其特征在于:烧结方式为热压烧结。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611068970.0A CN108117395B (zh) | 2016-11-29 | 2016-11-29 | 一种六方氮化硼-玻璃复合材料及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611068970.0A CN108117395B (zh) | 2016-11-29 | 2016-11-29 | 一种六方氮化硼-玻璃复合材料及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108117395A true CN108117395A (zh) | 2018-06-05 |
CN108117395B CN108117395B (zh) | 2020-09-18 |
Family
ID=62225448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201611068970.0A Active CN108117395B (zh) | 2016-11-29 | 2016-11-29 | 一种六方氮化硼-玻璃复合材料及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108117395B (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111410539A (zh) * | 2020-03-03 | 2020-07-14 | 哈尔滨工业大学 | 一种Y-Al-Si-O多元玻璃相增强六方氮化硼基复相陶瓷及其制备方法 |
CN112552031A (zh) * | 2020-12-10 | 2021-03-26 | 山东鹏程陶瓷新材料科技有限公司 | 一种SiO2-BN复相陶瓷及其制备方法 |
CN114315132A (zh) * | 2022-01-11 | 2022-04-12 | 中国科学院金属研究所 | 一种稀土铝硅酸盐玻璃块体材料的制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3932349B2 (ja) * | 2001-07-02 | 2007-06-20 | 独立行政法人産業技術総合研究所 | 非酸化物系窒化ホウ素複合材料の反応合成 |
CN104529412A (zh) * | 2014-12-27 | 2015-04-22 | 西安交通大学 | 一种纳米级六方氮化硼/二氧化硅复相陶瓷材料的制备方法 |
CN104817326A (zh) * | 2015-04-13 | 2015-08-05 | 中国科学院金属研究所 | 一种六方氮化硼-镱硅氧-二氧化硅复合材料及制备方法 |
-
2016
- 2016-11-29 CN CN201611068970.0A patent/CN108117395B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3932349B2 (ja) * | 2001-07-02 | 2007-06-20 | 独立行政法人産業技術総合研究所 | 非酸化物系窒化ホウ素複合材料の反応合成 |
CN104529412A (zh) * | 2014-12-27 | 2015-04-22 | 西安交通大学 | 一种纳米级六方氮化硼/二氧化硅复相陶瓷材料的制备方法 |
CN104817326A (zh) * | 2015-04-13 | 2015-08-05 | 中国科学院金属研究所 | 一种六方氮化硼-镱硅氧-二氧化硅复合材料及制备方法 |
Non-Patent Citations (1)
Title |
---|
雷玉成等: "液相烧结六方氮化硼陶瓷", 《江苏大学学报(自然科学版)》 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111410539A (zh) * | 2020-03-03 | 2020-07-14 | 哈尔滨工业大学 | 一种Y-Al-Si-O多元玻璃相增强六方氮化硼基复相陶瓷及其制备方法 |
CN111410539B (zh) * | 2020-03-03 | 2023-02-21 | 哈尔滨工业大学 | 一种Y-Al-Si-O多元玻璃相增强六方氮化硼基复相陶瓷 |
CN112552031A (zh) * | 2020-12-10 | 2021-03-26 | 山东鹏程陶瓷新材料科技有限公司 | 一种SiO2-BN复相陶瓷及其制备方法 |
CN114315132A (zh) * | 2022-01-11 | 2022-04-12 | 中国科学院金属研究所 | 一种稀土铝硅酸盐玻璃块体材料的制备方法 |
CN114315132B (zh) * | 2022-01-11 | 2023-11-10 | 中国科学院金属研究所 | 一种稀土铝硅酸盐玻璃块体材料的制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN108117395B (zh) | 2020-09-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5924751B2 (ja) | 焼結成形体 | |
CN102219536B (zh) | 一种B4C/SiC晶须/SiC复相陶瓷基复合材料及其制备方法 | |
Li et al. | Study on in-situ reaction synthesis and mechanical properties of Si2N2O ceramic | |
CN108117395A (zh) | 一种六方氮化硼-玻璃复合材料及其制备方法 | |
Lao et al. | Effects of various sintering additives on the properties of β-SiAlON–SiC ceramics obtained by liquid phase sintering | |
CN109180161A (zh) | 一种高纯钛硅化碳/氧化铝复合材料及其制备方法 | |
Luo et al. | Sintering behavior, microstructures and mechanical properties of porous CaO-Al2O3-SiO2-Si3N4 glass-ceramics | |
CN104817326B (zh) | 一种六方氮化硼‑镱硅氧‑二氧化硅复合材料及制备方法 | |
CN101824576B (zh) | 一种锆铝硅碳-碳化硅复合材料及其制备方法 | |
Zhang et al. | Effects of different types of sintering additives and post-heat treatment (PHT) on the mechanical properties of SHS-fabricated Si3N4 ceramics | |
CN103936424B (zh) | 一种六方氮化硼-钇硅氧复合材料及其制备方法 | |
CN101070241A (zh) | 一种氧化铝/硅碳化钛/氧化铝层状复合材料及制备方法 | |
CN111848179B (zh) | 一种可在超高温环境中使用的高强度氮化硼陶瓷的制备方法 | |
LEE et al. | Influence of modification of Na2O in a glass matrix on the strength of leucite-containing porcelains | |
CN111592354B (zh) | 一种高性能环保复合建筑陶瓷材料及其制备方法 | |
CN102030535B (zh) | 氮化锆增强氧氮化铝复合陶瓷材料的制备方法 | |
CN108002841A (zh) | 六方氮化硼-镱硅氧氮陶瓷基复合材料及其原位制备方法 | |
Wang et al. | Sintering properties of sol–gel derived lithium disilicate glass ceramics | |
CN107399972A (zh) | 一种基于sps方法制备透明氮化铝陶瓷的方法 | |
Luo et al. | Synthesis and properties of AlN/MAS/Si3N4 ternary glass-ceramic composites with in-situ grown rod-like β-Si3N4 crystals | |
CN106083002B (zh) | 低温烧结原位合成六铝酸镧增强的氧化铝陶瓷及其制备 | |
CN115073186A (zh) | 一种氮化硅陶瓷烧结体及其制备方法 | |
CN107540375A (zh) | 一种低温高强微晶玻璃及其金刚石复合材料 | |
CN110330349A (zh) | 一种氮化硅纳米纤维增强氮化硼陶瓷及其制备方法 | |
Wang et al. | Hot-press sintering studies of sol-gel-prepared composite powders: A novel preparation method to improve mechanical properties of BN-BAS composite ceramics |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant |