CN107266048B - 一种特种耐磨陶瓷材料 - Google Patents

一种特种耐磨陶瓷材料 Download PDF

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CN107266048B
CN107266048B CN201710513538.6A CN201710513538A CN107266048B CN 107266048 B CN107266048 B CN 107266048B CN 201710513538 A CN201710513538 A CN 201710513538A CN 107266048 B CN107266048 B CN 107266048B
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叶波
梁光文
王英
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Mianyang shengtewei Technology Co.,Ltd.
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Abstract

本发明公开一种特种耐磨陶瓷材料，所述陶瓷材料由AL2O3、MgO、ZrO2（YSZ）、Cr2O3、WC、苏州土混合烧制而成。本发明在常规工艺上进行改进，通过在整体组分的基础上降低对于ZrO2（YSZ）在总体上的含量，从而实现对氧化铝陶瓷进行增韧，而在材料中Cr2O3和WC的组分，可以显著提高氧化铝陶瓷的硬度，使产品在具有更高硬度的前提下，具备更强的抗冲击性，提高陶瓷的整体性能和使用广度。

Description

一种特种耐磨陶瓷材料
技术领域
本发明涉及材料领域，具体来说是一种特种耐磨陶瓷材料。
背景技术
在矿山、化工等领域，皮带输送生产线是非常常见且用量很大的设备装置，在一条输送皮带与另一条皮带之间都有金属管件或溜槽进行转运。这些管件长期经受物料冲刷，段时间内就会将管壁磨穿，导致物料外泄，既造成了物料损失浪费，又污染了现场环境。检修人员四处补漏，每一处漏点采用普通钢板补漏的周期为20—30天，且漏点多处于高处、高空，人生安全受到威胁。
现有技术着重提高陶瓷的高硬度，使其耐磨，但在应对采矿、冶炼等大块物料冲击时，现有陶瓷易产生断裂，形成故障点，由此开始局部的损坏、脱落，局部脱落带来大面积的损坏和脱落，不能发挥陶瓷的耐磨特性。
发明内容
本发明的目的是在保留高硬度的前提下，提高陶瓷的抗冲击性，提高陶瓷的整体性能，使其适应于更多更恶劣的工况环境。
为了实现上述目的，本发明采用如下技术方案：
一种特种耐磨陶瓷材料，所述陶瓷材料由AL2O3、MgO、ZrO2（YSZ）、Cr2O3、WC、苏州土混合烧制而成。
在上述技术方案中，所述陶瓷包括以下重量份的原料：AL2O3：75—95份、MgO：0.98—1.65份、苏州土：3—20份、ZrO2（YSZ）：7—15份、Cr2O3：0.1—0.3份、WC:0.5—8份。
在上述技术方案中，所述AL2O3为α-AL2O3。
在上述技术方案中，所述陶瓷材料还包括金红石，所述金红石中二氧化钛含量占陶瓷材料的0.5-1.5份。
在上述技术方案中，所述陶瓷材料的制作过程为：
步骤一：将原料按配方进行取量并粉碎至100—300μm的粉状；
步骤二：将粉料在100—150℃环境下烘焙水分，取有机粘结剂与粉料混合均匀；
步骤四：采用全自动液压式干压成型法将上述混合物制成相应的坯形；
步骤四：对坯形进行热烧加温，并同时对坯形进行加压，当温度和压力稳定后保持3-5个小时即可完成制作。
在上述技术方案中，所述有机粘接剂与粉料的比例在10%-40%之间。
在上述技术方案中，所述坯形温度保持在1000—1800℃，压力保持在20—400MPa。
综上所述，由于采用了上述技术方案，本发明的有益效果是：
本发明在常规工艺上进行改进，通过在整体组分的基础上降低对于ZrO2（YSZ）在总体上的含量，从而实现对陶瓷材料进行曾韧，而在材料中增加Cr2O3的含量，从而提高成品的硬度。在现有材料高硬度的前提下，提高了陶瓷的抗冲击性，提高陶瓷的整体性能。
具体实施方式
本说明书中公开的所有特征，或公开的所有方法或过程中的步骤，除了互相排斥的特征和/或步骤以外，均可以以任何方式组合。
本发明采用的技术方案是以AL2O3为主要原料，以提供高硬度保障，加入ZrO2+Y203(氧化钇稳定的四方氧化锆)，经过1000—1800℃的温度，历时3—5小时的烧制，对AL2O3进行增韧，得到氧化钇稳定的四方氧化锆多晶陶瓷材料。材料主要成份及配比：α-AL2O3：75—95%，MgO：0.98—1.65%,苏州土：3%—20%，ZrO2（YSZ）：8%—16%，Cr2O3：0.1%—0.3%，WC:0.5%—8%，为了取得更好的效果，还可以在材料中添加金红石。
而陶瓷的制作工艺为：
步骤1、制粉：将AL2O3，MgO2，ZrO，CrO，WC，苏州土、金红石按配方进行取量并粉碎至100—300μm；
步骤2、混合：将粉料在100—150℃环境下烘焙水分，按10—40%的有机粘结剂比例与AL2O3等粉料混合均匀；
步骤3、制坯：采用全自动液压式干压成型法；
步骤4、烧制：在加热烧制的同时对坯体进行加压，加压保持在20—400MPa，温度烧至1000—1800℃，温度达到后保温3—5小时加温的时候加压可以实现低温烧制成型，节省能耗，控制成本。
实施方式一：
取75份α-AL2O3，8份ZrO2（YSZ），11份苏州土，0.8份Cr2O3，1.1份MgO，1份WC 进行上述制粉、混合、制坯、烧制四项步骤制造的陶瓷成品具备体积密度：4.2g/cm3，硬度：HRA≥88，断裂韧性：5.6Mpa，抗弯强度≥480Mpa。
实施方式二：
取80份α-AL2O3，10份ZrO2（YSZ），12份苏州土，1份Cr2O3，1.5份MgO，1.1份WC 进行上述制粉、混合、制坯、烧制四项步骤制造的陶瓷成品具备体积密度：4.6g/cm3，硬度：HRA≥90，断裂韧性：7.2Mpa，抗弯强度≥670Mpa。
实施方式三：
取80份α-AL2O3，12份ZrO2（YSZ），13份苏州土，1份Cr2O3，1.5份MgO，1.1份WC ，1份金红石进行上述制粉、混合、制坯、烧制四项步骤制造的陶瓷成品具备体积密度：4.8g/cm3，硬度：HRA≥92，断裂韧性：9.3Mpa，抗弯强度≥780Mpa。
通过上述的不同组分和成品的试验数据可以看出，随着α-AL2O3的增加，成品的硬度在增加，而随着ZrO2（YSZ）在增加，成品的断裂韧性也在增加，同时因为增加了金红石，而产品的抗弯强度则大幅度进行了提高。同时，在α-AL2O3不变的情况下，ZrO2（YSZ）的改变，使得断裂韧性明显改变。
本发明并不局限于前述的具体实施方式。本发明扩展到任何在本说明书中披露的新特征或任何新的组合，以及披露的任一新的方法或过程的步骤或任何新的组合。

