CN106348750A - 改善陶瓷刀具韧性的方法 - Google Patents
改善陶瓷刀具韧性的方法 Download PDFInfo
- Publication number
- CN106348750A CN106348750A CN201610756741.1A CN201610756741A CN106348750A CN 106348750 A CN106348750 A CN 106348750A CN 201610756741 A CN201610756741 A CN 201610756741A CN 106348750 A CN106348750 A CN 106348750A
- Authority
- CN
- China
- Prior art keywords
- temperature
- heat treatment
- toughness
- sintex
- parts
- 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.)
- Pending
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
- C04B35/01—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
- C04B35/48—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 zirconium or hafnium oxides, zirconates, zircon or hafnates
-
- 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
-
- 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
-
- 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
- C04B2235/3224—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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide 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
- C04B2235/65—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
- C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
- C04B2235/661—Multi-step 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
- C04B2235/70—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
Abstract
本发明公开了一种改善陶瓷刀具韧性的方法,包括:步骤(1)将粉体原料进行预压成型;步骤(2)将预压成型得到的产品进行低温热处理,将温度从600℃~650℃升温至低温热处理的设定温度,升温速率为15~25℃/h,低温热处理的设定温度为1000~1100℃,在低温热处理的设定温度下施加恒定压力50MPa;步骤(3)将低温热处理得到的产品进行热压振动烧结,热压振动烧结的温度从1100℃上升至1700℃,待温度升高至1700℃时,压力从80MPa上升至100MPa,并且压力在100MPa时再持续烧结20min。本发明所述的改善陶瓷刀具韧性的方法所制得的陶瓷刀具的强度更高,不易断裂。
Description
技术领域
本发明涉及一种改善陶瓷刀具韧性的方法。
背景技术
与别的刀具材料相比,陶瓷刀具最显著的缺点就是断裂韧性不足,抗弯曲强度和抗热冲击性能较差,当切削温度发生变化时,容易产生裂纹。作为评价其抗破损能力的重要指标之一,陶瓷需要通过适当的手段提高其硬度、抗弯强度及断裂韧性,而在进行民用的陶瓷刀具用品时,陶瓷刀具和餐具的其它形式很容易崩裂,缺角,陶瓷刀具材料的断裂韧性更为重要。
发明内容
本发明设计开发了一种改善陶瓷刀具韧性的方法,制得的陶瓷刀具的强度更高,不易断裂。
本发明提供的技术方案为:
一种改善陶瓷刀具韧性的方法,包括:
步骤(1)将粉体原料进行预压成型,粉体原料由按质量份数计的以下组分组成:氧化锆92~95份,氧化钇5~6份,稀土氧化物4~6份;
步骤(2)将预压成型得到的产品进行低温热处理,将温度从600℃~650℃升温至低温热处理的设定温度,升温速率为15~25℃/h,低温热处理的设定温度为1000~1100℃,在低温热处理的设定温度下施加恒定压力50MPa,施加时间为10min;
步骤(3)将低温热处理得到的产品进行热压振动烧结,热压振动烧结的温度从1100℃上升至1700℃,升温速率为30~50℃/h,待温度升高至1700℃时,压力从80MPa上升至100MPa,且升压速率为2MPa/min,并且压力在100MPa时再持续烧结20min;在热压振动烧结过程中,再持续施加可变力,该可变力的变化幅度为20MPa,频率为10~15次/s。
优选的是,所述的改善陶瓷刀具韧性的方法中,所述步骤(1)中,粉体原料由按质量份数计的以下组分组成:氧化锆95份,氧化钇6份,稀土氧化物6份。
