CN106396669A - 一种硬度较高的耐磨氧化锆陶瓷 - Google Patents

一种硬度较高的耐磨氧化锆陶瓷 Download PDF

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CN106396669A
CN106396669A CN201610725465.2A CN201610725465A CN106396669A CN 106396669 A CN106396669 A CN 106396669A CN 201610725465 A CN201610725465 A CN 201610725465A CN 106396669 A CN106396669 A CN 106396669A
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Abstract

本发明公开了一种硬度较高的耐磨氧化锆陶瓷，该陶瓷包括以下重量份计的原料：氧化锆40~50份、氧化钡1~5份、氧化锌2~3份、氧化钴10~12份、羟基磷灰石15~18份、交联剂8~9份、表面活性剂10~15份。其制备方法是：将氧化锆、氧化钡、氧化锌、氧化钴、羟基磷灰石、交联剂、表面活性剂放在铂金坩埚内于1400~1500℃熔化2~3h，转到退火炉内热处理4~5h，缓慢冷却至室温，即可。本发明的氧化钡使氧化锆晶格变形，提高氧化锆的再结晶能力，提高氧化锆陶瓷的硬度，增强耐磨性能。

Description

一种硬度较高的耐磨氧化锆陶瓷
技术领域
本发明涉及生物技术领域，尤其涉及一种耐磨氧化锆陶瓷及其制备方法。
背景技术
纯净的氧化锆是白色固体，含有杂质时会显现灰色或淡黄色，添加显色剂还可显示各种其它颜色。纯氧化锆的分子量为123.22，理论密度是5.89g/cm3，熔点为2715℃。通常含有少量的氧化铪，难以分离，但是对氧化锆的性能没有明显的影响。氧化锆有三种晶体形态：单斜、四方、立方晶相。常温下氧化锆只以单斜相出现，加热到1100℃左右转变为四方相，加热到更高温度会转化为立方相。由于在单斜相向四方相转变的时候会产生较大的体积变化，冷却的时候又会向相反的方向发生较大的体积变化，容易造成产品的开裂，限制了纯氧化锆在高温领域的应用，其耐磨性能一般。
氧化锆含杂质时呈黄色或灰色，，在常压下纯氧化锆共有三种晶态。氧化锆陶瓷的生产要求制备高纯、分散性能好、粒子超细、粒度分布窄的粉体，氧化锆超细粉末的制备方法很多，氧化锆的提纯主要有氯化和热分解法、碱金属氧化分解法、石灰熔融法、等离子弧法、沉淀法、胶体法、水解法、喷雾热解法等。
发明内容
本发明针对现有技术的不足，提供一种耐磨氧化锆陶瓷及其制备方法，高温条件下耐磨性能好。
本发明采用以下技术方案：
耐磨氧化锆陶瓷，包括以下重量份计的原料：氧化锆40～50份、氧化钡1～5份、氧化锌2～3份、氧化钴10～12份、羟基磷灰石15～18份、交联剂8～9份、表面活性剂10～15份。
作为优选，羟基磷灰石中Ga和P之比为1:1.98。
作为优选，交联剂为N,N’-亚甲基双丙烯酰胺、二乙烯三胺或二乙烯基苯中的一种或几种。
作为优选，表面活性剂为单硬脂酸甘油酯、失水山梨醇倍半油酸酯、丙二醇脂肪酸酯或琥珀酸二辛酯磺酸钠中的一种或几种。
上述耐磨氧化锆陶瓷的制备方法，包括以下步骤：将氧化锆、氧化钡、氧化锌、氧化钴、羟基磷灰石、交联剂、表面活性剂放在铂金坩埚内于1400～1500℃熔化2～3h，转到退火炉内热处理4～5h，缓慢冷却至室温，即可。
作为优选，热处理温度为100～150℃。
本发明的氧化钡使氧化锆晶格变形，提高氧化锆的再结晶能力，提高氧化锆陶瓷的硬度，增强耐磨性能。
具体实施方式
下面结合具体实施例对本发明作进一步详细介绍。
实施例1
耐磨氧化锆陶瓷，包括以下重量份计的原料：氧化锆40份、氧化钡1份、氧化锌2份、氧化钴10份、羟基磷灰石15份、交联剂8份、表面活性剂10份。
羟基磷灰石中Ga和P之比为1:1.98。
交联剂是质量比为1:7:1的N,N’-亚甲基双丙烯酰胺、二乙烯基苯、二乙烯三胺。