Claims (5)

1.一种特种耐磨陶瓷材料，其特征在于所述特种耐磨陶瓷材料由Al2O3、MgO、ZrO2、Cr2O3、WC、苏州土混合烧制而成；
原料的重量份为：Al2O3：75—95份、MgO：0.98—1.65份、苏州土：11—20份、ZrO2：7—15份、Cr2O3：0.1—0.3份、WC:0.5—8份；其中，ZrO2采用YSZ；
所述特种耐磨陶瓷材料的制作过程为：
步骤一：将原料按配方进行取量并粉碎至100—300μm的粉状；
步骤二：将粉料在100—150℃环境下烘焙水分，取有机粘结剂与粉料混合均匀；
步骤三：采用全自动液压式干压成型法将混合物制成相应的坯形；
步骤四：在加热烧制的同时对坯体进行加压，当温度和压力稳定后保持3-5个小时即可完成制作。
2.根据权利要求1所述的一种特种耐磨陶瓷材料，其特征在于所述Al2O3为α-Al2O3。
3.根据权利要求1所述的一种特种耐磨陶瓷材料，其特征在于所述特种耐磨陶瓷材料还包括金红石，所述金红石中二氧化钛含量占特种耐磨陶瓷材料的0.5-1.5份。
4.根据权利要求1所述的一种特种耐磨陶瓷材料，其特征在于所述有机粘结剂与粉料的比例在10%-40%之间。
5.根据权利要求1所述的一种特种耐磨陶瓷材料，其特征在于所述步骤四中加压保持在20—400MPa，温度烧至1000—1800℃。
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CN104211380A (zh) * 2014-08-08 2014-12-17 宁波晶天新材料有限公司 一种陶瓷刀及其制备办法

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