优选的是,所述的改善陶瓷刀具韧性的方法中,所述低温热处理的温度为1100℃。
优选的是,所述的改善陶瓷刀具韧性的方法中,所述步骤(3)中,升温速率为35℃/h。
优选的是,所述的改善陶瓷刀具韧性的方法,还包括:步骤(4)将热压振动烧结得到的产品进行打磨。
本发明所述的改善陶瓷刀具韧性的方法所制得的陶瓷刀具的强度更高,不易断裂。
具体实施方式
下面对本发明做进一步的详细说明,以令本领域技术人员参照说明书文字能够据以实施。
本发明提供一种改善陶瓷刀具韧性的方法,包括:
步骤(1)将粉体原料进行预压成型,粉体原料由按质量份数计的以下组分组成:氧化锆92~95份,氧化钇5~6份,稀土氧化物4~6份。
步骤(2)将预压成型得到的产品进行低温热处理,将温度从600℃~650℃升温至低温热处理的设定温度,升温速率为15~25℃/h,低温热处理的设定温度为1000~1100℃,在低温热处理的设定温度下施加恒定压力50MPa,施加时间为10min。
步骤(3)将低温热处理得到的产品进行热压振动烧结,热压振动烧结的温度从1100℃上升至1700℃,升温速率为30~50℃/h,待温度升高至1700℃时,压力从80MPa上升至100MPa,且升压速率为2MPa/min,并且压力在100MPa时再持续烧结20min;在热压振动烧结过程中,再持续施加可变力,该可变力的变化幅度为20MPa,频率为10~15次/s。
本发明在低温热处理阶段,采用了逐渐升温的方式,并且在温度达到设定值,还短时间施加压力,这都有助于物料内部的开放式气孔的消失,从而使最终获得的陶瓷刀具的内部结构更致密。
本发明中,在热压振动烧结过程中采用阶梯式升温方式,且温度的起始点与低温热处理的温度接近,甚至一致。这有助于促使物料在微观层面逐渐达到平衡,从而使最终制得的陶瓷刀具的内部结构中各组分的界面之间分布更均匀;另外,在热压的后半阶段,逐渐升温的过程更有利于物料内的气孔的收缩。
另外,本发明在热压烧结过程中,在温度升高至最高时,将压力逐渐从80MPa升高到100MPa,且控制升压速率在一定值。在最高温度下,将压力逐渐增加,可以促使不同组分之间的界面结合更紧密。在达到100MPa时,再持续烧结20min,有助于组分之间结合紧密。
热压振动烧结过程中所另外施加的可变力,其变化幅度和变化频率经过设计,可以使热压后半阶段存在于物料内部的封闭气孔被排除。
本发明所制得的陶瓷刀具的强度高,韧性强,其硬度可以达到14.8GPa,断裂韧性可以达到15以上,抗弯强度可以达到2094MPa。
优选的是,所述的改善陶瓷刀具韧性的方法中,所述步骤(1)中,粉体原料由按质量份数计的以下组分组成:氧化锆95份,氧化钇6份,稀土氧化物6份。
优选的是,所述的改善陶瓷刀具韧性的方法中,所述低温热处理的温度为1100℃。
优选的是,所述的改善陶瓷刀具韧性的方法中,所述步骤(3)中,升温速率为35℃/h。
优选的是,所述的改善陶瓷刀具韧性的方法,还包括:步骤(4)将热压振动烧结得到的产品进行打磨。
尽管本发明的实施方案已公开如上,但其并不仅仅限于说明书和实施方式中所列运用,它完全可以被适用于各种适合本发明的领域,对于熟悉本领域的人员而言,可容易地实现另外的修改,因此在不背离权利要求及等同范围所限定的一般概念下,本发明并不限于特定的细节。
Claims (5)
1.一种改善陶瓷刀具韧性的方法,其特征在于,包括:
步骤(1)将粉体原料进行预压成型,粉体原料由按质量份数计的以下组分组成:氧化锆92~95份,氧化钇5~6份,稀土氧化物4~6份;
步骤(2)将预压成型得到的产品进行低温热处理,将温度从600℃~650℃升温至低温热处理的设定温度,升温速率为15~25℃/h,低温热处理的设定温度为1000~1100℃,在低温热处理的设定温度下施加恒定压力50MPa,施加时间为10min;
步骤(3)将低温热处理得到的产品进行热压振动烧结,热压振动烧结的温度从1100℃上升至1700℃,升温速率为30~50℃/h,待温度升高至1700℃时,压力从80MPa上升至100MPa,且升压速率为2MPa/min,并且压力在100MPa时再持续烧结20min;在热压振动烧结过程中,再持续施加可变力,该可变力的变化幅度为20MPa,频率为10~15次/s。
2.如权利要求1所述的改善陶瓷刀具韧性的方法,其特征在于,所述步骤(1)中,粉体原料由按质量份数计的以下组分组成:氧化锆95份,氧化钇6份,稀土氧化物6份。
3.如权利要求1所述的改善陶瓷刀具韧性的方法,其特征在于,所述低温热处理的温度为1100℃。
4.如权利要求1所述的改善陶瓷刀具韧性的方法,其特征在于,所述步骤(3)中,升温速率为35℃/h。
5.如权利要求1所述的改善陶瓷刀具韧性的方法,其特征在于,还包括:步骤(4)将热压振动烧结得到的产品进行打磨。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610756741.1A CN106348750A (zh) | 2016-08-29 | 2016-08-29 | 改善陶瓷刀具韧性的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610756741.1A CN106348750A (zh) | 2016-08-29 | 2016-08-29 | 改善陶瓷刀具韧性的方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106348750A true CN106348750A (zh) | 2017-01-25 |