表面活性剂是质量比为1:1:1：2的单硬脂酸甘油酯、失水山梨醇倍半油酸酯、丙二醇脂肪酸酯、琥珀酸二辛酯磺酸钠。
上述耐磨氧化锆陶瓷的制备方法，包括以下步骤：将氧化锆、氧化钡、氧化锌、氧化钴、羟基磷灰石、交联剂、表面活性剂放在铂金坩埚内于1400℃熔化2h，转到退火炉内热处理4h，缓慢冷却至室温，即可。
热处理温度为100℃。
实施例2
耐磨氧化锆陶瓷，包括以下重量份计的原料：氧化锆50份、氧化钡5份、氧化锌2份、氧化钴10份、羟基磷灰石15份、交联剂8份、表面活性剂10份。
羟基磷灰石中Ga和P之比为1:1.98。
交联剂是质量比为1:7的N,N’-亚甲基双丙烯酰胺、二乙烯三胺。
表面活性剂是质量比为1:3:4的单硬脂酸甘油酯、丙二醇脂肪酸酯、琥珀酸二辛酯磺酸钠。
上述耐磨氧化锆陶瓷的制备方法，包括以下步骤：将氧化锆、氧化钡、氧化锌、氧化钴、羟基磷灰石、交联剂、表面活性剂放在铂金坩埚内于1500℃熔化3h，转到退火炉内热处理5h，缓慢冷却至室温，即可。
热处理温度为150℃。
实施例3
耐磨氧化锆陶瓷，包括以下重量份计的原料：氧化锆45份、氧化钡4份、氧化锌2.5份、氧化钴11份、羟基磷灰石16份、交联剂8.5份、表面活性剂12份。
羟基磷灰石中Ga和P之比为1:1.98。
交联剂是质量比为3:1的N,N’-亚甲基双丙烯酰胺、二乙烯三胺。
表面活性剂是质量比为1:8的单硬脂酸甘油酯、失水山梨醇倍半油酸酯。
上述耐磨氧化锆陶瓷的制备方法，包括以下步骤：将氧化锆、氧化钡、氧化锌、氧化钴、羟基磷灰石、交联剂、表面活性剂放在铂金坩埚内于1450℃熔化2.5h，转到退火炉内热处理4.5h，缓慢冷却至室温，即可。
热处理温度为120℃。
实施例4
耐磨氧化锆陶瓷，包括以下重量份计的原料：氧化锆42份、氧化钡2份、氧化锌2.8份、氧化钴11份、羟基磷灰石17份、交联剂8份、表面活性剂11份。
羟基磷灰石中Ga和P之比为1:1.98。
交联剂是质量比为1:7的二乙烯基苯、二乙烯三胺。
表面活性剂是质量比为6:1的单硬脂酸甘油酯、丙二醇脂肪酸酯。
上述耐磨氧化锆陶瓷的制备方法，包括以下步骤：将氧化锆、氧化钡、氧化锌、氧化钴、羟基磷灰石、交联剂、表面活性剂放在铂金坩埚内于1420℃熔化2.3h，转到退火炉内热处理4.8h，缓慢冷却至室温，即可。
热处理温度为110℃。
对比例1
与实施例1相同，不同在于：不加氧化钡。
性能测试
对实施例1～4和对比例1的陶瓷进行性能测试，结果见表1。
表1
IS06474标准 对比例1 实施例1 实施例2 实施例3 实施例4
硬度(HV) ＞2000 1990 2400 2420 2450 2450
断裂韧性(MPa·m1/2) 0.9 1.5 1.8 1.9 1.6
耐磨系数(1200℃，转) 12000 14700 14800 14500 14566
结论：本发明的氧化钡使氧化锆晶格变形，提高氧化锆陶瓷的硬度，使硬度远高于标准的2000，韧性大，高温条件下耐磨性能好。
以上公开的仅为本申请的其中几个具体实施例，但本申请并非局限于此，任何本领域的技术人员能思之的变化，都应落在本申请的保护范围内。

Claims (1)

1.耐磨氧化锆陶瓷，其特征在于，包括以下重量份计的原料：氧化锆40～50份、氧化钡1～5份、氧化锌2～3份、氧化钴10～12份、羟基磷灰石15～18份、交联剂8～9份、表面活性剂10～15份；
所述耐磨氧化锆陶瓷的制备方法，包括以下步骤：将氧化锆、氧化钡、氧化锌、氧化钴、羟基磷灰石、交联剂、表面活性剂放在铂金坩埚内于1400～1500℃熔化2～3h，转到退火炉内热处理4～5h，缓慢冷却至室温，即可；
羟基磷灰石中Ga和P之比为1:1.98；
交联剂为N,N’-亚甲基双丙烯酰胺、二乙烯三胺或二乙烯基苯中的几种；
表面活性剂为单硬脂酸甘油酯、失水山梨醇倍半油酸酯、丙二醇脂肪酸酯或琥珀酸二辛酯磺酸钠中的几种；
热处理温度为100～150℃。
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