Family
ID=57855979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610756741.1A Pending CN106348750A (zh) | 2016-08-29 | 2016-08-29 | 改善陶瓷刀具韧性的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106348750A (zh) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101798217A (zh) * | 2010-02-04 | 2010-08-11 | 山东轻工业学院 | 一种复合稀土稳定氧化锆基多元纳微米复合陶瓷工模具材料及其制备方法 |
CN102153346A (zh) * | 2010-12-08 | 2011-08-17 | 赣州科盈结构陶瓷有限公司 | 稀土复合氧化锆陶瓷健身球及其制备方法 |
CN103204678A (zh) * | 2012-01-16 | 2013-07-17 | 佛山市陶瓷研究所有限公司 | 一种超高强超高韧陶瓷刀具及其制备方法 |
CN103708832A (zh) * | 2013-09-29 | 2014-04-09 | 雅安远创陶瓷有限责任公司 | 一种纳米陶瓷刀具及其制备方法 |
-
2016
- 2016-08-29 CN CN201610756741.1A patent/CN106348750A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101798217A (zh) * | 2010-02-04 | 2010-08-11 | 山东轻工业学院 | 一种复合稀土稳定氧化锆基多元纳微米复合陶瓷工模具材料及其制备方法 |
CN102153346A (zh) * | 2010-12-08 | 2011-08-17 | 赣州科盈结构陶瓷有限公司 | 稀土复合氧化锆陶瓷健身球及其制备方法 |
CN103204678A (zh) * | 2012-01-16 | 2013-07-17 | 佛山市陶瓷研究所有限公司 | 一种超高强超高韧陶瓷刀具及其制备方法 |
CN103708832A (zh) * | 2013-09-29 | 2014-04-09 | 雅安远创陶瓷有限责任公司 | 一种纳米陶瓷刀具及其制备方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108706973B (zh) | 一种高强度高导热石墨材料的制备方法 | |
CN104496480B (zh) | 碳化硅陶瓷预制体、铝基碳化硅陶瓷材料及其制备方法 | |
CN104291814B (zh) | 陶瓷耳机及制造方法 | |
CN106904977A (zh) | 一种两步烧结法制备表硬心韧Si3N4陶瓷材料的方法 | |
CN109320251B (zh) | 一种高性能无压烧结碳化硅复合陶瓷的制备方法 | |
CN108751996A (zh) | 一种石墨烯增韧的碳化硼陶瓷材料及其等离子烧结制备工艺 | |
CN104211392A (zh) | 一种陶瓷薄片及其制备方法 | |
JP6290208B2 (ja) | 機能表面を有する医療製品を製造するための可塑性調剤の多成分接合系 | |
CN103881371B (zh) | 激光烧结3d制造技术用石塑复合粉末及其制备方法 | |
CN106396674A (zh) | 高韧性陶瓷刀具的生产方法 | |
CN106396673A (zh) | 陶瓷刀具的加工工艺 | |
Nakahira et al. | Fabrication of Porous Hydroxyapatite Using Hydrothermal Hot Pressing and Post‐Sintering | |
CN104658917A (zh) | 一种含高体积分数SiC的金属基复合电子封装件的制备方法 | |
CN106396672A (zh) | 陶瓷刀具的制备方法 | |
CN106348750A (zh) | 改善陶瓷刀具韧性的方法 | |
CN106380196A (zh) | 陶瓷刀具的成型工艺 | |
CN104843646B (zh) | 一种金属氧化物扩散偶的制备方法 | |
CN104876584B (zh) | 一种硅化锆基复合陶瓷材料及其制备方法 | |
CN103862049B (zh) | Ni-Ti多孔材料微型零件及其烧结方法 | |
CN103803950B (zh) | 一种氮化硼纳米管增强陶瓷基复合材料及其制备方法 | |
KR101307418B1 (ko) | 기능성 숯 조성물 제조방법 및 이 방법에 의해 제조된 기능성 숯 조성물 | |
CN105565805A (zh) | 一种复合陶瓷材料的制备方法 | |
CN106007774A (zh) | 一种多孔氮化硅陶瓷的制备方法 | |
CN106542842B (zh) | 一种孔结构可控的Si-O-C大孔陶瓷的制备方法 | |
CN105777129A (zh) | 碳化硼材料及其制造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170125 |